bbf09ad887
one out of a block cipher. This has 2 advantages: 1) The code is _much_ simpler 2) We aren't committing our security to one algorithm (much as we may think we trust AES). While I'm here, make an explicit reseed do a slow reseed instead of a fast; this is in line with what the original paper suggested.
45 lines
1.9 KiB
C
45 lines
1.9 KiB
C
/*-
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* Copyright (c) 2000 Mark R V Murray
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* 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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* in this position and unchanged.
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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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* $FreeBSD$
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*/
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#define KEYSIZE 32 /* (in bytes) 32 bytes == 256 bits */
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struct yarrowhash { /* Big! Make static! */
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SHA256_CTX sha;
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};
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struct yarrowkey { /* Big! Make static! */
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keyInstance key; /* Key schedule */
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cipherInstance cipher; /* Rijndael internal */
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};
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void yarrow_hash_init(struct yarrowhash *);
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void yarrow_hash_iterate(struct yarrowhash *, void *, size_t);
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void yarrow_hash_finish(struct yarrowhash *, void *);
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void yarrow_encrypt_init(struct yarrowkey *, void *);
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void yarrow_encrypt(struct yarrowkey *context, void *, void *);
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