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comparison src/modes/ofb/ofb_getiv.c @ 280:59400faa4b44 libtomcrypt-orig libtomcrypt-1.05

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Re-import libtomcrypt 1.05 for cleaner propagating. From crypt-1.05.tar.bz2, SHA1 of 88250202bb51570dc64f7e8f1c943cda9479258f
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 Mar 2006 12:58:00 +0000
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children d5faf4814ddb
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-1:000000000000 280:59400faa4b44
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 ofb_getiv.c
15 OFB implementation, get IV, Tom St Denis
16 */
17
18 #ifdef OFB
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 ofb The OFB state
25 @return CRYPT_OK if successful
26 */
27 int ofb_getiv(unsigned char *IV, unsigned long *len, symmetric_OFB *ofb)
28 {
29 LTC_ARGCHK(IV != NULL);
30 LTC_ARGCHK(len != NULL);
31 LTC_ARGCHK(ofb != NULL);
32 if ((unsigned long)ofb->blocklen > *len) {
33 return CRYPT_BUFFER_OVERFLOW;
34 }
35 XMEMCPY(IV, ofb->IV, ofb->blocklen);
36 *len = ofb->blocklen;
37
38 return CRYPT_OK;
39 }
40
41 #endif
42
43 /* $Source: /cvs/libtom/libtomcrypt/src/modes/ofb/ofb_getiv.c,v $ */
44 /* $Revision: 1.3 $ */
45 /* $Date: 2005/05/05 14:35:59 $ */