tomcrypt/crypt_find_cipher_any.c
2010-06-16 12:38:11 +02:00

33 lines
826 B
C

/* 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@iahu.ca, http://libtomcrypt.org
*/
#include "mycrypt.h"
/* idea from Wayne Scott */
int find_cipher_any(const char *name, int blocklen, int keylen)
{
int x;
_ARGCHK(name != NULL);
x = find_cipher(name);
if (x != -1) return x;
for (x = 0; x < TAB_SIZE; x++) {
if (cipher_descriptor[x].name == NULL) {
continue;
}
if (blocklen <= (int)cipher_descriptor[x].block_length && keylen <= (int)cipher_descriptor[x].max_key_length) {
return x;
}
}
return -1;
}