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4f52dfbb8d
This completely removes client-side support for the SSH 1 protocol, which was already disabled in 12 but is still enabled in 11. For that reason, we will not be able to merge 7.6p1 or newer back to 11.
71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/* $OpenBSD: digest.h,v 1.8 2017/05/08 22:57:38 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_SHA1 1
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#define SSH_DIGEST_SHA256 2
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#define SSH_DIGEST_SHA384 3
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#define SSH_DIGEST_SHA512 4
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#define SSH_DIGEST_MAX 5
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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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