Mercurial > dropbear

comparison libtomcrypt/src/modes/cfb/cfb_setiv.c @ 293:9d110777f345 contrib-blacklist

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
propagate from branch 'au.asn.ucc.matt.dropbear' (head 7ad1775ed65e75dbece27fe6b65bf1a234db386a) to branch 'au.asn.ucc.matt.dropbear.contrib.blacklist' (head 1d86a4f0a401cc68c2670d821a2f6366c37af143)
author Matt Johnston <matt@ucc.asn.au>
date Fri, 10 Mar 2006 06:31:29 +0000
parents 1b9e69c058d2
children 0cbe8f6dbf9e
comparison
equal deleted inserted replaced
247:c07de41b53d7 293:9d110777f345
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 cfb_setiv.c
15 CFB implementation, set IV, Tom St Denis
16 */
17 #ifdef CFB
18
19 /**
20 Set an initial vector
21 @param IV The initial vector
22 @param len The length of the vector (in octets)
23 @param cfb The CFB state
24 @return CRYPT_OK if successful
25 */
26 int cfb_setiv(const unsigned char *IV, unsigned long len, symmetric_CFB *cfb)
27 {
28 int err;
29
30 LTC_ARGCHK(IV != NULL);
31 LTC_ARGCHK(cfb != NULL);
32
33 if ((err = cipher_is_valid(cfb->cipher)) != CRYPT_OK) {
34 return err;
35 }
36
37 if (len != (unsigned long)cfb->blocklen) {
38 return CRYPT_INVALID_ARG;
39 }
40
41 /* force next block */
42 cfb->padlen = 0;
43 cipher_descriptor[cfb->cipher].ecb_encrypt(IV, cfb->IV, &cfb->key);
44
45 return CRYPT_OK;
46 }
47
48 #endif
49
50
51 /* $Source: /cvs/libtom/libtomcrypt/src/modes/cfb/cfb_setiv.c,v $ */
52 /* $Revision: 1.3 $ */
53 /* $Date: 2005/05/05 14:35:59 $ */