2 * Copyright (c) 2000 Mark R V Murray
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/param.h>
30 #include <sys/systm.h>
32 #include <crypto/rijndael/rijndael.h>
33 #include <crypto/sha2/sha2.h>
35 #include <dev/random/hash.h>
37 /* initialise the hash */
39 yarrow_hash_init(struct yarrowhash *context)
41 SHA256_Init(&context->sha);
44 /* iterate the hash */
46 yarrow_hash_iterate(struct yarrowhash *context, void *data, size_t size)
48 SHA256_Update(&context->sha, data, size);
51 /* Conclude by returning the hash in the supplied /buf/ which must be
52 * KEYSIZE bytes long. Trailing data (less than KEYSIZE bytes) are
56 yarrow_hash_finish(struct yarrowhash *context, void *buf)
58 SHA256_Final(buf, &context->sha);
61 /* Initialise the encryption routine by setting up the key schedule
62 * from the supplied /key/ which must be KEYSIZE bytes of binary
66 yarrow_encrypt_init(struct yarrowkey *context, void *data)
68 rijndael_cipherInit(&context->cipher, MODE_CBC, NULL);
69 rijndael_makeKey(&context->key, DIR_ENCRYPT, KEYSIZE*8, data);
72 /* Encrypt the supplied data using the key schedule preset in the context.
73 * KEYSIZE bytes are encrypted from /d_in/ to /d_out/.
76 yarrow_encrypt(struct yarrowkey *context, void *d_in, void *d_out)
78 rijndael_blockEncrypt(&context->cipher, &context->key, d_in,