Damien Miller | b3051d0 | 2014-01-10 10:58:53 +1100 | [diff] [blame] | 1 | /* $OpenBSD: digest.h,v 1.1 2014/01/09 23:20:00 djm Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2013 Damien Miller <djm@mindrot.org> |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef _DIGEST_H |
| 19 | #define _DIGEST_H |
| 20 | |
| 21 | /* Maximum digest output length */ |
| 22 | #define SSH_DIGEST_MAX_LENGTH 64 |
| 23 | |
| 24 | /* Digest algorithms */ |
| 25 | #define SSH_DIGEST_MD5 0 |
| 26 | #define SSH_DIGEST_RIPEMD160 1 |
| 27 | #define SSH_DIGEST_SHA1 2 |
| 28 | #define SSH_DIGEST_SHA256 3 |
| 29 | #define SSH_DIGEST_SHA384 4 |
| 30 | #define SSH_DIGEST_SHA512 5 |
| 31 | #define SSH_DIGEST_MAX 6 |
| 32 | |
| 33 | /* Returns the algorithm's digest length in bytes or 0 for invalid algorithm */ |
| 34 | size_t ssh_digest_bytes(int alg); |
| 35 | |
| 36 | /* One-shot API */ |
| 37 | int ssh_digest_memory(int alg, const void *m, size_t mlen, |
| 38 | u_char *d, size_t dlen) |
| 39 | __attribute__((__bounded__(__buffer__, 2, 3))) |
| 40 | __attribute__((__bounded__(__buffer__, 4, 5))); |
| 41 | int ssh_digest_buffer(int alg, const Buffer *b, u_char *d, size_t dlen) |
| 42 | __attribute__((__bounded__(__buffer__, 3, 4))); |
| 43 | |
| 44 | /* Update API */ |
| 45 | struct ssh_digest_ctx; |
| 46 | struct ssh_digest_ctx *ssh_digest_start(int alg); |
| 47 | int ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen) |
| 48 | __attribute__((__bounded__(__buffer__, 2, 3))); |
| 49 | int ssh_digest_update_buffer(struct ssh_digest_ctx *ctx, const Buffer *b); |
| 50 | int ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen) |
| 51 | __attribute__((__bounded__(__buffer__, 2, 3))); |
| 52 | void ssh_digest_free(struct ssh_digest_ctx *ctx); |
| 53 | |
| 54 | #endif /* _DIGEST_H */ |
| 55 | |