/* 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, tomstdenis@gmail.com, http://libtomcrypt.com
*/
#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: 1.5 $ */
/* $Date: 2006/03/31 14:15:35 $ */