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comparison crypt_register_cipher.c @ 3:7faae8f46238 libtomcrypt-orig

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Branch renaming
author Matt Johnston <matt@ucc.asn.au>
date Mon, 31 May 2004 18:25:41 +0000
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children 5d99163f7e32
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-1:000000000000 3:7faae8f46238
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 "mycrypt.h"
12
13 int register_cipher(const struct _cipher_descriptor *cipher)
14 {
15 int x;
16
17 _ARGCHK(cipher != NULL);
18
19 /* is it already registered? */
20 for (x = 0; x < TAB_SIZE; x++) {
21 if (cipher_descriptor[x].name != NULL && cipher_descriptor[x].ID == cipher->ID) {
22 return x;
23 }
24 }
25
26 /* find a blank spot */
27 for (x = 0; x < TAB_SIZE; x++) {
28 if (cipher_descriptor[x].name == NULL) {
29 memcpy(&cipher_descriptor[x], cipher, sizeof(struct _cipher_descriptor));
30 return x;
31 }
32 }
33
34 /* no spot */
35 return -1;
36 }