Mercurial > dropbear
diff libtomcrypt/src/misc/crypt/crypt_find_hash_any.c @ 285:1b9e69c058d2
propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
to branch 'au.asn.ucc.matt.dropbear' (head fdf4a7a3b97ae5046139915de7e40399cceb2c01)
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 08 Mar 2006 13:23:58 +0000 |
parents | |
children | 0cbe8f6dbf9e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtomcrypt/src/misc/crypt/crypt_find_hash_any.c Wed Mar 08 13:23:58 2006 +0000 @@ -0,0 +1,49 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, [email protected], http://libtomcrypt.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_hash_any.c + Find a hash, Tom St Denis +*/ + +/** + Find a hash flexibly. First by name then if not present by digest size + @param name The name of the hash desired + @param digestlen The minimum length of the digest size (octets) + @return >= 0 if found, -1 if not present +*/int find_hash_any(const char *name, int digestlen) +{ + int x, y, z; + LTC_ARGCHK(name != NULL); + + x = find_hash(name); + if (x != -1) return x; + + LTC_MUTEX_LOCK(<c_hash_mutex); + y = MAXBLOCKSIZE+1; + z = -1; + for (x = 0; x < TAB_SIZE; x++) { + if (hash_descriptor[x].name == NULL) { + continue; + } + if ((int)hash_descriptor[x].hashsize >= digestlen && (int)hash_descriptor[x].hashsize < y) { + z = x; + y = hash_descriptor[x].hashsize; + } + } + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return z; +} + +/* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_find_hash_any.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2005/06/19 18:00:28 $ */