The Tor Browser: netwerk/srtp/src/crypto/include/key.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  * key.h

     3  *

     4  * key usage limits enforcement

     5  *

     6  * David A. Mcgrew

     7  * Cisco Systems, Inc.

     8  */

     9 /*

    10  *

    11  * Copyright (c) 2001-2006 Cisco Systems, Inc.

    12  * All rights reserved.

    13  *

    14  * Redistribution and use in source and binary forms, with or without

    15  * modification, are permitted provided that the following conditions

    16  * are met:

    17  *

    18  *   Redistributions of source code must retain the above copyright

    19  *   notice, this list of conditions and the following disclaimer.

    20  *

    21  *   Redistributions in binary form must reproduce the above

    22  *   copyright notice, this list of conditions and the following

    23  *   disclaimer in the documentation and/or other materials provided

    24  *   with the distribution.

    25  *

    26  *   Neither the name of the Cisco Systems, Inc. nor the names of its

    27  *   contributors may be used to endorse or promote products derived

    28  *   from this software without specific prior written permission.

    29  *

    30  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    31  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    32  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

    33  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

    34  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

    35  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    36  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

    37  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

    39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    40  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

    41  * OF THE POSSIBILITY OF SUCH DAMAGE.

    42  *

    43  */

    45 #ifndef KEY_H

    46 #define KEY_H

    48 #include "rdbx.h"   /* for xtd_seq_num_t */

    49 #include "err.h"

    51 typedef struct key_limit_ctx_t *key_limit_t;

    53 typedef enum {

    54    key_event_normal,

    55    key_event_soft_limit,

    56    key_event_hard_limit

    57 } key_event_t;

    59 err_status_t

    60 key_limit_set(key_limit_t key, const xtd_seq_num_t s);

    62 err_status_t

    63 key_limit_clone(key_limit_t original, key_limit_t *new_key);

    65 err_status_t

    66 key_limit_check(const key_limit_t key);

    68 key_event_t

    69 key_limit_update(key_limit_t key);

    71 typedef enum {

    72    key_state_normal,

    73    key_state_past_soft_limit,

    74    key_state_expired

    75 } key_state_t;

    77 typedef struct key_limit_ctx_t {

    78   xtd_seq_num_t num_left;

    79   key_state_t   state;

    80 } key_limit_ctx_t;

    82 #endif /* KEY_H */

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