567 lines
18 KiB
C
567 lines
18 KiB
C
/*
|
|
* aes_gcm_ossl.c
|
|
*
|
|
* AES Galois Counter Mode
|
|
*
|
|
* John A. Foley
|
|
* 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 <openssl/evp.h>
|
|
#include "aes_icm_ossl.h"
|
|
#include "aes_gcm_ossl.h"
|
|
#include "alloc.h"
|
|
#include "err.h" /* for srtp_debug */
|
|
#include "crypto_types.h"
|
|
|
|
|
|
srtp_debug_module_t srtp_mod_aes_gcm = {
|
|
0, /* debugging is off by default */
|
|
"aes gcm" /* printable module name */
|
|
};
|
|
|
|
/*
|
|
* The following are the global singleton instances for the
|
|
* 128-bit and 256-bit GCM ciphers.
|
|
*/
|
|
extern const srtp_cipher_type_t srtp_aes_gcm_128_openssl;
|
|
extern const srtp_cipher_type_t srtp_aes_gcm_256_openssl;
|
|
|
|
/*
|
|
* 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_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_openssl_alloc (srtp_cipher_t **c, int key_len, int tlen)
|
|
{
|
|
srtp_aes_gcm_ctx_t *gcm;
|
|
|
|
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);
|
|
}
|
|
|
|
/* allocate memory a cipher of type aes_gcm */
|
|
*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
|
|
if (*c == NULL) {
|
|
return (srtp_err_status_alloc_fail);
|
|
}
|
|
memset(*c, 0x0, sizeof(srtp_cipher_t));
|
|
|
|
gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t));
|
|
if (gcm == NULL) {
|
|
srtp_crypto_free(*c);
|
|
*c = NULL;
|
|
return (srtp_err_status_alloc_fail);
|
|
}
|
|
memset(gcm, 0x0, sizeof(srtp_aes_gcm_ctx_t));
|
|
|
|
gcm->ctx = EVP_CIPHER_CTX_new();
|
|
if (gcm->ctx == NULL) {
|
|
srtp_crypto_free(gcm);
|
|
srtp_crypto_free(*c);
|
|
*c = NULL;
|
|
return srtp_err_status_alloc_fail;
|
|
}
|
|
|
|
/* 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_openssl;
|
|
(*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)->algorithm = SRTP_AES_GCM_256;
|
|
gcm->key_size = SRTP_AES_256_KEY_LEN;
|
|
gcm->tag_len = tlen;
|
|
break;
|
|
}
|
|
|
|
/* set key 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_openssl_dealloc (srtp_cipher_t *c)
|
|
{
|
|
srtp_aes_gcm_ctx_t *ctx;
|
|
|
|
ctx = (srtp_aes_gcm_ctx_t*)c->state;
|
|
if (ctx) {
|
|
EVP_CIPHER_CTX_free(ctx->ctx);
|
|
/* 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_openssl_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_openssl_context_init (void* cv, const uint8_t *key)
|
|
{
|
|
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
|
const EVP_CIPHER *evp;
|
|
|
|
c->dir = srtp_direction_any;
|
|
|
|
debug_print(srtp_mod_aes_gcm, "key: %s", srtp_octet_string_hex_string(key, c->key_size));
|
|
|
|
switch (c->key_size) {
|
|
case SRTP_AES_256_KEY_LEN:
|
|
evp = EVP_aes_256_gcm();
|
|
break;
|
|
case SRTP_AES_128_KEY_LEN:
|
|
evp = EVP_aes_128_gcm();
|
|
break;
|
|
default:
|
|
return (srtp_err_status_bad_param);
|
|
break;
|
|
}
|
|
|
|
if (!EVP_CipherInit_ex(c->ctx, evp, NULL, key, NULL, 0)) {
|
|
return (srtp_err_status_init_fail);
|
|
}
|
|
|
|
return (srtp_err_status_ok);
|
|
}
|
|
|
|
|
|
/*
|
|
* aes_gcm_openssl_set_iv(c, iv) sets the counter value to the exor of iv with
|
|
* the offset
|
|
*/
|
|
static srtp_err_status_t srtp_aes_gcm_openssl_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", v128_hex_string((v128_t*)iv));
|
|
|
|
if (!EVP_CipherInit_ex(c->ctx, NULL, NULL, NULL,
|
|
NULL, (c->dir == srtp_direction_encrypt ? 1 : 0))) {
|
|
return (srtp_err_status_init_fail);
|
|
}
|
|
|
|
/* set IV len and the IV value, the followiong 3 calls are required */
|
|
if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IVLEN, 12, 0)) {
|
|
return (srtp_err_status_init_fail);
|
|
}
|
|
if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IV_FIXED, -1, (void*)iv)) {
|
|
return (srtp_err_status_init_fail);
|
|
}
|
|
if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_IV_GEN, 0, (void*)iv)) {
|
|
return (srtp_err_status_init_fail);
|
|
}
|
|
|
|
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_openssl_set_aad (void *cv, const uint8_t *aad, uint32_t aad_len)
|
|
{
|
|
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
|
|
*/
|
|
|
|
/*
|
|
* 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);
|
|
EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len, &dummy_tag);
|
|
|
|
rv = EVP_Cipher(c->ctx, NULL, aad, aad_len);
|
|
if (rv != aad_len) {
|
|
return (srtp_err_status_algo_fail);
|
|
} else {
|
|
return (srtp_err_status_ok);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function encrypts 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_openssl_encrypt (void *cv, unsigned char *buf, unsigned int *enc_len)
|
|
{
|
|
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
|
if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) {
|
|
return (srtp_err_status_bad_param);
|
|
}
|
|
|
|
/*
|
|
* Encrypt the data
|
|
*/
|
|
EVP_Cipher(c->ctx, buf, buf, *enc_len);
|
|
|
|
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_openssl_get_tag (void *cv, uint8_t *buf, uint32_t *len)
|
|
{
|
|
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
|
/*
|
|
* Calculate the tag
|
|
*/
|
|
EVP_Cipher(c->ctx, NULL, NULL, 0);
|
|
|
|
/*
|
|
* Retreive the tag
|
|
*/
|
|
EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_GET_TAG, c->tag_len, buf);
|
|
|
|
/*
|
|
* Increase encryption length by desired tag size
|
|
*/
|
|
*len = c->tag_len;
|
|
|
|
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_openssl_decrypt (void *cv, unsigned char *buf, unsigned int *enc_len)
|
|
{
|
|
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
|
if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) {
|
|
return (srtp_err_status_bad_param);
|
|
}
|
|
|
|
/*
|
|
* 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));
|
|
EVP_Cipher(c->ctx, buf, buf, *enc_len - c->tag_len);
|
|
|
|
/*
|
|
* Check the tag
|
|
*/
|
|
if (EVP_Cipher(c->ctx, NULL, NULL, 0)) {
|
|
return (srtp_err_status_auth_fail);
|
|
}
|
|
|
|
/*
|
|
* Reduce the buffer size by the tag length since the tag
|
|
* is not part of the original payload
|
|
*/
|
|
*enc_len -= c->tag_len;
|
|
|
|
return (srtp_err_status_ok);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Name of this crypto engine
|
|
*/
|
|
static const char srtp_aes_gcm_128_openssl_description[] = "AES-128 GCM using openssl";
|
|
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.
|
|
*/
|
|
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,
|
|
};
|
|
|
|
static uint8_t srtp_aes_gcm_test_case_0_iv[12] = {
|
|
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
|
0xde, 0xca, 0xf8, 0x88
|
|
};
|
|
|
|
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
|
|
};
|
|
|
|
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
|
|
};
|
|
|
|
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,
|
|
};
|
|
|
|
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 */
|
|
};
|
|
|
|
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,
|
|
|
|
};
|
|
|
|
static uint8_t srtp_aes_gcm_test_case_1_iv[12] = {
|
|
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
|
0xde, 0xca, 0xf8, 0x88
|
|
};
|
|
|
|
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
|
|
};
|
|
|
|
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
|
|
};
|
|
|
|
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,
|
|
};
|
|
|
|
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 = {
|
|
srtp_aes_gcm_openssl_alloc,
|
|
srtp_aes_gcm_openssl_dealloc,
|
|
srtp_aes_gcm_openssl_context_init,
|
|
srtp_aes_gcm_openssl_set_aad,
|
|
srtp_aes_gcm_openssl_encrypt,
|
|
srtp_aes_gcm_openssl_decrypt,
|
|
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
|
|
};
|
|
|
|
/*
|
|
* This is the vector function table for this crypto engine.
|
|
*/
|
|
const srtp_cipher_type_t srtp_aes_gcm_256_openssl = {
|
|
srtp_aes_gcm_openssl_alloc,
|
|
srtp_aes_gcm_openssl_dealloc,
|
|
srtp_aes_gcm_openssl_context_init,
|
|
srtp_aes_gcm_openssl_set_aad,
|
|
srtp_aes_gcm_openssl_encrypt,
|
|
srtp_aes_gcm_openssl_decrypt,
|
|
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
|
|
};
|
|
|