59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/* $OpenBSD: prf.h,v 1.10 2004/04/15 18:39:26 deraadt Exp $ */
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/* $EOM: prf.h,v 1.1 1998/07/11 20:06:22 provos Exp $ */
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/*
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* Copyright (c) 1998 Niels Provos. All rights reserved.
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* Copyright (c) 2001 Niklas Hallqvist. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This code was written under funding by Ericsson Radio Systems.
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*/
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#ifndef _PRF_H_
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#define _PRF_H_
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/* Enumeration of possible PRF - Pseudo-Random Functions. */
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enum prfs {
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PRF_HMAC = 0 /* No PRFs in drafts, this is the default */
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};
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struct prf {
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enum prfs type; /* Type of PRF */
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void *prfctx; /* Context for PRF */
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u_int8_t blocksize; /* The blocksize of PRF */
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void (*Init) (void *);
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void (*Update) (void *, unsigned char *, unsigned int);
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void (*Final) (unsigned char *, void *);
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};
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struct prf_hash_ctx {
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struct hash *hash; /* Hash type to use */
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void *ctx, *ctx2; /* Contexts we need for later */
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};
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struct prf *prf_alloc(enum prfs, int, unsigned char *, unsigned int);
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void prf_free(struct prf *);
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#endif /* _PRF_H_ */
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