The Tor Browser: netwerk/srtp/src/crypto/include/hmac.h@6474c204b198

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

     1 /*

     2  * hmac.h

     3  *

     4  * interface to hmac auth_type_t

     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 HMAC_H

    47 #define HMAC_H

    49 #include "auth.h"

    50 #include "sha1.h"

    52 typedef struct {

    53   uint8_t    opad[64];

    54   sha1_ctx_t ctx;

    55   sha1_ctx_t init_ctx;

    56 } hmac_ctx_t;

    58 err_status_t

    59 hmac_alloc(auth_t **a, int key_len, int out_len);

    61 err_status_t

    62 hmac_dealloc(auth_t *a);

    64 err_status_t

    65 hmac_init(hmac_ctx_t *state, const uint8_t *key, int key_len);

    67 err_status_t

    68 hmac_start(hmac_ctx_t *state);

    70 err_status_t

    71 hmac_update(hmac_ctx_t *state, const uint8_t *message, int msg_octets);

    73 err_status_t

    74 hmac_compute(hmac_ctx_t *state, const void *message,

    75 	     int msg_octets, int tag_len, uint8_t *result);

    78 #endif /* HMAC_H */

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