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Annotation of src/usr.bin/ssh/hmac.h, Revision 1.6

1.6     ! markus      1: /* $OpenBSD: $ */
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:
        !            24: struct ssh_hmac_ctx;
        !            25: struct ssh_hmac_ctx *ssh_hmac_start(int alg);
        !            26:
        !            27: /* Sets the state of the HMAC or resets the state if key == NULL */
        !            28: int ssh_hmac_init(struct ssh_hmac_ctx *ctx, const void *key, size_t klen)
        !            29:        __attribute__((__bounded__(__buffer__, 2, 3)));
        !            30: int ssh_hmac_update(struct ssh_hmac_ctx *ctx, const void *m, size_t mlen)
        !            31:        __attribute__((__bounded__(__buffer__, 2, 3)));
        !            32: int ssh_hmac_update_buffer(struct ssh_hmac_ctx *ctx, const Buffer *b);
        !            33: int ssh_hmac_final(struct ssh_hmac_ctx *ctx, u_char *d, size_t dlen)
        !            34:        __attribute__((__bounded__(__buffer__, 2, 3)));
        !            35: void ssh_hmac_free(struct ssh_hmac_ctx *ctx);
1.1       markus     36:
1.6     ! markus     37: #endif /* _HMAC_H */