Annotation of embedaddon/ntp/lib/isc/iterated_hash.c, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (C) 2006, 2008, 2009 Internet Systems Consortium, Inc. ("ISC")
3: *
4: * Permission to use, copy, modify, and/or distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
9: * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
10: * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
11: * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
12: * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
13: * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
14: * PERFORMANCE OF THIS SOFTWARE.
15: */
16:
17: /* $Id: iterated_hash.c,v 1.4.48.2 2009/02/18 23:47:12 tbox Exp $ */
18:
19: #include "config.h"
20:
21: #include <stdio.h>
22:
23: #include <isc/sha1.h>
24: #include <isc/iterated_hash.h>
25:
26: int
27: isc_iterated_hash(unsigned char out[ISC_SHA1_DIGESTLENGTH],
28: unsigned int hashalg, int iterations,
29: const unsigned char *salt, int saltlength,
30: const unsigned char *in, int inlength)
31: {
32: isc_sha1_t ctx;
33: int n = 0;
34:
35: if (hashalg != 1)
36: return (0);
37:
38: do {
39: isc_sha1_init(&ctx);
40: isc_sha1_update(&ctx, in, inlength);
41: isc_sha1_update(&ctx, salt, saltlength);
42: isc_sha1_final(&ctx, out);
43: in = out;
44: inlength = ISC_SHA1_DIGESTLENGTH;
45: } while (n++ < iterations);
46:
47: return (ISC_SHA1_DIGESTLENGTH);
48: }
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