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comparison: netwerk/srtp/src/crypto/include/key.h
netwerk/srtp/src/crypto/include/key.h
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| -1:000000000000 | 0:9e65c4119cdb |
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| 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 */ | |
| 44 | |
| 45 #ifndef KEY_H | |
| 46 #define KEY_H | |
| 47 | |
| 48 #include "rdbx.h" /* for xtd_seq_num_t */ | |
| 49 #include "err.h" | |
| 50 | |
| 51 typedef struct key_limit_ctx_t *key_limit_t; | |
| 52 | |
| 53 typedef enum { | |
| 54 key_event_normal, | |
| 55 key_event_soft_limit, | |
| 56 key_event_hard_limit | |
| 57 } key_event_t; | |
| 58 | |
| 59 err_status_t | |
| 60 key_limit_set(key_limit_t key, const xtd_seq_num_t s); | |
| 61 | |
| 62 err_status_t | |
| 63 key_limit_clone(key_limit_t original, key_limit_t *new_key); | |
| 64 | |
| 65 err_status_t | |
| 66 key_limit_check(const key_limit_t key); | |
| 67 | |
| 68 key_event_t | |
| 69 key_limit_update(key_limit_t key); | |
| 70 | |
| 71 typedef enum { | |
| 72 key_state_normal, | |
| 73 key_state_past_soft_limit, | |
| 74 key_state_expired | |
| 75 } key_state_t; | |
| 76 | |
| 77 typedef struct key_limit_ctx_t { | |
| 78 xtd_seq_num_t num_left; | |
| 79 key_state_t state; | |
| 80 } key_limit_ctx_t; | |
| 81 | |
| 82 #endif /* KEY_H */ |
