The Tor Browser: netwerk/srtp/src/crypto/include/aes

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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) 2001-2006, 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  */

    46 #ifndef AES_ICM_H

    47 #define AES_ICM_H

    49 #include "aes.h"

    50 #include "cipher.h"

    52 typedef struct {

    53   v128_t   counter;                /* holds the counter value          */

    54   v128_t   offset;                 /* initial offset value             */

    55   v128_t   keystream_buffer;       /* buffers bytes of keystream       */

    56   aes_expanded_key_t expanded_key; /* the cipher key                   */

    57   int      bytes_in_buffer;        /* number of unused bytes in buffer */

    58 } aes_icm_ctx_t;

    61 err_status_t

    62 aes_icm_context_init(aes_icm_ctx_t *c,

    63 		     const unsigned char *key,

    64 		     int key_len);

    66 err_status_t

    67 aes_icm_set_iv(aes_icm_ctx_t *c, void *iv);

    69 err_status_t

    70 aes_icm_encrypt(aes_icm_ctx_t *c,

    71 		unsigned char *buf, unsigned int *bytes_to_encr);

    73 err_status_t

    74 aes_icm_output(aes_icm_ctx_t *c,

    75 	       unsigned char *buf, int bytes_to_output);

    77 err_status_t

    78 aes_icm_dealloc(cipher_t *c);

    80 err_status_t

    81 aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c,

    82 			 unsigned char *buf,

    83 			 unsigned int *enc_len,

    84 			 int forIsmacryp);

    86 err_status_t

    87 aes_icm_alloc_ismacryp(cipher_t **c,

    88 		       int key_len,

    89 		       int forIsmacryp);

    91 #endif /* AES_ICM_H */

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