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comparison src/misc/crypt/crypt_find_hash_any.c @ 192:9cc34777b479 libtomcrypt

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propagate from branch 'au.asn.ucc.matt.ltc-orig' (head 9ba8f01f44320e9cb9f19881105ae84f84a43ea9) to branch 'au.asn.ucc.matt.dropbear.ltc' (head dbf51c569bc34956ad948e4cc87a0eeb2170b768)
author Matt Johnston <matt@ucc.asn.au>
date Sun, 08 May 2005 06:36:47 +0000
parents 1c15b283127b
children 39d5d58461d6
comparison
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164:cd1143579f00 192:9cc34777b479
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
2 *
3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner.
5 *
6 * The library is free for all purposes without any express
7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtomcrypt.org
10 */
11 #include "tomcrypt.h"
12
13 /**
14 @file crypt_find_hash_any.c
15 Find a hash, Tom St Denis
16 */
17
18 /**
19 Find a hash flexibly. First by name then if not present by digest size
20 @param name The name of the hash desired
21 @param digestlen The minimum length of the digest size (octets)
22 @return >= 0 if found, -1 if not present
23 */int find_hash_any(const char *name, int digestlen)
24 {
25 int x, y, z;
26 LTC_ARGCHK(name != NULL);
27
28 x = find_hash(name);
29 if (x != -1) return x;
30
31 y = MAXBLOCKSIZE+1;
32 z = -1;
33 for (x = 0; x < TAB_SIZE; x++) {
34 if (hash_descriptor[x].name == NULL) {
35 continue;
36 }
37 if ((int)hash_descriptor[x].hashsize >= digestlen && (int)hash_descriptor[x].hashsize < y) {
38 z = x;
39 y = hash_descriptor[x].hashsize;
40 }
41 }
42 return z;
43 }