1 /* 2 * aes_icm.h 3 * 4 * Header for AES Integer Counter Mode. 5 * 6 * David A. McGrew 7 * Cisco Systems, Inc. 8 * 9 */ 10 /* 11 * 12 * Copyright (c) 2001-2017, Cisco Systems, Inc. 13 * All rights reserved. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 19 * Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 22 * Redistributions in binary form must reproduce the above 23 * copyright notice, this list of conditions and the following 24 * disclaimer in the documentation and/or other materials provided 25 * with the distribution. 26 * 27 * Neither the name of the Cisco Systems, Inc. nor the names of its 28 * contributors may be used to endorse or promote products derived 29 * from this software without specific prior written permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 34 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 35 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 36 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 37 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 38 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 42 * OF THE POSSIBILITY OF SUCH DAMAGE. 43 * 44 */ 45 46 #ifndef AES_ICM_H 47 #define AES_ICM_H 48 49 #include "cipher.h" 50 #include "datatypes.h" 51 52 #ifdef OPENSSL 53 54 #include <openssl/evp.h> 55 #include <openssl/aes.h> 56 57 typedef struct { 58 v128_t counter; /* holds the counter value */ 59 v128_t offset; /* initial offset value */ 60 int key_size; 61 EVP_CIPHER_CTX *ctx; 62 } srtp_aes_icm_ctx_t; 63 64 #endif /* OPENSSL */ 65 66 #ifdef NSS 67 68 #include <nss.h> 69 #include <pk11pub.h> 70 71 typedef struct { 72 v128_t counter; 73 v128_t offset; 74 int key_size; 75 uint8_t iv[16]; 76 NSSInitContext *nss; 77 PK11SymKey *key; 78 PK11Context *ctx; 79 } srtp_aes_icm_ctx_t; 80 81 #endif /* NSS */ 82 83 #endif /* AES_ICM_H */ 84