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Annotation of src/usr.bin/ssh/hmac.h, Revision 1.9

1.9     ! djm         1: /* $OpenBSD: hmac.h,v 1.8 2014/05/02 03:27:54 djm Exp $ */
1.2       deraadt     2: /*
1.6       markus      3:  * Copyright (c) 2014 Markus Friedl.  All rights reserved.
1.2       deraadt     4:  *
1.6       markus      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.
1.2       deraadt     8:  *
1.6       markus      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.
1.2       deraadt    16:  */
1.1       markus     17:
1.6       markus     18: #ifndef _HMAC_H
                     19: #define _HMAC_H
                     20:
                     21: /* Returns the algorithm's digest length in bytes or 0 for invalid algorithm */
                     22: size_t ssh_hmac_bytes(int alg);
                     23:
1.9     ! djm        24: struct sshbuf;
1.6       markus     25: struct ssh_hmac_ctx;
                     26: struct ssh_hmac_ctx *ssh_hmac_start(int alg);
                     27:
                     28: /* Sets the state of the HMAC or resets the state if key == NULL */
                     29: int ssh_hmac_init(struct ssh_hmac_ctx *ctx, const void *key, size_t klen)
1.8       djm        30:        __attribute__((__bounded__(__buffer__, 2, 3)));
1.6       markus     31: int ssh_hmac_update(struct ssh_hmac_ctx *ctx, const void *m, size_t mlen)
1.8       djm        32:        __attribute__((__bounded__(__buffer__, 2, 3)));
1.9     ! djm        33: int ssh_hmac_update_buffer(struct ssh_hmac_ctx *ctx, const struct sshbuf *b);
1.6       markus     34: int ssh_hmac_final(struct ssh_hmac_ctx *ctx, u_char *d, size_t dlen)
1.8       djm        35:        __attribute__((__bounded__(__buffer__, 2, 3)));
1.6       markus     36: void ssh_hmac_free(struct ssh_hmac_ctx *ctx);
1.1       markus     37:
1.6       markus     38: #endif /* _HMAC_H */