Mercurial > dropbear

comparison src/misc/crypt/crypt_register_cipher.c @ 191:1c15b283127b libtomcrypt-orig

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Import of libtomcrypt 1.02 with manual path rename rearrangement etc
author Matt Johnston <matt@ucc.asn.au>
date Fri, 06 May 2005 13:23:02 +0000
parents
children 39d5d58461d6
comparison
equal deleted inserted replaced
143:5d99163f7e32 191:1c15b283127b
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_register_cipher.c
15 Register a cipher, Tom St Denis
16 */
17
18 /**
19 Register a cipher with the descriptor table
20 @param cipher The cipher you wish to register
21 @return value >= 0 if successfully added (or already present), -1 if unsuccessful
22 */
23 int register_cipher(const struct ltc_cipher_descriptor *cipher)
24 {
25 int x;
26
27 LTC_ARGCHK(cipher != NULL);
28
29 /* is it already registered? */
30 for (x = 0; x < TAB_SIZE; x++) {
31 if (cipher_descriptor[x].name != NULL && cipher_descriptor[x].ID == cipher->ID) {
32 return x;
33 }
34 }
35
36 /* find a blank spot */
37 for (x = 0; x < TAB_SIZE; x++) {
38 if (cipher_descriptor[x].name == NULL) {
39 XMEMCPY(&cipher_descriptor[x], cipher, sizeof(struct ltc_cipher_descriptor));
40 return x;
41 }
42 }
43
44 /* no spot */
45 return -1;
46 }