diff options
Diffstat (limited to 'third_party/srtp/crypto/include/aes_icm_ossl.h')
-rw-r--r-- | third_party/srtp/crypto/include/aes_icm_ossl.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/third_party/srtp/crypto/include/aes_icm_ossl.h b/third_party/srtp/crypto/include/aes_icm_ossl.h new file mode 100644 index 00000000..b4ec40a4 --- /dev/null +++ b/third_party/srtp/crypto/include/aes_icm_ossl.h @@ -0,0 +1,85 @@ +/* + * aes_icm.h + * + * Header for AES Integer Counter Mode. + * + * David A. McGrew + * Cisco Systems, Inc. + * + */ +/* + * + * Copyright (c) 2001-2005,2012, 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 AES_ICM_H +#define AES_ICM_H + +#include "cipher.h" +#include <openssl/evp.h> +#include <openssl/aes.h> + +#ifdef OPENSSL_IS_BORINGSSL +// BoringSSL doesn't support AES-192, cipher will be disabled +#define SRTP_NO_AES192 +#endif + +#define SALT_SIZE 14 +#define AES_128_KEYSIZE AES_BLOCK_SIZE +#ifndef SRTP_NO_AES192 +#define AES_192_KEYSIZE AES_BLOCK_SIZE + AES_BLOCK_SIZE / 2 +#endif +#define AES_256_KEYSIZE AES_BLOCK_SIZE * 2 +#define AES_128_KEYSIZE_WSALT AES_128_KEYSIZE + SALT_SIZE +#ifndef SRTP_NO_AES192 +#define AES_192_KEYSIZE_WSALT AES_192_KEYSIZE + SALT_SIZE +#endif +#define AES_256_KEYSIZE_WSALT AES_256_KEYSIZE + SALT_SIZE + +typedef struct { + v128_t counter; /* holds the counter value */ + v128_t offset; /* initial offset value */ + v256_t key; + int key_size; + EVP_CIPHER_CTX ctx; +} aes_icm_ctx_t; + +err_status_t aes_icm_openssl_set_iv(aes_icm_ctx_t *c, void *iv, int dir); +err_status_t aes_icm_openssl_context_init(aes_icm_ctx_t *c, const uint8_t *key, int len); +err_status_t aes_icm_output(aes_icm_ctx_t *c, uint8_t *buffer, int num_octets_to_output); +uint16_t aes_icm_bytes_encrypted(aes_icm_ctx_t *c); + + +#endif /* AES_ICM_H */ + |