mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-11-24 02:02:10 +08:00
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 $ */
|
|
/*
|
|
* Copyright (c) 2013 Damien Miller <djm@mindrot.org>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _DIGEST_H
|
|
#define _DIGEST_H
|
|
|
|
/* Maximum digest output length */
|
|
#define SSH_DIGEST_MAX_LENGTH 64
|
|
|
|
/* Digest algorithms */
|
|
#define SSH_DIGEST_MD5 0
|
|
#define SSH_DIGEST_SHA1 1
|
|
#define SSH_DIGEST_SHA256 2
|
|
#define SSH_DIGEST_SHA384 3
|
|
#define SSH_DIGEST_SHA512 4
|
|
#define SSH_DIGEST_MAX 5
|
|
|
|
struct sshbuf;
|
|
struct ssh_digest_ctx;
|
|
|
|
/* Looks up a digest algorithm by name */
|
|
int ssh_digest_alg_by_name(const char *name);
|
|
|
|
/* Returns the algorithm name for a digest identifier */
|
|
const char *ssh_digest_alg_name(int alg);
|
|
|
|
/* Returns the algorithm's digest length in bytes or 0 for invalid algorithm */
|
|
size_t ssh_digest_bytes(int alg);
|
|
|
|
/* Returns the block size of the digest, e.g. for implementing HMAC */
|
|
size_t ssh_digest_blocksize(struct ssh_digest_ctx *ctx);
|
|
|
|
/* Copies internal state of digest of 'from' to 'to' */
|
|
int ssh_digest_copy_state(struct ssh_digest_ctx *from,
|
|
struct ssh_digest_ctx *to);
|
|
|
|
/* One-shot API */
|
|
int ssh_digest_memory(int alg, const void *m, size_t mlen,
|
|
u_char *d, size_t dlen)
|
|
__attribute__((__bounded__(__buffer__, 2, 3)))
|
|
__attribute__((__bounded__(__buffer__, 4, 5)));
|
|
int ssh_digest_buffer(int alg, const struct sshbuf *b, u_char *d, size_t dlen)
|
|
__attribute__((__bounded__(__buffer__, 3, 4)));
|
|
|
|
/* Update API */
|
|
struct ssh_digest_ctx *ssh_digest_start(int alg);
|
|
int ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen)
|
|
__attribute__((__bounded__(__buffer__, 2, 3)));
|
|
int ssh_digest_update_buffer(struct ssh_digest_ctx *ctx,
|
|
const struct sshbuf *b);
|
|
int ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen)
|
|
__attribute__((__bounded__(__buffer__, 2, 3)));
|
|
void ssh_digest_free(struct ssh_digest_ctx *ctx);
|
|
|
|
#endif /* _DIGEST_H */
|
|
|