mirror of
https://github.com/signalwire/freeswitch.git
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[Build-System] Update libsrtp to 2.4.0
This commit is contained in:
Andrey Volk
@@ -1414,11 +1414,6 @@ static void aes_128_expand_encryption_key(const uint8_t *key,
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v128_copy_octet_string(&expanded_key->round[0], key);
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#if 0
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debug_print(srtp_mod_aes_icm,
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"expanded key[0]: %s", v128_hex_string(&expanded_key->round[0]));
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#endif
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/* loop over round keys */
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for (i = 1; i < 11; i++) {
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/* munge first word of round key */
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@@ -1445,11 +1440,6 @@ static void aes_128_expand_encryption_key(const uint8_t *key,
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expanded_key->round[i].v32[3] =
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expanded_key->round[i].v32[2] ^ expanded_key->round[i - 1].v32[3];
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#if 0
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debug_print2(srtp_mod_aes_icm,
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"expanded key[%d]: %s", i, v128_hex_string(&expanded_key->round[i]));
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#endif
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/* modify round constant */
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rc = gf2_8_shift(rc);
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}
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@@ -1469,13 +1459,6 @@ static void aes_256_expand_encryption_key(const unsigned char *key,
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v128_copy_octet_string(&expanded_key->round[0], key);
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v128_copy_octet_string(&expanded_key->round[1], key + 16);
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#if 0
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debug_print(srtp_mod_aes_icm,
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"expanded key[0]: %s", v128_hex_string(&expanded_key->round[0]));
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debug_print(srtp_mod_aes_icm,
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"expanded key[1]: %s", v128_hex_string(&expanded_key->round[1]));
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#endif
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/* loop over rest of round keys */
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for (i = 2; i < 15; i++) {
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/* munge first word of round key */
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@@ -1515,11 +1498,6 @@ static void aes_256_expand_encryption_key(const unsigned char *key,
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expanded_key->round[i].v32[3] =
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expanded_key->round[i].v32[2] ^ expanded_key->round[i - 2].v32[3];
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#if 0
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debug_print2(srtp_mod_aes_icm,
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"expanded key[%d]: %s", i, v128_hex_string(&expanded_key->round[i]));
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#endif
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}
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}
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@@ -1796,7 +1774,7 @@ static inline void aes_inv_final_round(v128_t *state, const v128_t *round_key)
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v128_xor_eq(state, round_key);
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}
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#elif CPU_RISC
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#elif defined(CPU_RISC)
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static inline void aes_round(v128_t *state, const v128_t *round_key)
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{
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@@ -0,0 +1,412 @@
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/*
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* aes_gcm_mbedtls.c
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*
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* AES Galois Counter Mode
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*
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* YongCheng Yang
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*
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*/
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/*
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*
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* Copyright (c) 2013-2017, Cisco Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* Neither the name of the Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <mbedtls/gcm.h>
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#include "aes_gcm.h"
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#include "alloc.h"
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#include "err.h" /* for srtp_debug */
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#include "crypto_types.h"
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#include "cipher_types.h"
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#include "cipher_test_cases.h"
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srtp_debug_module_t srtp_mod_aes_gcm = {
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0, /* debugging is off by default */
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"aes gcm mbedtls" /* printable module name */
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};
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/**
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* SRTP IV Formation for AES-GCM
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* https://tools.ietf.org/html/rfc7714#section-8.1
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* 0 0 0 0 0 0 0 0 0 0 1 1
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* 0 1 2 3 4 5 6 7 8 9 0 1
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* +--+--+--+--+--+--+--+--+--+--+--+--+
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* |00|00| SSRC | ROC | SEQ |---+
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* +--+--+--+--+--+--+--+--+--+--+--+--+ |
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* |
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* +--+--+--+--+--+--+--+--+--+--+--+--+ |
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* | Encryption Salt |->(+)
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* +--+--+--+--+--+--+--+--+--+--+--+--+ |
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* |
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* +--+--+--+--+--+--+--+--+--+--+--+--+ |
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* | Initialization Vector |<--+
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* +--+--+--+--+--+--+--+--+--+--+--+--+
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*
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* SRTCP IV Formation for AES-GCM
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* https://tools.ietf.org/html/rfc7714#section-9.1
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*
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*/
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/*
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* For now we only support 8 and 16 octet tags. The spec allows for
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* optional 12 byte tag, which may be supported in the future.
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*/
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#define GCM_IV_LEN 12
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#define GCM_AUTH_TAG_LEN 16
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#define GCM_AUTH_TAG_LEN_8 8
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#define FUNC_ENTRY() debug_print(srtp_mod_aes_gcm, "%s entry", __func__);
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/*
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* This function allocates a new instance of this crypto engine.
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* The key_len parameter should be one of 28 or 44 for
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* AES-128-GCM or AES-256-GCM respectively. Note that the
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* key length includes the 14 byte salt value that is used when
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* initializing the KDF.
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*/
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static srtp_err_status_t srtp_aes_gcm_mbedtls_alloc(srtp_cipher_t **c,
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int key_len,
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int tlen)
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{
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FUNC_ENTRY();
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srtp_aes_gcm_ctx_t *gcm;
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debug_print(srtp_mod_aes_gcm, "allocating cipher with key length %d",
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key_len);
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debug_print(srtp_mod_aes_gcm, "allocating cipher with tag length %d", tlen);
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/*
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* Verify the key_len is valid for one of: AES-128/256
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*/
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if (key_len != SRTP_AES_GCM_128_KEY_LEN_WSALT &&
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key_len != SRTP_AES_GCM_256_KEY_LEN_WSALT) {
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return (srtp_err_status_bad_param);
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}
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if (tlen != GCM_AUTH_TAG_LEN && tlen != GCM_AUTH_TAG_LEN_8) {
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return (srtp_err_status_bad_param);
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}
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/* allocate memory a cipher of type aes_gcm */
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*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
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if (*c == NULL) {
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return (srtp_err_status_alloc_fail);
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}
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gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t));
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if (gcm == NULL) {
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srtp_crypto_free(*c);
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*c = NULL;
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return (srtp_err_status_alloc_fail);
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}
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gcm->ctx =
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(mbedtls_gcm_context *)srtp_crypto_alloc(sizeof(mbedtls_gcm_context));
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if (gcm->ctx == NULL) {
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srtp_crypto_free(gcm);
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srtp_crypto_free(*c);
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*c = NULL;
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return srtp_err_status_alloc_fail;
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}
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mbedtls_gcm_init(gcm->ctx);
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/* set pointers */
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(*c)->state = gcm;
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/* setup cipher attributes */
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switch (key_len) {
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case SRTP_AES_GCM_128_KEY_LEN_WSALT:
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(*c)->type = &srtp_aes_gcm_128;
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(*c)->algorithm = SRTP_AES_GCM_128;
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gcm->key_size = SRTP_AES_128_KEY_LEN;
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gcm->tag_len = tlen;
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break;
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case SRTP_AES_GCM_256_KEY_LEN_WSALT:
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(*c)->type = &srtp_aes_gcm_256;
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(*c)->algorithm = SRTP_AES_GCM_256;
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gcm->key_size = SRTP_AES_256_KEY_LEN;
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gcm->tag_len = tlen;
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break;
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}
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/* set key size */
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(*c)->key_len = key_len;
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return (srtp_err_status_ok);
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}
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/*
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* This function deallocates a GCM session
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*/
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static srtp_err_status_t srtp_aes_gcm_mbedtls_dealloc(srtp_cipher_t *c)
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{
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srtp_aes_gcm_ctx_t *ctx;
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FUNC_ENTRY();
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ctx = (srtp_aes_gcm_ctx_t *)c->state;
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if (ctx) {
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mbedtls_gcm_free(ctx->ctx);
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srtp_crypto_free(ctx->ctx);
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/* zeroize the key material */
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octet_string_set_to_zero(ctx, sizeof(srtp_aes_gcm_ctx_t));
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srtp_crypto_free(ctx);
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}
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/* free memory */
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srtp_crypto_free(c);
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return (srtp_err_status_ok);
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}
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static srtp_err_status_t srtp_aes_gcm_mbedtls_context_init(void *cv,
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const uint8_t *key)
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{
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FUNC_ENTRY();
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srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
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uint32_t key_len_in_bits;
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int errCode = 0;
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c->dir = srtp_direction_any;
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c->aad_size = 0;
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debug_print(srtp_mod_aes_gcm, "key: %s",
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srtp_octet_string_hex_string(key, c->key_size));
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key_len_in_bits = (c->key_size << 3);
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switch (c->key_size) {
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case SRTP_AES_256_KEY_LEN:
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case SRTP_AES_128_KEY_LEN:
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break;
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default:
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return (srtp_err_status_bad_param);
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break;
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}
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errCode = mbedtls_gcm_setkey(c->ctx, MBEDTLS_CIPHER_ID_AES,
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(const unsigned char *)key, key_len_in_bits);
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if (errCode != 0) {
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debug_print(srtp_mod_aes_gcm, "mbedtls error code: %d", errCode);
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return srtp_err_status_init_fail;
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}
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return (srtp_err_status_ok);
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}
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static srtp_err_status_t srtp_aes_gcm_mbedtls_set_iv(
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void *cv,
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uint8_t *iv,
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srtp_cipher_direction_t direction)
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{
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FUNC_ENTRY();
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srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
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if (direction != srtp_direction_encrypt &&
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direction != srtp_direction_decrypt) {
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return (srtp_err_status_bad_param);
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}
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c->dir = direction;
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debug_print(srtp_mod_aes_gcm, "setting iv: %s",
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srtp_octet_string_hex_string(iv, GCM_IV_LEN));
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c->iv_len = GCM_IV_LEN;
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memcpy(c->iv, iv, c->iv_len);
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return (srtp_err_status_ok);
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}
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/*
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* This function processes the AAD
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*
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* Parameters:
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* c Crypto context
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* aad Additional data to process for AEAD cipher suites
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* aad_len length of aad buffer
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*/
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static srtp_err_status_t srtp_aes_gcm_mbedtls_set_aad(void *cv,
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const uint8_t *aad,
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uint32_t aad_len)
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{
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FUNC_ENTRY();
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int errCode = 0;
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srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
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debug_print(srtp_mod_aes_gcm, "setting AAD: %s",
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srtp_octet_string_hex_string(aad, aad_len));
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if (aad_len + c->aad_size > MAX_AD_SIZE) {
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return srtp_err_status_bad_param;
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}
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memcpy(c->aad + c->aad_size, aad, aad_len);
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c->aad_size += aad_len;
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return (srtp_err_status_ok);
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}
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/*
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* This function encrypts a buffer using AES GCM mode
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*
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* Parameters:
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* c Crypto context
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* buf data to encrypt
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* enc_len length of encrypt buffer
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*/
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static srtp_err_status_t srtp_aes_gcm_mbedtls_encrypt(void *cv,
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unsigned char *buf,
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unsigned int *enc_len)
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{
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FUNC_ENTRY();
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srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
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int errCode = 0;
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if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) {
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return (srtp_err_status_bad_param);
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}
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errCode = mbedtls_gcm_crypt_and_tag(c->ctx, MBEDTLS_GCM_ENCRYPT, *enc_len,
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c->iv, c->iv_len, c->aad, c->aad_size,
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buf, buf, c->tag_len, c->tag);
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c->aad_size = 0;
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if (errCode != 0) {
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debug_print(srtp_mod_aes_gcm, "mbedtls error code: %d", errCode);
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return srtp_err_status_bad_param;
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}
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return (srtp_err_status_ok);
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}
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/*
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* This function calculates and returns the GCM tag for a given context.
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* This should be called after encrypting the data. The *len value
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* is increased by the tag size. The caller must ensure that *buf has
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* enough room to accept the appended tag.
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*
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* Parameters:
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* c Crypto context
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* buf data to encrypt
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* len length of encrypt buffer
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*/
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static srtp_err_status_t srtp_aes_gcm_mbedtls_get_tag(void *cv,
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uint8_t *buf,
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uint32_t *len)
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{
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FUNC_ENTRY();
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srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
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debug_print(srtp_mod_aes_gcm, "appended tag size: %d", c->tag_len);
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*len = c->tag_len;
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memcpy(buf, c->tag, c->tag_len);
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return (srtp_err_status_ok);
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}
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/*
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* This function decrypts a buffer using AES GCM mode
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*
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* Parameters:
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* c Crypto context
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* buf data to encrypt
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* enc_len length of encrypt buffer
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*/
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static srtp_err_status_t srtp_aes_gcm_mbedtls_decrypt(void *cv,
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unsigned char *buf,
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unsigned int *enc_len)
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{
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FUNC_ENTRY();
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srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
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int errCode = 0;
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int len = *enc_len;
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if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) {
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return (srtp_err_status_bad_param);
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}
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debug_print(srtp_mod_aes_gcm, "AAD: %s",
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srtp_octet_string_hex_string(c->aad, c->aad_size));
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errCode = mbedtls_gcm_auth_decrypt(
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c->ctx, (*enc_len - c->tag_len), c->iv, c->iv_len, c->aad, c->aad_size,
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buf + (*enc_len - c->tag_len), c->tag_len, buf, buf);
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c->aad_size = 0;
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if (errCode != 0) {
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return (srtp_err_status_auth_fail);
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}
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/*
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* Reduce the buffer size by the tag length since the tag
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* is not part of the original payload
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||||
*/
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*enc_len -= c->tag_len;
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||||
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return (srtp_err_status_ok);
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||||
}
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||||
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||||
/*
|
||||
* Name of this crypto engine
|
||||
*/
|
||||
static const char srtp_aes_gcm_128_mbedtls_description[] =
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"AES-128 GCM using mbedtls";
|
||||
static const char srtp_aes_gcm_256_mbedtls_description[] =
|
||||
"AES-256 GCM using mbedtls";
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_gcm_128 = {
|
||||
srtp_aes_gcm_mbedtls_alloc,
|
||||
srtp_aes_gcm_mbedtls_dealloc,
|
||||
srtp_aes_gcm_mbedtls_context_init,
|
||||
srtp_aes_gcm_mbedtls_set_aad,
|
||||
srtp_aes_gcm_mbedtls_encrypt,
|
||||
srtp_aes_gcm_mbedtls_decrypt,
|
||||
srtp_aes_gcm_mbedtls_set_iv,
|
||||
srtp_aes_gcm_mbedtls_get_tag,
|
||||
srtp_aes_gcm_128_mbedtls_description,
|
||||
&srtp_aes_gcm_128_test_case_0,
|
||||
SRTP_AES_GCM_128
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_gcm_256 = {
|
||||
srtp_aes_gcm_mbedtls_alloc,
|
||||
srtp_aes_gcm_mbedtls_dealloc,
|
||||
srtp_aes_gcm_mbedtls_context_init,
|
||||
srtp_aes_gcm_mbedtls_set_aad,
|
||||
srtp_aes_gcm_mbedtls_encrypt,
|
||||
srtp_aes_gcm_mbedtls_decrypt,
|
||||
srtp_aes_gcm_mbedtls_set_iv,
|
||||
srtp_aes_gcm_mbedtls_get_tag,
|
||||
srtp_aes_gcm_256_mbedtls_description,
|
||||
&srtp_aes_gcm_256_test_case_0,
|
||||
SRTP_AES_GCM_256
|
||||
};
|
||||
@@ -0,0 +1,442 @@
|
||||
/*
|
||||
* aes_gcm_nss.c
|
||||
*
|
||||
* AES Galois Counter Mode
|
||||
*
|
||||
* Richard L. Barnes
|
||||
* Cisco Systems, Inc.
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include "aes_gcm.h"
|
||||
#include "alloc.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "crypto_types.h"
|
||||
#include "cipher_types.h"
|
||||
#include "cipher_test_cases.h"
|
||||
#include <secerr.h>
|
||||
#include <nspr.h>
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_gcm = {
|
||||
0, /* debugging is off by default */
|
||||
"aes gcm nss" /* printable module name */
|
||||
};
|
||||
|
||||
/*
|
||||
* For now we only support 8 and 16 octet tags. The spec allows for
|
||||
* optional 12 byte tag, which may be supported in the future.
|
||||
*/
|
||||
#define GCM_IV_LEN 12
|
||||
#define GCM_AUTH_TAG_LEN 16
|
||||
#define GCM_AUTH_TAG_LEN_8 8
|
||||
|
||||
/*
|
||||
* This function allocates a new instance of this crypto engine.
|
||||
* The key_len parameter should be one of 28 or 44 for
|
||||
* AES-128-GCM or AES-256-GCM respectively. Note that the
|
||||
* key length includes the 14 byte salt value that is used when
|
||||
* initializing the KDF.
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_alloc(srtp_cipher_t **c,
|
||||
int key_len,
|
||||
int tlen)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *gcm;
|
||||
NSSInitContext *nss;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "allocating cipher with key length %d",
|
||||
key_len);
|
||||
debug_print(srtp_mod_aes_gcm, "allocating cipher with tag length %d", tlen);
|
||||
|
||||
/*
|
||||
* Verify the key_len is valid for one of: AES-128/256
|
||||
*/
|
||||
if (key_len != SRTP_AES_GCM_128_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_GCM_256_KEY_LEN_WSALT) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
if (tlen != GCM_AUTH_TAG_LEN && tlen != GCM_AUTH_TAG_LEN_8) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
/* Initialize NSS equiv of NSS_NoDB_Init(NULL) */
|
||||
nss = NSS_InitContext("", "", "", "", NULL,
|
||||
NSS_INIT_READONLY | NSS_INIT_NOCERTDB |
|
||||
NSS_INIT_NOMODDB | NSS_INIT_FORCEOPEN |
|
||||
NSS_INIT_OPTIMIZESPACE);
|
||||
if (!nss) {
|
||||
return (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
/* allocate memory a cipher of type aes_gcm */
|
||||
*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
|
||||
if (*c == NULL) {
|
||||
NSS_ShutdownContext(nss);
|
||||
return (srtp_err_status_alloc_fail);
|
||||
}
|
||||
|
||||
gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t));
|
||||
if (gcm == NULL) {
|
||||
NSS_ShutdownContext(nss);
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return (srtp_err_status_alloc_fail);
|
||||
}
|
||||
|
||||
gcm->nss = nss;
|
||||
|
||||
/* set pointers */
|
||||
(*c)->state = gcm;
|
||||
|
||||
/* setup cipher attributes */
|
||||
switch (key_len) {
|
||||
case SRTP_AES_GCM_128_KEY_LEN_WSALT:
|
||||
(*c)->type = &srtp_aes_gcm_128;
|
||||
(*c)->algorithm = SRTP_AES_GCM_128;
|
||||
gcm->key_size = SRTP_AES_128_KEY_LEN;
|
||||
gcm->tag_size = tlen;
|
||||
gcm->params.ulTagBits = 8 * tlen;
|
||||
break;
|
||||
case SRTP_AES_GCM_256_KEY_LEN_WSALT:
|
||||
(*c)->type = &srtp_aes_gcm_256;
|
||||
(*c)->algorithm = SRTP_AES_GCM_256;
|
||||
gcm->key_size = SRTP_AES_256_KEY_LEN;
|
||||
gcm->tag_size = tlen;
|
||||
gcm->params.ulTagBits = 8 * tlen;
|
||||
break;
|
||||
default:
|
||||
/* this should never hit, but to be sure... */
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
/* set key size and tag size*/
|
||||
(*c)->key_len = key_len;
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function deallocates a GCM session
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_dealloc(srtp_cipher_t *c)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *ctx;
|
||||
|
||||
ctx = (srtp_aes_gcm_ctx_t *)c->state;
|
||||
if (ctx) {
|
||||
/* release NSS resources */
|
||||
if (ctx->key) {
|
||||
PK11_FreeSymKey(ctx->key);
|
||||
}
|
||||
|
||||
if (ctx->nss) {
|
||||
NSS_ShutdownContext(ctx->nss);
|
||||
ctx->nss = NULL;
|
||||
}
|
||||
|
||||
/* zeroize the key material */
|
||||
octet_string_set_to_zero(ctx, sizeof(srtp_aes_gcm_ctx_t));
|
||||
srtp_crypto_free(ctx);
|
||||
}
|
||||
|
||||
/* free memory */
|
||||
srtp_crypto_free(c);
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_gcm_nss_context_init(...) initializes the aes_gcm_context
|
||||
* using the value in key[].
|
||||
*
|
||||
* the key is the secret key
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_context_init(void *cv,
|
||||
const uint8_t *key)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
c->dir = srtp_direction_any;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "key: %s",
|
||||
srtp_octet_string_hex_string(key, c->key_size));
|
||||
|
||||
if (c->key) {
|
||||
PK11_FreeSymKey(c->key);
|
||||
c->key = NULL;
|
||||
}
|
||||
|
||||
PK11SlotInfo *slot = PK11_GetBestSlot(CKM_AES_GCM, NULL);
|
||||
if (!slot) {
|
||||
return (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
SECItem key_item = { siBuffer, (unsigned char *)key, c->key_size };
|
||||
c->key = PK11_ImportSymKey(slot, CKM_AES_GCM, PK11_OriginUnwrap,
|
||||
CKA_ENCRYPT, &key_item, NULL);
|
||||
PK11_FreeSlot(slot);
|
||||
|
||||
if (!c->key) {
|
||||
return (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_gcm_nss_set_iv(c, iv) sets the counter value to the exor of iv with
|
||||
* the offset
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_set_iv(
|
||||
void *cv,
|
||||
uint8_t *iv,
|
||||
srtp_cipher_direction_t direction)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
if (direction != srtp_direction_encrypt &&
|
||||
direction != srtp_direction_decrypt) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
c->dir = direction;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "setting iv: %s",
|
||||
srtp_octet_string_hex_string(iv, GCM_IV_LEN));
|
||||
|
||||
memcpy(c->iv, iv, GCM_IV_LEN);
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function processes the AAD
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* aad Additional data to process for AEAD cipher suites
|
||||
* aad_len length of aad buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_set_aad(void *cv,
|
||||
const uint8_t *aad,
|
||||
uint32_t aad_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "setting AAD: %s",
|
||||
srtp_octet_string_hex_string(aad, aad_len));
|
||||
|
||||
if (aad_len + c->aad_size > MAX_AD_SIZE) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
memcpy(c->aad + c->aad_size, aad, aad_len);
|
||||
c->aad_size += aad_len;
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_do_crypto(void *cv,
|
||||
int encrypt,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
c->params.pIv = c->iv;
|
||||
c->params.ulIvLen = GCM_IV_LEN;
|
||||
c->params.pAAD = c->aad;
|
||||
c->params.ulAADLen = c->aad_size;
|
||||
|
||||
// Reset AAD
|
||||
c->aad_size = 0;
|
||||
|
||||
int rv;
|
||||
SECItem param = { siBuffer, (unsigned char *)&c->params,
|
||||
sizeof(CK_GCM_PARAMS) };
|
||||
if (encrypt) {
|
||||
rv = PK11_Encrypt(c->key, CKM_AES_GCM, ¶m, buf, enc_len,
|
||||
*enc_len + 16, buf, *enc_len);
|
||||
} else {
|
||||
rv = PK11_Decrypt(c->key, CKM_AES_GCM, ¶m, buf, enc_len, *enc_len,
|
||||
buf, *enc_len);
|
||||
}
|
||||
|
||||
srtp_err_status_t status = (srtp_err_status_ok);
|
||||
if (rv != SECSuccess) {
|
||||
status = (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function encrypts a buffer using AES GCM mode
|
||||
*
|
||||
* XXX(rlb@ipv.sx): We're required to break off and cache the tag
|
||||
* here, because the get_tag() method is separate and the tests expect
|
||||
* encrypt() not to change the size of the plaintext. It might be
|
||||
* good to update the calling API so that this is cleaner.
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_encrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
// When we get a non-NULL buffer, we know that the caller is
|
||||
// prepared to also take the tag. When we get a NULL buffer,
|
||||
// even though there's no data, we need to give NSS a buffer
|
||||
// where it can write the tag. We can't just use c->tag because
|
||||
// memcpy has undefined behavior on overlapping ranges.
|
||||
unsigned char tagbuf[16];
|
||||
unsigned char *non_null_buf = buf;
|
||||
if (!non_null_buf && (*enc_len == 0)) {
|
||||
non_null_buf = tagbuf;
|
||||
} else if (!non_null_buf) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
srtp_err_status_t status =
|
||||
srtp_aes_gcm_nss_do_crypto(cv, 1, non_null_buf, enc_len);
|
||||
if (status != srtp_err_status_ok) {
|
||||
return status;
|
||||
}
|
||||
|
||||
memcpy(c->tag, non_null_buf + (*enc_len - c->tag_size), c->tag_size);
|
||||
*enc_len -= c->tag_size;
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function calculates and returns the GCM tag for a given context.
|
||||
* This should be called after encrypting the data. The *len value
|
||||
* is increased by the tag size. The caller must ensure that *buf has
|
||||
* enough room to accept the appended tag.
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_get_tag(void *cv,
|
||||
uint8_t *buf,
|
||||
uint32_t *len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
*len = c->tag_size;
|
||||
memcpy(buf, c->tag, c->tag_size);
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function decrypts a buffer using AES GCM mode
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_decrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_err_status_t status = srtp_aes_gcm_nss_do_crypto(cv, 0, buf, enc_len);
|
||||
if (status != srtp_err_status_ok) {
|
||||
int err = PR_GetError();
|
||||
if (err == SEC_ERROR_BAD_DATA) {
|
||||
status = srtp_err_status_auth_fail;
|
||||
}
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Name of this crypto engine
|
||||
*/
|
||||
static const char srtp_aes_gcm_128_nss_description[] = "AES-128 GCM using NSS";
|
||||
static const char srtp_aes_gcm_256_nss_description[] = "AES-256 GCM using NSS";
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
/* clang-format off */
|
||||
const srtp_cipher_type_t srtp_aes_gcm_128 = {
|
||||
srtp_aes_gcm_nss_alloc,
|
||||
srtp_aes_gcm_nss_dealloc,
|
||||
srtp_aes_gcm_nss_context_init,
|
||||
srtp_aes_gcm_nss_set_aad,
|
||||
srtp_aes_gcm_nss_encrypt,
|
||||
srtp_aes_gcm_nss_decrypt,
|
||||
srtp_aes_gcm_nss_set_iv,
|
||||
srtp_aes_gcm_nss_get_tag,
|
||||
srtp_aes_gcm_128_nss_description,
|
||||
&srtp_aes_gcm_128_test_case_0,
|
||||
SRTP_AES_GCM_128
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
/* clang-format off */
|
||||
const srtp_cipher_type_t srtp_aes_gcm_256 = {
|
||||
srtp_aes_gcm_nss_alloc,
|
||||
srtp_aes_gcm_nss_dealloc,
|
||||
srtp_aes_gcm_nss_context_init,
|
||||
srtp_aes_gcm_nss_set_aad,
|
||||
srtp_aes_gcm_nss_encrypt,
|
||||
srtp_aes_gcm_nss_decrypt,
|
||||
srtp_aes_gcm_nss_set_iv,
|
||||
srtp_aes_gcm_nss_get_tag,
|
||||
srtp_aes_gcm_256_nss_description,
|
||||
&srtp_aes_gcm_256_test_case_0,
|
||||
SRTP_AES_GCM_256
|
||||
};
|
||||
/* clang-format on */
|
||||
@@ -49,12 +49,12 @@
|
||||
#endif
|
||||
|
||||
#include <openssl/evp.h>
|
||||
#include "aes_icm_ossl.h"
|
||||
#include "aes_gcm_ossl.h"
|
||||
#include "aes_gcm.h"
|
||||
#include "alloc.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "crypto_types.h"
|
||||
#include "cipher_types.h"
|
||||
#include "cipher_test_cases.h"
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_gcm = {
|
||||
0, /* debugging is off by default */
|
||||
@@ -124,13 +124,13 @@ static srtp_err_status_t srtp_aes_gcm_openssl_alloc(srtp_cipher_t **c,
|
||||
/* setup cipher attributes */
|
||||
switch (key_len) {
|
||||
case SRTP_AES_GCM_128_KEY_LEN_WSALT:
|
||||
(*c)->type = &srtp_aes_gcm_128_openssl;
|
||||
(*c)->type = &srtp_aes_gcm_128;
|
||||
(*c)->algorithm = SRTP_AES_GCM_128;
|
||||
gcm->key_size = SRTP_AES_128_KEY_LEN;
|
||||
gcm->tag_len = tlen;
|
||||
break;
|
||||
case SRTP_AES_GCM_256_KEY_LEN_WSALT:
|
||||
(*c)->type = &srtp_aes_gcm_256_openssl;
|
||||
(*c)->type = &srtp_aes_gcm_256;
|
||||
(*c)->algorithm = SRTP_AES_GCM_256;
|
||||
gcm->key_size = SRTP_AES_256_KEY_LEN;
|
||||
gcm->tag_len = tlen;
|
||||
@@ -193,6 +193,7 @@ static srtp_err_status_t srtp_aes_gcm_openssl_context_init(void *cv,
|
||||
break;
|
||||
}
|
||||
|
||||
EVP_CIPHER_CTX_cleanup(c->ctx);
|
||||
if (!EVP_CipherInit_ex(c->ctx, evp, NULL, key, NULL, 0)) {
|
||||
return (srtp_err_status_init_fail);
|
||||
}
|
||||
@@ -218,7 +219,7 @@ static srtp_err_status_t srtp_aes_gcm_openssl_set_iv(
|
||||
c->dir = direction;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "setting iv: %s",
|
||||
v128_hex_string((v128_t *)iv));
|
||||
srtp_octet_string_hex_string(iv, 12));
|
||||
|
||||
if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IVLEN, 12, 0)) {
|
||||
return (srtp_err_status_init_fail);
|
||||
@@ -247,20 +248,31 @@ static srtp_err_status_t srtp_aes_gcm_openssl_set_aad(void *cv,
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
int rv;
|
||||
|
||||
/*
|
||||
* Set dummy tag, OpenSSL requires the Tag to be set before
|
||||
* processing AAD
|
||||
*/
|
||||
debug_print(srtp_mod_aes_gcm, "setting AAD: %s",
|
||||
srtp_octet_string_hex_string(aad, aad_len));
|
||||
|
||||
/*
|
||||
* OpenSSL never write to address pointed by the last parameter of
|
||||
* EVP_CIPHER_CTX_ctrl while EVP_CTRL_GCM_SET_TAG (in reality,
|
||||
* OpenSSL copy its content to the context), so we can make
|
||||
* aad read-only in this function and all its wrappers.
|
||||
* EVP_CTRL_GCM_SET_TAG can only be used when decrypting
|
||||
*/
|
||||
unsigned char dummy_tag[GCM_AUTH_TAG_LEN];
|
||||
memset(dummy_tag, 0x0, GCM_AUTH_TAG_LEN);
|
||||
EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len, &dummy_tag);
|
||||
if (c->dir == srtp_direction_decrypt) {
|
||||
/*
|
||||
* Set dummy tag, OpenSSL requires the Tag to be set before
|
||||
* processing AAD
|
||||
*/
|
||||
|
||||
/*
|
||||
* OpenSSL never write to address pointed by the last parameter of
|
||||
* EVP_CIPHER_CTX_ctrl while EVP_CTRL_GCM_SET_TAG (in reality,
|
||||
* OpenSSL copy its content to the context), so we can make
|
||||
* aad read-only in this function and all its wrappers.
|
||||
*/
|
||||
unsigned char dummy_tag[GCM_AUTH_TAG_LEN];
|
||||
memset(dummy_tag, 0x0, GCM_AUTH_TAG_LEN);
|
||||
if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len,
|
||||
&dummy_tag)) {
|
||||
return (srtp_err_status_algo_fail);
|
||||
}
|
||||
}
|
||||
|
||||
rv = EVP_Cipher(c->ctx, NULL, aad, aad_len);
|
||||
if (rv != aad_len) {
|
||||
@@ -319,7 +331,9 @@ static srtp_err_status_t srtp_aes_gcm_openssl_get_tag(void *cv,
|
||||
/*
|
||||
* Retreive the tag
|
||||
*/
|
||||
EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_GET_TAG, c->tag_len, buf);
|
||||
if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_GET_TAG, c->tag_len, buf)) {
|
||||
return (srtp_err_status_algo_fail);
|
||||
}
|
||||
|
||||
/*
|
||||
* Increase encryption length by desired tag size
|
||||
@@ -349,8 +363,10 @@ static srtp_err_status_t srtp_aes_gcm_openssl_decrypt(void *cv,
|
||||
/*
|
||||
* Set the tag before decrypting
|
||||
*/
|
||||
EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len,
|
||||
buf + (*enc_len - c->tag_len));
|
||||
if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len,
|
||||
buf + (*enc_len - c->tag_len))) {
|
||||
return (srtp_err_status_auth_fail);
|
||||
}
|
||||
EVP_Cipher(c->ctx, buf, buf, *enc_len - c->tag_len);
|
||||
|
||||
/*
|
||||
@@ -377,178 +393,10 @@ static const char srtp_aes_gcm_128_openssl_description[] =
|
||||
static const char srtp_aes_gcm_256_openssl_description[] =
|
||||
"AES-256 GCM using openssl";
|
||||
|
||||
/*
|
||||
* KAT values for AES self-test. These
|
||||
* values we're derived from independent test code
|
||||
* using OpenSSL.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_key[SRTP_AES_GCM_128_KEY_LEN_WSALT] = {
|
||||
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
|
||||
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
|
||||
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
|
||||
0x09, 0x0a, 0x0b, 0x0c,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_gcm_test_case_0_iv[12] = {
|
||||
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
||||
0xde, 0xca, 0xf8, 0x88
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_plaintext[60] = {
|
||||
0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
|
||||
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
|
||||
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
|
||||
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
|
||||
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
|
||||
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
|
||||
0xba, 0x63, 0x7b, 0x39
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_aad[20] = {
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xab, 0xad, 0xda, 0xd2
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_ciphertext[76] = {
|
||||
0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
|
||||
0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
|
||||
0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
|
||||
0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
|
||||
0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
|
||||
0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
|
||||
0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
|
||||
0x3d, 0x58, 0xe0, 0x91,
|
||||
/* the last 16 bytes are the tag */
|
||||
0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
|
||||
0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_0a = {
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_0_plaintext, /* plaintext */
|
||||
68, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_0_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN_8, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_0 = {
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_0_plaintext, /* plaintext */
|
||||
76, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_0_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN, /* */
|
||||
&srtp_aes_gcm_test_case_0a /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_key[SRTP_AES_GCM_256_KEY_LEN_WSALT] = {
|
||||
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0x54, 0x66, 0x93, 0x1c,
|
||||
0xaf, 0xf5, 0x26, 0x9a, 0x21, 0xd5, 0x14, 0xb2,
|
||||
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
|
||||
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
|
||||
0x09, 0x0a, 0x0b, 0x0c,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_gcm_test_case_1_iv[12] = {
|
||||
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
||||
0xde, 0xca, 0xf8, 0x88
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_plaintext[60] = {
|
||||
0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
|
||||
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
|
||||
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
|
||||
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
|
||||
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
|
||||
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
|
||||
0xba, 0x63, 0x7b, 0x39
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_aad[20] = {
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xab, 0xad, 0xda, 0xd2
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_ciphertext[76] = {
|
||||
0x0b, 0x11, 0xcf, 0xaf, 0x68, 0x4d, 0xae, 0x46,
|
||||
0xc7, 0x90, 0xb8, 0x8e, 0xb7, 0x6a, 0x76, 0x2a,
|
||||
0x94, 0x82, 0xca, 0xab, 0x3e, 0x39, 0xd7, 0x86,
|
||||
0x1b, 0xc7, 0x93, 0xed, 0x75, 0x7f, 0x23, 0x5a,
|
||||
0xda, 0xfd, 0xd3, 0xe2, 0x0e, 0x80, 0x87, 0xa9,
|
||||
0x6d, 0xd7, 0xe2, 0x6a, 0x7d, 0x5f, 0xb4, 0x80,
|
||||
0xef, 0xef, 0xc5, 0x29, 0x12, 0xd1, 0xaa, 0x10,
|
||||
0x09, 0xc9, 0x86, 0xc1,
|
||||
/* the last 16 bytes are the tag */
|
||||
0x45, 0xbc, 0x03, 0xe6, 0xe1, 0xac, 0x0a, 0x9f,
|
||||
0x81, 0xcb, 0x8e, 0x5b, 0x46, 0x65, 0x63, 0x1d,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_1a = {
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_1_key, /* key */
|
||||
srtp_aes_gcm_test_case_1_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_1_plaintext, /* plaintext */
|
||||
68, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_1_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_1_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN_8, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_1 = {
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_1_key, /* key */
|
||||
srtp_aes_gcm_test_case_1_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_1_plaintext, /* plaintext */
|
||||
76, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_1_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_1_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN, /* */
|
||||
&srtp_aes_gcm_test_case_1a /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_gcm_128_openssl = {
|
||||
const srtp_cipher_type_t srtp_aes_gcm_128 = {
|
||||
srtp_aes_gcm_openssl_alloc,
|
||||
srtp_aes_gcm_openssl_dealloc,
|
||||
srtp_aes_gcm_openssl_context_init,
|
||||
@@ -558,14 +406,14 @@ const srtp_cipher_type_t srtp_aes_gcm_128_openssl = {
|
||||
srtp_aes_gcm_openssl_set_iv,
|
||||
srtp_aes_gcm_openssl_get_tag,
|
||||
srtp_aes_gcm_128_openssl_description,
|
||||
&srtp_aes_gcm_test_case_0,
|
||||
&srtp_aes_gcm_128_test_case_0,
|
||||
SRTP_AES_GCM_128
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_gcm_256_openssl = {
|
||||
const srtp_cipher_type_t srtp_aes_gcm_256 = {
|
||||
srtp_aes_gcm_openssl_alloc,
|
||||
srtp_aes_gcm_openssl_dealloc,
|
||||
srtp_aes_gcm_openssl_context_init,
|
||||
@@ -575,6 +423,6 @@ const srtp_cipher_type_t srtp_aes_gcm_256_openssl = {
|
||||
srtp_aes_gcm_openssl_set_iv,
|
||||
srtp_aes_gcm_openssl_get_tag,
|
||||
srtp_aes_gcm_256_openssl_description,
|
||||
&srtp_aes_gcm_test_case_1,
|
||||
&srtp_aes_gcm_256_test_case_0,
|
||||
SRTP_AES_GCM_256
|
||||
};
|
||||
|
||||
@@ -52,6 +52,7 @@
|
||||
#include "aes_icm.h"
|
||||
#include "alloc.h"
|
||||
#include "cipher_types.h"
|
||||
#include "cipher_test_cases.h"
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_icm = {
|
||||
0, /* debugging is off by default */
|
||||
@@ -399,104 +400,6 @@ static const char srtp_aes_icm_128_description[] =
|
||||
static const char srtp_aes_icm_256_description[] =
|
||||
"AES-256 integer counter mode";
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_key[SRTP_AES_ICM_128_KEY_LEN_WSALT] = {
|
||||
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
|
||||
0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_128_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_ciphertext[32] = {
|
||||
0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80,
|
||||
0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4,
|
||||
0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7,
|
||||
0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_128_test_case_0 = {
|
||||
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_128_test_case_0_key, /* key */
|
||||
srtp_aes_icm_128_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_128_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_128_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_key[SRTP_AES_ICM_256_KEY_LEN_WSALT] = {
|
||||
0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70,
|
||||
0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92,
|
||||
0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82,
|
||||
0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_256_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_ciphertext[32] = {
|
||||
0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25,
|
||||
0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4,
|
||||
0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6,
|
||||
0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_0 = {
|
||||
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_256_test_case_0_key, /* key */
|
||||
srtp_aes_icm_256_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_256_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_256_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL, /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
|
||||
@@ -0,0 +1,371 @@
|
||||
/*
|
||||
* aes_icm_mbedtls.c
|
||||
*
|
||||
* AES Integer Counter Mode
|
||||
*
|
||||
* YongCheng Yang
|
||||
*/
|
||||
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
#include <mbedtls/aes.h>
|
||||
#include "aes_icm_ext.h"
|
||||
#include "crypto_types.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "alloc.h"
|
||||
#include "cipher_types.h"
|
||||
#include "cipher_test_cases.h"
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_icm = {
|
||||
0, /* debugging is off by default */
|
||||
"aes icm mbedtls" /* printable module name */
|
||||
};
|
||||
|
||||
/*
|
||||
* integer counter mode works as follows:
|
||||
*
|
||||
* https://tools.ietf.org/html/rfc3711#section-4.1.1
|
||||
*
|
||||
* E(k, IV) || E(k, IV + 1 mod 2^128) || E(k, IV + 2 mod 2^128) ...
|
||||
* IV = (k_s * 2^16) XOR (SSRC * 2^64) XOR (i * 2^16)
|
||||
*
|
||||
* IV SHALL be defined by the SSRC, the SRTP packet index i,
|
||||
* and the SRTP session salting key k_s.
|
||||
*
|
||||
* SSRC: 32bits.
|
||||
* Sequence number: 16bits.
|
||||
* nonce is 64bits. .
|
||||
* packet index = ROC || SEQ. (ROC: Rollover counter)
|
||||
*
|
||||
* 16 bits
|
||||
* <----->
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
* | nonce | packet index | ctr |---+
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ v
|
||||
* | salt |000000|->(+)
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +---------+
|
||||
* | encrypt |
|
||||
* +---------+
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* | keystream block |<--+
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
*
|
||||
* All fields are big-endian
|
||||
*
|
||||
* ctr is the block counter, which increments from zero for
|
||||
* each packet (16 bits wide)
|
||||
*
|
||||
* packet index is distinct for each packet (48 bits wide)
|
||||
*
|
||||
* nonce can be distinct across many uses of the same key, or
|
||||
* can be a fixed value per key, or can be per-packet randomness
|
||||
* (64 bits)
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* This function allocates a new instance of this crypto engine.
|
||||
* The key_len parameter should be one of 30, 38, or 46 for
|
||||
* AES-128, AES-192, and AES-256 respectively. Note, this key_len
|
||||
* value is inflated, as it also accounts for the 112 bit salt
|
||||
* value. The tlen argument is for the AEAD tag length, which
|
||||
* isn't used in counter mode.
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_mbedtls_alloc(srtp_cipher_t **c,
|
||||
int key_len,
|
||||
int tlen)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *icm;
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d",
|
||||
key_len);
|
||||
|
||||
/*
|
||||
* Verify the key_len is valid for one of: AES-128/192/256
|
||||
*/
|
||||
if (key_len != SRTP_AES_ICM_128_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_ICM_192_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_ICM_256_KEY_LEN_WSALT) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
/* allocate memory a cipher of type aes_icm */
|
||||
*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
|
||||
if (*c == NULL) {
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t));
|
||||
if (icm == NULL) {
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
icm->ctx =
|
||||
(mbedtls_aes_context *)srtp_crypto_alloc(sizeof(mbedtls_aes_context));
|
||||
if (icm->ctx == NULL) {
|
||||
srtp_crypto_free(icm);
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
mbedtls_aes_init(icm->ctx);
|
||||
|
||||
/* set pointers */
|
||||
(*c)->state = icm;
|
||||
|
||||
/* setup cipher parameters */
|
||||
switch (key_len) {
|
||||
case SRTP_AES_ICM_128_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_128;
|
||||
(*c)->type = &srtp_aes_icm_128;
|
||||
icm->key_size = SRTP_AES_128_KEY_LEN;
|
||||
break;
|
||||
case SRTP_AES_ICM_192_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_192;
|
||||
(*c)->type = &srtp_aes_icm_192;
|
||||
icm->key_size = SRTP_AES_192_KEY_LEN;
|
||||
break;
|
||||
case SRTP_AES_ICM_256_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_256;
|
||||
(*c)->type = &srtp_aes_icm_256;
|
||||
icm->key_size = SRTP_AES_256_KEY_LEN;
|
||||
break;
|
||||
}
|
||||
|
||||
/* set key size */
|
||||
(*c)->key_len = key_len;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function deallocates an instance of this engine
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_mbedtls_dealloc(srtp_cipher_t *c)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *ctx;
|
||||
|
||||
if (c == NULL) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
/*
|
||||
* Free the aes context
|
||||
*/
|
||||
ctx = (srtp_aes_icm_ctx_t *)c->state;
|
||||
if (ctx != NULL) {
|
||||
mbedtls_aes_free(ctx->ctx);
|
||||
srtp_crypto_free(ctx->ctx);
|
||||
/* zeroize the key material */
|
||||
octet_string_set_to_zero(ctx, sizeof(srtp_aes_icm_ctx_t));
|
||||
srtp_crypto_free(ctx);
|
||||
}
|
||||
|
||||
/* free memory */
|
||||
srtp_crypto_free(c);
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
static srtp_err_status_t srtp_aes_icm_mbedtls_context_init(void *cv,
|
||||
const uint8_t *key)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
uint32_t key_size_in_bits = (c->key_size << 3);
|
||||
int errcode = 0;
|
||||
|
||||
/*
|
||||
* set counter and initial values to 'offset' value, being careful not to
|
||||
* go past the end of the key buffer
|
||||
*/
|
||||
v128_set_to_zero(&c->counter);
|
||||
v128_set_to_zero(&c->offset);
|
||||
memcpy(&c->counter, key + c->key_size, SRTP_SALT_LEN);
|
||||
memcpy(&c->offset, key + c->key_size, SRTP_SALT_LEN);
|
||||
|
||||
/* force last two octets of the offset to zero (for srtp compatibility) */
|
||||
c->offset.v8[SRTP_SALT_LEN] = c->offset.v8[SRTP_SALT_LEN + 1] = 0;
|
||||
c->counter.v8[SRTP_SALT_LEN] = c->counter.v8[SRTP_SALT_LEN + 1] = 0;
|
||||
debug_print(srtp_mod_aes_icm, "key: %s",
|
||||
srtp_octet_string_hex_string(key, c->key_size));
|
||||
debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset));
|
||||
|
||||
switch (c->key_size) {
|
||||
case SRTP_AES_256_KEY_LEN:
|
||||
case SRTP_AES_192_KEY_LEN:
|
||||
case SRTP_AES_128_KEY_LEN:
|
||||
break;
|
||||
default:
|
||||
return srtp_err_status_bad_param;
|
||||
break;
|
||||
}
|
||||
|
||||
errcode = mbedtls_aes_setkey_enc(c->ctx, key, key_size_in_bits);
|
||||
if (errcode != 0) {
|
||||
debug_print(srtp_mod_aes_icm, "errCode: %d", errcode);
|
||||
}
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with
|
||||
* the offset
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_mbedtls_set_iv(
|
||||
void *cv,
|
||||
uint8_t *iv,
|
||||
srtp_cipher_direction_t dir)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
v128_t nonce;
|
||||
c->nc_off = 0;
|
||||
/* set nonce (for alignment) */
|
||||
v128_copy_octet_string(&nonce, iv);
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce));
|
||||
|
||||
v128_xor(&c->counter, &c->offset, &nonce);
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "set_counter: %s",
|
||||
v128_hex_string(&c->counter));
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function encrypts a buffer using AES CTR mode
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_mbedtls_encrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
|
||||
int errCode = 0;
|
||||
debug_print(srtp_mod_aes_icm, "rs0: %s", v128_hex_string(&c->counter));
|
||||
|
||||
errCode =
|
||||
mbedtls_aes_crypt_ctr(c->ctx, *enc_len, &(c->nc_off), c->counter.v8,
|
||||
c->stream_block.v8, buf, buf);
|
||||
if (errCode != 0) {
|
||||
debug_print(srtp_mod_aes_icm, "encrypt error: %d", errCode);
|
||||
return srtp_err_status_cipher_fail;
|
||||
}
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* Name of this crypto engine
|
||||
*/
|
||||
static const char srtp_aes_icm_128_mbedtls_description[] =
|
||||
"AES-128 counter mode using mbedtls";
|
||||
static const char srtp_aes_icm_192_mbedtls_description[] =
|
||||
"AES-192 counter mode using mbedtls";
|
||||
static const char srtp_aes_icm_256_mbedtls_description[] =
|
||||
"AES-256 counter mode using mbedtls";
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_128 = {
|
||||
srtp_aes_icm_mbedtls_alloc, /* */
|
||||
srtp_aes_icm_mbedtls_dealloc, /* */
|
||||
srtp_aes_icm_mbedtls_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_mbedtls_encrypt, /* */
|
||||
srtp_aes_icm_mbedtls_encrypt, /* */
|
||||
srtp_aes_icm_mbedtls_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_128_mbedtls_description, /* */
|
||||
&srtp_aes_icm_128_test_case_0, /* */
|
||||
SRTP_AES_ICM_128 /* */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_192 = {
|
||||
srtp_aes_icm_mbedtls_alloc, /* */
|
||||
srtp_aes_icm_mbedtls_dealloc, /* */
|
||||
srtp_aes_icm_mbedtls_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_mbedtls_encrypt, /* */
|
||||
srtp_aes_icm_mbedtls_encrypt, /* */
|
||||
srtp_aes_icm_mbedtls_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_192_mbedtls_description, /* */
|
||||
&srtp_aes_icm_192_test_case_0, /* */
|
||||
SRTP_AES_ICM_192 /* */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_256 = {
|
||||
srtp_aes_icm_mbedtls_alloc, /* */
|
||||
srtp_aes_icm_mbedtls_dealloc, /* */
|
||||
srtp_aes_icm_mbedtls_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_mbedtls_encrypt, /* */
|
||||
srtp_aes_icm_mbedtls_encrypt, /* */
|
||||
srtp_aes_icm_mbedtls_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_256_mbedtls_description, /* */
|
||||
&srtp_aes_icm_256_test_case_0, /* */
|
||||
SRTP_AES_ICM_256 /* */
|
||||
};
|
||||
@@ -0,0 +1,404 @@
|
||||
/*
|
||||
* aes_icm_nss.c
|
||||
*
|
||||
* AES Integer Counter Mode
|
||||
*
|
||||
* Richard L. Barnes
|
||||
* Cisco Systems, Inc.
|
||||
*/
|
||||
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include "aes_icm_ext.h"
|
||||
#include "crypto_types.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "alloc.h"
|
||||
#include "cipher_types.h"
|
||||
#include "cipher_test_cases.h"
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_icm = {
|
||||
0, /* debugging is off by default */
|
||||
"aes icm nss" /* printable module name */
|
||||
};
|
||||
|
||||
/*
|
||||
* integer counter mode works as follows:
|
||||
*
|
||||
* 16 bits
|
||||
* <----->
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
* | nonce | packet index | ctr |---+
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ v
|
||||
* | salt |000000|->(+)
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +---------+
|
||||
* | encrypt |
|
||||
* +---------+
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* | keystream block |<--+
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
*
|
||||
* All fields are big-endian
|
||||
*
|
||||
* ctr is the block counter, which increments from zero for
|
||||
* each packet (16 bits wide)
|
||||
*
|
||||
* packet index is distinct for each packet (48 bits wide)
|
||||
*
|
||||
* nonce can be distinct across many uses of the same key, or
|
||||
* can be a fixed value per key, or can be per-packet randomness
|
||||
* (64 bits)
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* This function allocates a new instance of this crypto engine.
|
||||
* The key_len parameter should be one of 30, 38, or 46 for
|
||||
* AES-128, AES-192, and AES-256 respectively. Note, this key_len
|
||||
* value is inflated, as it also accounts for the 112 bit salt
|
||||
* value. The tlen argument is for the AEAD tag length, which
|
||||
* isn't used in counter mode.
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_alloc(srtp_cipher_t **c,
|
||||
int key_len,
|
||||
int tlen)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *icm;
|
||||
NSSInitContext *nss;
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d",
|
||||
key_len);
|
||||
|
||||
/*
|
||||
* Verify the key_len is valid for one of: AES-128/192/256
|
||||
*/
|
||||
if (key_len != SRTP_AES_ICM_128_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_ICM_192_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_ICM_256_KEY_LEN_WSALT) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
/* Initialize NSS equiv of NSS_NoDB_Init(NULL) */
|
||||
nss = NSS_InitContext("", "", "", "", NULL,
|
||||
NSS_INIT_READONLY | NSS_INIT_NOCERTDB |
|
||||
NSS_INIT_NOMODDB | NSS_INIT_FORCEOPEN |
|
||||
NSS_INIT_OPTIMIZESPACE);
|
||||
if (!nss) {
|
||||
return (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
/* allocate memory a cipher of type aes_icm */
|
||||
*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
|
||||
if (*c == NULL) {
|
||||
NSS_ShutdownContext(nss);
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t));
|
||||
if (icm == NULL) {
|
||||
NSS_ShutdownContext(nss);
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
icm->key = NULL;
|
||||
icm->ctx = NULL;
|
||||
icm->nss = nss;
|
||||
|
||||
/* set pointers */
|
||||
(*c)->state = icm;
|
||||
|
||||
/* setup cipher parameters */
|
||||
switch (key_len) {
|
||||
case SRTP_AES_ICM_128_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_128;
|
||||
(*c)->type = &srtp_aes_icm_128;
|
||||
icm->key_size = SRTP_AES_128_KEY_LEN;
|
||||
break;
|
||||
case SRTP_AES_ICM_192_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_192;
|
||||
(*c)->type = &srtp_aes_icm_192;
|
||||
icm->key_size = SRTP_AES_192_KEY_LEN;
|
||||
break;
|
||||
case SRTP_AES_ICM_256_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_256;
|
||||
(*c)->type = &srtp_aes_icm_256;
|
||||
icm->key_size = SRTP_AES_256_KEY_LEN;
|
||||
break;
|
||||
}
|
||||
|
||||
/* set key size */
|
||||
(*c)->key_len = key_len;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function deallocates an instance of this engine
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_dealloc(srtp_cipher_t *c)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *ctx;
|
||||
|
||||
ctx = (srtp_aes_icm_ctx_t *)c->state;
|
||||
if (ctx) {
|
||||
/* free any PK11 values that have been created */
|
||||
if (ctx->key) {
|
||||
PK11_FreeSymKey(ctx->key);
|
||||
ctx->key = NULL;
|
||||
}
|
||||
|
||||
if (ctx->ctx) {
|
||||
PK11_DestroyContext(ctx->ctx, PR_TRUE);
|
||||
ctx->ctx = NULL;
|
||||
}
|
||||
|
||||
if (ctx->nss) {
|
||||
NSS_ShutdownContext(ctx->nss);
|
||||
ctx->nss = NULL;
|
||||
}
|
||||
|
||||
/* zeroize everything */
|
||||
octet_string_set_to_zero(ctx, sizeof(srtp_aes_icm_ctx_t));
|
||||
srtp_crypto_free(ctx);
|
||||
}
|
||||
|
||||
/* free memory */
|
||||
srtp_crypto_free(c);
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_icm_nss_context_init(...) initializes the aes_icm_context
|
||||
* using the value in key[].
|
||||
*
|
||||
* the key is the secret key
|
||||
*
|
||||
* the salt is unpredictable (but not necessarily secret) data which
|
||||
* randomizes the starting point in the keystream
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_context_init(void *cv,
|
||||
const uint8_t *key)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
|
||||
/*
|
||||
* set counter and initial values to 'offset' value, being careful not to
|
||||
* go past the end of the key buffer
|
||||
*/
|
||||
v128_set_to_zero(&c->counter);
|
||||
v128_set_to_zero(&c->offset);
|
||||
memcpy(&c->counter, key + c->key_size, SRTP_SALT_LEN);
|
||||
memcpy(&c->offset, key + c->key_size, SRTP_SALT_LEN);
|
||||
|
||||
/* force last two octets of the offset to zero (for srtp compatibility) */
|
||||
c->offset.v8[SRTP_SALT_LEN] = c->offset.v8[SRTP_SALT_LEN + 1] = 0;
|
||||
c->counter.v8[SRTP_SALT_LEN] = c->counter.v8[SRTP_SALT_LEN + 1] = 0;
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "key: %s",
|
||||
srtp_octet_string_hex_string(key, c->key_size));
|
||||
debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset));
|
||||
|
||||
if (c->key) {
|
||||
PK11_FreeSymKey(c->key);
|
||||
c->key = NULL;
|
||||
}
|
||||
|
||||
PK11SlotInfo *slot = PK11_GetBestSlot(CKM_AES_CTR, NULL);
|
||||
if (!slot) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
SECItem keyItem = { siBuffer, (unsigned char *)key, c->key_size };
|
||||
c->key = PK11_ImportSymKey(slot, CKM_AES_CTR, PK11_OriginUnwrap,
|
||||
CKA_ENCRYPT, &keyItem, NULL);
|
||||
PK11_FreeSlot(slot);
|
||||
|
||||
if (!c->key) {
|
||||
return srtp_err_status_cipher_fail;
|
||||
}
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with
|
||||
* the offset
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_set_iv(void *cv,
|
||||
uint8_t *iv,
|
||||
srtp_cipher_direction_t dir)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
v128_t nonce;
|
||||
|
||||
/* set nonce (for alignment) */
|
||||
v128_copy_octet_string(&nonce, iv);
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce));
|
||||
|
||||
v128_xor(&c->counter, &c->offset, &nonce);
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "set_counter: %s",
|
||||
v128_hex_string(&c->counter));
|
||||
|
||||
/* set up the PK11 context now that we have all the info */
|
||||
CK_AES_CTR_PARAMS param;
|
||||
param.ulCounterBits = 16;
|
||||
memcpy(param.cb, &c->counter, 16);
|
||||
|
||||
if (!c->key) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
if (c->ctx) {
|
||||
PK11_DestroyContext(c->ctx, PR_TRUE);
|
||||
}
|
||||
|
||||
SECItem paramItem = { siBuffer, (unsigned char *)¶m,
|
||||
sizeof(CK_AES_CTR_PARAMS) };
|
||||
c->ctx = PK11_CreateContextBySymKey(CKM_AES_CTR, CKA_ENCRYPT, c->key,
|
||||
¶mItem);
|
||||
if (!c->ctx) {
|
||||
return srtp_err_status_cipher_fail;
|
||||
}
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function encrypts a buffer using AES CTR mode
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_encrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
|
||||
if (!c->ctx) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
int rv =
|
||||
PK11_CipherOp(c->ctx, buf, (int *)enc_len, *enc_len, buf, *enc_len);
|
||||
|
||||
srtp_err_status_t status = (srtp_err_status_ok);
|
||||
if (rv != SECSuccess) {
|
||||
status = (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Name of this crypto engine
|
||||
*/
|
||||
static const char srtp_aes_icm_128_nss_description[] =
|
||||
"AES-128 counter mode using NSS";
|
||||
static const char srtp_aes_icm_192_nss_description[] =
|
||||
"AES-192 counter mode using NSS";
|
||||
static const char srtp_aes_icm_256_nss_description[] =
|
||||
"AES-256 counter mode using NSS";
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_128 = {
|
||||
srtp_aes_icm_nss_alloc, /* */
|
||||
srtp_aes_icm_nss_dealloc, /* */
|
||||
srtp_aes_icm_nss_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_128_nss_description, /* */
|
||||
&srtp_aes_icm_128_test_case_0, /* */
|
||||
SRTP_AES_ICM_128 /* */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_192 = {
|
||||
srtp_aes_icm_nss_alloc, /* */
|
||||
srtp_aes_icm_nss_dealloc, /* */
|
||||
srtp_aes_icm_nss_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_192_nss_description, /* */
|
||||
&srtp_aes_icm_192_test_case_0, /* */
|
||||
SRTP_AES_ICM_192 /* */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_256 = {
|
||||
srtp_aes_icm_nss_alloc, /* */
|
||||
srtp_aes_icm_nss_dealloc, /* */
|
||||
srtp_aes_icm_nss_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_256_nss_description, /* */
|
||||
&srtp_aes_icm_256_test_case_0, /* */
|
||||
SRTP_AES_ICM_256 /* */
|
||||
};
|
||||
@@ -53,11 +53,12 @@
|
||||
#endif
|
||||
|
||||
#include <openssl/evp.h>
|
||||
#include "aes_icm_ossl.h"
|
||||
#include "aes_icm_ext.h"
|
||||
#include "crypto_types.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "alloc.h"
|
||||
#include "cipher_types.h"
|
||||
#include "cipher_test_cases.h"
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_icm = {
|
||||
0, /* debugging is off by default */
|
||||
@@ -78,9 +79,9 @@ srtp_debug_module_t srtp_mod_aes_icm = {
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +---------+
|
||||
* | encrypt |
|
||||
* +---------+
|
||||
* |
|
||||
* | encrypt |
|
||||
* +---------+
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* | keystream block |<--+
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
@@ -248,6 +249,7 @@ static srtp_err_status_t srtp_aes_icm_openssl_context_init(void *cv,
|
||||
break;
|
||||
}
|
||||
|
||||
EVP_CIPHER_CTX_cleanup(c->ctx);
|
||||
if (!EVP_EncryptInit_ex(c->ctx, evp, NULL, key, NULL)) {
|
||||
return srtp_err_status_fail;
|
||||
} else {
|
||||
@@ -308,7 +310,7 @@ static srtp_err_status_t srtp_aes_icm_openssl_encrypt(void *cv,
|
||||
}
|
||||
*enc_len = len;
|
||||
|
||||
if (!EVP_EncryptFinal_ex(c->ctx, buf, &len)) {
|
||||
if (!EVP_EncryptFinal_ex(c->ctx, buf + len, &len)) {
|
||||
return srtp_err_status_cipher_fail;
|
||||
}
|
||||
*enc_len += len;
|
||||
@@ -326,165 +328,6 @@ static const char srtp_aes_icm_192_openssl_description[] =
|
||||
static const char srtp_aes_icm_256_openssl_description[] =
|
||||
"AES-256 counter mode using openssl";
|
||||
|
||||
/*
|
||||
* KAT values for AES self-test. These
|
||||
* values came from the legacy libsrtp code.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_key[SRTP_AES_ICM_128_KEY_LEN_WSALT] = {
|
||||
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
|
||||
0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_128_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_ciphertext[32] = {
|
||||
0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80,
|
||||
0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4,
|
||||
0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7,
|
||||
0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_128_test_case_0 = {
|
||||
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_128_test_case_0_key, /* key */
|
||||
srtp_aes_icm_128_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_128_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_128_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES-192-CTR self-test. These
|
||||
* values came from section 7 of RFC 6188.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_key[SRTP_AES_ICM_192_KEY_LEN_WSALT] = {
|
||||
0xea, 0xb2, 0x34, 0x76, 0x4e, 0x51, 0x7b, 0x2d,
|
||||
0x3d, 0x16, 0x0d, 0x58, 0x7d, 0x8c, 0x86, 0x21,
|
||||
0x97, 0x40, 0xf6, 0x5f, 0x99, 0xb6, 0xbc, 0xf7,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_192_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_ciphertext[32] = {
|
||||
0x35, 0x09, 0x6c, 0xba, 0x46, 0x10, 0x02, 0x8d,
|
||||
0xc1, 0xb5, 0x75, 0x03, 0x80, 0x4c, 0xe3, 0x7c,
|
||||
0x5d, 0xe9, 0x86, 0x29, 0x1d, 0xcc, 0xe1, 0x61,
|
||||
0xd5, 0x16, 0x5e, 0xc4, 0x56, 0x8f, 0x5c, 0x9a
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_192_test_case_0 = {
|
||||
SRTP_AES_ICM_192_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_192_test_case_0_key, /* key */
|
||||
srtp_aes_icm_192_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_192_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_192_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES-256-CTR self-test. These
|
||||
* values came from section 7 of RFC 6188.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_key[SRTP_AES_ICM_256_KEY_LEN_WSALT] = {
|
||||
0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70,
|
||||
0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92,
|
||||
0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82,
|
||||
0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_256_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_ciphertext[32] = {
|
||||
0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25,
|
||||
0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4,
|
||||
0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6,
|
||||
0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_0 = {
|
||||
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_256_test_case_0_key, /* key */
|
||||
srtp_aes_icm_256_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_256_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_256_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
|
||||
@@ -49,6 +49,7 @@
|
||||
#endif
|
||||
|
||||
#include "cipher.h"
|
||||
#include "cipher_priv.h"
|
||||
#include "crypto_types.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "alloc.h" /* for crypto_alloc(), crypto_free() */
|
||||
@@ -165,24 +166,11 @@ int srtp_cipher_get_key_length(const srtp_cipher_t *c)
|
||||
}
|
||||
|
||||
/*
|
||||
* A trivial platform independent random source. The random
|
||||
* data is used for some of the cipher self-tests.
|
||||
* A trivial platform independent random source.
|
||||
* For use in test only.
|
||||
*/
|
||||
static srtp_err_status_t srtp_cipher_rand(void *dest, uint32_t len)
|
||||
void srtp_cipher_rand_for_tests(void *dest, uint32_t len)
|
||||
{
|
||||
#if defined(HAVE_RAND_S)
|
||||
uint8_t *dst = (uint8_t *)dest;
|
||||
while (len) {
|
||||
unsigned int val;
|
||||
errno_t err = rand_s(&val);
|
||||
|
||||
if (err != 0)
|
||||
return srtp_err_status_fail;
|
||||
|
||||
*dst++ = val & 0xff;
|
||||
len--;
|
||||
}
|
||||
#else
|
||||
/* Generic C-library (rand()) version */
|
||||
/* This is a random source of last resort */
|
||||
uint8_t *dst = (uint8_t *)dest;
|
||||
@@ -194,8 +182,17 @@ static srtp_err_status_t srtp_cipher_rand(void *dest, uint32_t len)
|
||||
*dst++ = val & 0xff;
|
||||
len--;
|
||||
}
|
||||
#endif
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* A trivial platform independent 32 bit random number.
|
||||
* For use in test only.
|
||||
*/
|
||||
uint32_t srtp_cipher_rand_u32_for_tests(void)
|
||||
{
|
||||
uint32_t r;
|
||||
srtp_cipher_rand_for_tests(&r, sizeof(r));
|
||||
return r;
|
||||
}
|
||||
|
||||
#define SELF_TEST_BUF_OCTETS 128
|
||||
@@ -246,7 +243,7 @@ srtp_err_status_t srtp_cipher_type_test(
|
||||
/*
|
||||
* test the encrypt function
|
||||
*/
|
||||
debug_print(srtp_mod_cipher, "testing encryption", NULL);
|
||||
debug_print0(srtp_mod_cipher, "testing encryption");
|
||||
|
||||
/* initialize cipher */
|
||||
status = srtp_cipher_init(c, test_case->key);
|
||||
@@ -350,7 +347,7 @@ srtp_err_status_t srtp_cipher_type_test(
|
||||
/*
|
||||
* test the decrypt function
|
||||
*/
|
||||
debug_print(srtp_mod_cipher, "testing decryption", NULL);
|
||||
debug_print0(srtp_mod_cipher, "testing decryption");
|
||||
|
||||
/* re-initialize cipher for decryption */
|
||||
status = srtp_cipher_init(c, test_case->key);
|
||||
@@ -465,13 +462,9 @@ srtp_err_status_t srtp_cipher_type_test(
|
||||
uint8_t iv[MAX_KEY_LEN];
|
||||
|
||||
/* choose a length at random (leaving room for IV and padding) */
|
||||
length = rand() % (SELF_TEST_BUF_OCTETS - 64);
|
||||
length = srtp_cipher_rand_u32_for_tests() % (SELF_TEST_BUF_OCTETS - 64);
|
||||
debug_print(srtp_mod_cipher, "random plaintext length %d\n", length);
|
||||
status = srtp_cipher_rand(buffer, length);
|
||||
if (status) {
|
||||
srtp_cipher_dealloc(c);
|
||||
return status;
|
||||
}
|
||||
srtp_cipher_rand_for_tests(buffer, length);
|
||||
|
||||
debug_print(srtp_mod_cipher, "plaintext: %s",
|
||||
srtp_octet_string_hex_string(buffer, length));
|
||||
@@ -486,18 +479,10 @@ srtp_err_status_t srtp_cipher_type_test(
|
||||
srtp_cipher_dealloc(c);
|
||||
return srtp_err_status_cant_check;
|
||||
}
|
||||
status = srtp_cipher_rand(key, test_case->key_length_octets);
|
||||
if (status) {
|
||||
srtp_cipher_dealloc(c);
|
||||
return status;
|
||||
}
|
||||
srtp_cipher_rand_for_tests(key, test_case->key_length_octets);
|
||||
|
||||
/* chose a random initialization vector */
|
||||
status = srtp_cipher_rand(iv, MAX_KEY_LEN);
|
||||
if (status) {
|
||||
srtp_cipher_dealloc(c);
|
||||
return status;
|
||||
}
|
||||
srtp_cipher_rand_for_tests(iv, MAX_KEY_LEN);
|
||||
|
||||
/* initialize cipher */
|
||||
status = srtp_cipher_init(c, key);
|
||||
|
||||
@@ -0,0 +1,365 @@
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2021, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "cipher_test_cases.h"
|
||||
#include <stddef.h>
|
||||
|
||||
/*
|
||||
* KAT values for AES self-test. These
|
||||
* values came from the legacy libsrtp code.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_key[SRTP_AES_ICM_128_KEY_LEN_WSALT] = {
|
||||
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
|
||||
0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_128_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_ciphertext[32] = {
|
||||
0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80,
|
||||
0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4,
|
||||
0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7,
|
||||
0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
const srtp_cipher_test_case_t srtp_aes_icm_128_test_case_0 = {
|
||||
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_128_test_case_0_key, /* key */
|
||||
srtp_aes_icm_128_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_128_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_128_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES-192-CTR self-test. These
|
||||
* values came from section 7 of RFC 6188.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_key[SRTP_AES_ICM_192_KEY_LEN_WSALT] = {
|
||||
0xea, 0xb2, 0x34, 0x76, 0x4e, 0x51, 0x7b, 0x2d,
|
||||
0x3d, 0x16, 0x0d, 0x58, 0x7d, 0x8c, 0x86, 0x21,
|
||||
0x97, 0x40, 0xf6, 0x5f, 0x99, 0xb6, 0xbc, 0xf7,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_192_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_ciphertext[32] = {
|
||||
0x35, 0x09, 0x6c, 0xba, 0x46, 0x10, 0x02, 0x8d,
|
||||
0xc1, 0xb5, 0x75, 0x03, 0x80, 0x4c, 0xe3, 0x7c,
|
||||
0x5d, 0xe9, 0x86, 0x29, 0x1d, 0xcc, 0xe1, 0x61,
|
||||
0xd5, 0x16, 0x5e, 0xc4, 0x56, 0x8f, 0x5c, 0x9a
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
const srtp_cipher_test_case_t srtp_aes_icm_192_test_case_0 = {
|
||||
SRTP_AES_ICM_192_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_192_test_case_0_key, /* key */
|
||||
srtp_aes_icm_192_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_192_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_192_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES-256-CTR self-test. These
|
||||
* values came from section 7 of RFC 6188.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_key[SRTP_AES_ICM_256_KEY_LEN_WSALT] = {
|
||||
0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70,
|
||||
0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92,
|
||||
0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82,
|
||||
0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_256_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_ciphertext[32] = {
|
||||
0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25,
|
||||
0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4,
|
||||
0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6,
|
||||
0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_0 = {
|
||||
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_256_test_case_0_key, /* key */
|
||||
srtp_aes_icm_256_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_256_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_256_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES self-test. These
|
||||
* values we're derived from independent test code
|
||||
* using OpenSSL.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_128_test_case_0_key[SRTP_AES_GCM_128_KEY_LEN_WSALT] = {
|
||||
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
|
||||
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
|
||||
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
|
||||
0x09, 0x0a, 0x0b, 0x0c,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_gcm_128_test_case_0_iv[12] = {
|
||||
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
||||
0xde, 0xca, 0xf8, 0x88
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_128_test_case_0_plaintext[60] = {
|
||||
0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
|
||||
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
|
||||
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
|
||||
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
|
||||
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
|
||||
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
|
||||
0xba, 0x63, 0x7b, 0x39
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_128_test_case_0_aad[20] = {
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xab, 0xad, 0xda, 0xd2
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_128_test_case_0_ciphertext[76] = {
|
||||
0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
|
||||
0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
|
||||
0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
|
||||
0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
|
||||
0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
|
||||
0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
|
||||
0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
|
||||
0x3d, 0x58, 0xe0, 0x91,
|
||||
/* the last 16 bytes are the tag */
|
||||
0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
|
||||
0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_128_test_case_0a = {
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_128_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_128_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_128_test_case_0_plaintext, /* plaintext */
|
||||
68, /* octets in ciphertext */
|
||||
srtp_aes_gcm_128_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_128_test_case_0_aad, /* AAD */
|
||||
8, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
const srtp_cipher_test_case_t srtp_aes_gcm_128_test_case_0 = {
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_128_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_128_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_128_test_case_0_plaintext, /* plaintext */
|
||||
76, /* octets in ciphertext */
|
||||
srtp_aes_gcm_128_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_128_test_case_0_aad, /* AAD */
|
||||
16, /* */
|
||||
&srtp_aes_gcm_128_test_case_0a /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_256_test_case_0_key[SRTP_AES_GCM_256_KEY_LEN_WSALT] = {
|
||||
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0x54, 0x66, 0x93, 0x1c,
|
||||
0xaf, 0xf5, 0x26, 0x9a, 0x21, 0xd5, 0x14, 0xb2,
|
||||
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
|
||||
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
|
||||
0x09, 0x0a, 0x0b, 0x0c,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_gcm_256_test_case_0_iv[12] = {
|
||||
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
||||
0xde, 0xca, 0xf8, 0x88
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_256_test_case_0_plaintext[60] = {
|
||||
0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
|
||||
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
|
||||
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
|
||||
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
|
||||
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
|
||||
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
|
||||
0xba, 0x63, 0x7b, 0x39
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_256_test_case_0_aad[20] = {
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xab, 0xad, 0xda, 0xd2
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_256_test_case_0_ciphertext[76] = {
|
||||
0x0b, 0x11, 0xcf, 0xaf, 0x68, 0x4d, 0xae, 0x46,
|
||||
0xc7, 0x90, 0xb8, 0x8e, 0xb7, 0x6a, 0x76, 0x2a,
|
||||
0x94, 0x82, 0xca, 0xab, 0x3e, 0x39, 0xd7, 0x86,
|
||||
0x1b, 0xc7, 0x93, 0xed, 0x75, 0x7f, 0x23, 0x5a,
|
||||
0xda, 0xfd, 0xd3, 0xe2, 0x0e, 0x80, 0x87, 0xa9,
|
||||
0x6d, 0xd7, 0xe2, 0x6a, 0x7d, 0x5f, 0xb4, 0x80,
|
||||
0xef, 0xef, 0xc5, 0x29, 0x12, 0xd1, 0xaa, 0x10,
|
||||
0x09, 0xc9, 0x86, 0xc1,
|
||||
/* the last 16 bytes are the tag */
|
||||
0x45, 0xbc, 0x03, 0xe6, 0xe1, 0xac, 0x0a, 0x9f,
|
||||
0x81, 0xcb, 0x8e, 0x5b, 0x46, 0x65, 0x63, 0x1d,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_256_test_case_0a = {
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_256_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_256_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_256_test_case_0_plaintext, /* plaintext */
|
||||
68, /* octets in ciphertext */
|
||||
srtp_aes_gcm_256_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_256_test_case_0_aad, /* AAD */
|
||||
8, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
const srtp_cipher_test_case_t srtp_aes_gcm_256_test_case_0 = {
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_256_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_256_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_256_test_case_0_plaintext, /* plaintext */
|
||||
76, /* octets in ciphertext */
|
||||
srtp_aes_gcm_256_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_256_test_case_0_aad, /* AAD */
|
||||
16, /* */
|
||||
&srtp_aes_gcm_256_test_case_0a /* pointer to next testcase */
|
||||
};
|
||||
@@ -0,0 +1,53 @@
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2021, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef CHIPHER_TEST_CASES_H
|
||||
#define CHIPHER_TEST_CASES_H
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include "cipher.h"
|
||||
|
||||
extern const srtp_cipher_test_case_t srtp_aes_icm_128_test_case_0;
|
||||
extern const srtp_cipher_test_case_t srtp_aes_icm_192_test_case_0;
|
||||
extern const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_0;
|
||||
|
||||
extern const srtp_cipher_test_case_t srtp_aes_gcm_128_test_case_0;
|
||||
extern const srtp_cipher_test_case_t srtp_aes_gcm_256_test_case_0;
|
||||
|
||||
#endif
|
||||
@@ -97,7 +97,7 @@ static srtp_err_status_t srtp_null_cipher_init(void *cv, const uint8_t *key)
|
||||
{
|
||||
/* srtp_null_cipher_ctx_t *c = (srtp_null_cipher_ctx_t *)cv; */
|
||||
|
||||
debug_print(srtp_mod_cipher, "initializing null cipher", NULL);
|
||||
debug_print0(srtp_mod_cipher, "initializing null cipher");
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user