| /* |
| * aes_gcm_ossl.c |
| * |
| * AES Galois Counter Mode |
| * |
| * John A. Foley |
| * Cisco Systems, Inc. |
| * |
| */ |
| |
| /* |
| * |
| * Copyright (c) 2013, 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 "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_128_GCM_KEYSIZE_WSALT && |
| key_len != SRTP_AES_256_GCM_KEYSIZE_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)); |
| |
| /* set pointers */ |
| (*c)->state = gcm; |
| |
| /* setup cipher attributes */ |
| switch (key_len) { |
| case SRTP_AES_128_GCM_KEYSIZE_WSALT: |
| (*c)->type = &srtp_aes_gcm_128_openssl; |
| (*c)->algorithm = SRTP_AES_128_GCM; |
| gcm->key_size = SRTP_AES_128_KEYSIZE; |
| gcm->tag_len = tlen; |
| break; |
| case SRTP_AES_256_GCM_KEYSIZE_WSALT: |
| (*c)->type = &srtp_aes_gcm_256_openssl; |
| (*c)->algorithm = SRTP_AES_256_GCM; |
| gcm->key_size = SRTP_AES_256_KEYSIZE; |
| gcm->tag_len = tlen; |
| break; |
| } |
| |
| /* set key size */ |
| (*c)->key_len = key_len; |
| EVP_CIPHER_CTX_init(&gcm->ctx); |
| |
| 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_cleanup(&ctx->ctx); |
| /* zeroize the key material */ |
| octet_string_set_to_zero((uint8_t*)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 (srtp_aes_gcm_ctx_t *c, const uint8_t *key) |
| { |
| c->dir = direction_any; |
| |
| /* copy key to be used later when CiscoSSL crypto context is created */ |
| v128_copy_octet_string((v128_t*)&c->key, key); |
| |
| if (c->key_size == SRTP_AES_256_KEYSIZE) { |
| debug_print(srtp_mod_aes_gcm, "Copying last 16 bytes of key: %s", |
| v128_hex_string((v128_t*)(key + SRTP_AES_128_KEYSIZE))); |
| v128_copy_octet_string(((v128_t*)(&c->key.v8)) + 1, |
| key + SRTP_AES_128_KEYSIZE); |
| } |
| |
| debug_print(srtp_mod_aes_gcm, "key: %s", v128_hex_string((v128_t*)&c->key)); |
| |
| EVP_CIPHER_CTX_cleanup(&c->ctx); |
| |
| 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 (srtp_aes_gcm_ctx_t *c, uint8_t *iv, int direction) |
| { |
| const EVP_CIPHER *evp; |
| |
| if (direction != direction_encrypt && direction != 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)); |
| |
| switch (c->key_size) { |
| case SRTP_AES_256_KEYSIZE: |
| evp = EVP_aes_256_gcm(); |
| break; |
| case SRTP_AES_128_KEYSIZE: |
| evp = EVP_aes_128_gcm(); |
| break; |
| default: |
| return (srtp_err_status_bad_param); |
| break; |
| } |
| |
| if (!EVP_CipherInit_ex(&c->ctx, evp, NULL, (const unsigned char*)&c->key.v8, |
| NULL, (c->dir == 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 (srtp_aes_gcm_ctx_t *c, const uint8_t *aad, uint32_t aad_len) |
| { |
| 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 (srtp_aes_gcm_ctx_t *c, unsigned char *buf, unsigned int *enc_len) |
| { |
| if (c->dir != direction_encrypt && c->dir != 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 (srtp_aes_gcm_ctx_t *c, uint8_t *buf, uint32_t *len) |
| { |
| /* |
| * 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 (srtp_aes_gcm_ctx_t *c, unsigned char *buf, unsigned int *enc_len) |
| { |
| if (c->dir != direction_encrypt && c->dir != 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_128_GCM_KEYSIZE_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_128_GCM_KEYSIZE_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_128_GCM_KEYSIZE_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_256_GCM_KEYSIZE_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_256_GCM_KEYSIZE_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_256_GCM_KEYSIZE_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 = { |
| (cipher_alloc_func_t)srtp_aes_gcm_openssl_alloc, |
| (cipher_dealloc_func_t)srtp_aes_gcm_openssl_dealloc, |
| (cipher_init_func_t)srtp_aes_gcm_openssl_context_init, |
| (cipher_set_aad_func_t)srtp_aes_gcm_openssl_set_aad, |
| (cipher_encrypt_func_t)srtp_aes_gcm_openssl_encrypt, |
| (cipher_decrypt_func_t)srtp_aes_gcm_openssl_decrypt, |
| (cipher_set_iv_func_t)srtp_aes_gcm_openssl_set_iv, |
| (cipher_get_tag_func_t)srtp_aes_gcm_openssl_get_tag, |
| (const char*)srtp_aes_gcm_128_openssl_description, |
| (const srtp_cipher_test_case_t*)&srtp_aes_gcm_test_case_0, |
| (srtp_debug_module_t*)&srtp_mod_aes_gcm, |
| (srtp_cipher_type_id_t)SRTP_AES_128_GCM |
| }; |
| |
| /* |
| * This is the vector function table for this crypto engine. |
| */ |
| const srtp_cipher_type_t srtp_aes_gcm_256_openssl = { |
| (cipher_alloc_func_t)srtp_aes_gcm_openssl_alloc, |
| (cipher_dealloc_func_t)srtp_aes_gcm_openssl_dealloc, |
| (cipher_init_func_t)srtp_aes_gcm_openssl_context_init, |
| (cipher_set_aad_func_t)srtp_aes_gcm_openssl_set_aad, |
| (cipher_encrypt_func_t)srtp_aes_gcm_openssl_encrypt, |
| (cipher_decrypt_func_t)srtp_aes_gcm_openssl_decrypt, |
| (cipher_set_iv_func_t)srtp_aes_gcm_openssl_set_iv, |
| (cipher_get_tag_func_t)srtp_aes_gcm_openssl_get_tag, |
| (const char*)srtp_aes_gcm_256_openssl_description, |
| (const srtp_cipher_test_case_t*)&srtp_aes_gcm_test_case_1, |
| (srtp_debug_module_t*)&srtp_mod_aes_gcm, |
| (srtp_cipher_type_id_t)SRTP_AES_256_GCM |
| }; |
| |