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71 lines
2.5 KiB
71 lines
2.5 KiB
/* $OpenBSD: digest.h,v 1.7 2014/12/21 22:27:56 djm Exp $ */ |
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/* |
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* Copyright (c) 2013 Damien Miller <djm@mindrot.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#ifndef _DIGEST_H |
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#define _DIGEST_H |
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/* Maximum digest output length */ |
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#define SSH_DIGEST_MAX_LENGTH 64 |
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/* Digest algorithms */ |
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#define SSH_DIGEST_MD5 0 |
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#define SSH_DIGEST_RIPEMD160 1 |
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#define SSH_DIGEST_SHA1 2 |
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#define SSH_DIGEST_SHA256 3 |
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#define SSH_DIGEST_SHA384 4 |
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#define SSH_DIGEST_SHA512 5 |
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#define SSH_DIGEST_MAX 6 |
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struct sshbuf; |
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struct ssh_digest_ctx; |
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/* Looks up a digest algorithm by name */ |
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int ssh_digest_alg_by_name(const char *name); |
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/* Returns the algorithm name for a digest identifier */ |
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const char *ssh_digest_alg_name(int alg); |
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/* Returns the algorithm's digest length in bytes or 0 for invalid algorithm */ |
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size_t ssh_digest_bytes(int alg); |
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/* Returns the block size of the digest, e.g. for implementing HMAC */ |
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size_t ssh_digest_blocksize(struct ssh_digest_ctx *ctx); |
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/* Copies internal state of digest of 'from' to 'to' */ |
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int ssh_digest_copy_state(struct ssh_digest_ctx *from, |
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struct ssh_digest_ctx *to); |
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/* One-shot API */ |
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int ssh_digest_memory(int alg, const void *m, size_t mlen, |
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u_char *d, size_t dlen) |
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__attribute__((__bounded__(__buffer__, 2, 3))) |
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__attribute__((__bounded__(__buffer__, 4, 5))); |
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int ssh_digest_buffer(int alg, const struct sshbuf *b, u_char *d, size_t dlen) |
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__attribute__((__bounded__(__buffer__, 3, 4))); |
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/* Update API */ |
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struct ssh_digest_ctx *ssh_digest_start(int alg); |
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int ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen) |
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__attribute__((__bounded__(__buffer__, 2, 3))); |
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int ssh_digest_update_buffer(struct ssh_digest_ctx *ctx, |
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const struct sshbuf *b); |
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int ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen) |
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__attribute__((__bounded__(__buffer__, 2, 3))); |
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void ssh_digest_free(struct ssh_digest_ctx *ctx); |
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#endif /* _DIGEST_H */ |
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