tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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aes_gcm.h (2816B)

      1 /*
      2 * aes_gcm.h
      3 *
      4 * Header for AES Galois Counter Mode.
      5 *
      6 * John A. Foley
      7 * Cisco Systems, Inc.
      8 *
      9 */
     10 /*
     11 *
     12 * Copyright (c) 2013-2017, 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_GCM_H
     47 #define AES_GCM_H
     48 
     49 #include "cipher.h"
     50 #include "srtp.h"
     51 #include "datatypes.h"
     52 
     53 #ifdef OPENSSL
     54 
     55 #include <openssl/evp.h>
     56 #include <openssl/aes.h>
     57 
     58 typedef struct {
     59    int key_size;
     60    int tag_len;
     61    EVP_CIPHER_CTX *ctx;
     62    srtp_cipher_direction_t dir;
     63 } srtp_aes_gcm_ctx_t;
     64 
     65 #endif /* OPENSSL */
     66 
     67 #ifdef MBEDTLS
     68 #define MAX_AD_SIZE 2048
     69 #include <mbedtls/aes.h>
     70 #include <mbedtls/gcm.h>
     71 
     72 typedef struct {
     73    int key_size;
     74    int tag_len;
     75    int aad_size;
     76    int iv_len;
     77    uint8_t iv[12];
     78    uint8_t tag[16];
     79    uint8_t aad[MAX_AD_SIZE];
     80    mbedtls_gcm_context *ctx;
     81    srtp_cipher_direction_t dir;
     82 } srtp_aes_gcm_ctx_t;
     83 
     84 #endif /* MBEDTLS */
     85 
     86 #ifdef NSS
     87 
     88 #define NSS_PKCS11_2_0_COMPAT 1
     89 
     90 #include <nss.h>
     91 #include <pk11pub.h>
     92 
     93 #define MAX_AD_SIZE 2048
     94 
     95 typedef struct {
     96    int key_size;
     97    int tag_size;
     98    srtp_cipher_direction_t dir;
     99    NSSInitContext *nss;
    100    PK11SymKey *key;
    101    uint8_t iv[12];
    102    uint8_t aad[MAX_AD_SIZE];
    103    int aad_size;
    104    CK_GCM_PARAMS params;
    105    uint8_t tag[16];
    106 } srtp_aes_gcm_ctx_t;
    107 
    108 #endif /* NSS */
    109 
    110 #endif /* AES_GCM_H */