Mercurial > dropbear

comparison libtomcrypt/src/modes/cbc/cbc_getiv.c @ 302:973fccb59ea4 ucc-axis-hack

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propagate from branch 'au.asn.ucc.matt.dropbear' (head 11034278bd1917bebcbdc69cf53b1891ce9db121) to branch 'au.asn.ucc.matt.dropbear.ucc-axis-hack' (head 10a1f614fec73d0820c3f61160d9db409b9beb46)
author Matt Johnston <matt@ucc.asn.au>
date Sat, 25 Mar 2006 12:59:58 +0000
parents 1b9e69c058d2
children 0cbe8f6dbf9e
comparison
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299:740e782679be 302:973fccb59ea4
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 cbc_getiv.c
15 CBC implementation, get IV, Tom St Denis
16 */
17
18 #ifdef CBC
19
20 /**
21 Get the current initial vector
22 @param IV [out] The destination of the initial vector
23 @param len [in/out] The max size and resulting size of the initial vector
24 @param cbc The CBC state
25 @return CRYPT_OK if successful
26 */
27 int cbc_getiv(unsigned char *IV, unsigned long *len, symmetric_CBC *cbc)
28 {
29 LTC_ARGCHK(IV != NULL);
30 LTC_ARGCHK(len != NULL);
31 LTC_ARGCHK(cbc != NULL);
32 if ((unsigned long)cbc->blocklen > *len) {
33 return CRYPT_BUFFER_OVERFLOW;
34 }
35 XMEMCPY(IV, cbc->IV, cbc->blocklen);
36 *len = cbc->blocklen;
37
38 return CRYPT_OK;
39 }
40
41 #endif
42
43 /* $Source: /cvs/libtom/libtomcrypt/src/modes/cbc/cbc_getiv.c,v $ */
44 /* $Revision: 1.3 $ */
45 /* $Date: 2005/05/05 14:35:59 $ */