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comparison libtomcrypt/src/modes/cfb/cfb_setiv.c @ 1511:5916af64acd4 fuzz

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merge from main
author Matt Johnston <matt@ucc.asn.au>
date Sat, 17 Feb 2018 19:29:51 +0800
parents 6dba84798cd5
children
comparison
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1457:32f990cc96b1 1511:5916af64acd4
3 * LibTomCrypt is a library that provides various cryptographic 3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner. 4 * algorithms in a highly modular and flexible manner.
5 * 5 *
6 * The library is free for all purposes without any express 6 * The library is free for all purposes without any express
7 * guarantee it works. 7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtom.org
10 */ 8 */
11 #include "tomcrypt.h" 9 #include "tomcrypt.h"
12 10
13 /** 11 /**
14 @file cfb_setiv.c 12 @file cfb_setiv.c
15 CFB implementation, set IV, Tom St Denis 13 CFB implementation, set IV, Tom St Denis
16 */ 14 */
17 15
18 #ifdef LTC_CFB_MODE 16 #ifdef LTC_CFB_MODE
19 17
20 /** 18 /**
21 Set an initial vector 19 Set an initialization vector
22 @param IV The initial vector 20 @param IV The initialization vector
23 @param len The length of the vector (in octets) 21 @param len The length of the vector (in octets)
24 @param cfb The CFB state 22 @param cfb The CFB state
25 @return CRYPT_OK if successful 23 @return CRYPT_OK if successful
26 */ 24 */
27 int cfb_setiv(const unsigned char *IV, unsigned long len, symmetric_CFB *cfb) 25 int cfb_setiv(const unsigned char *IV, unsigned long len, symmetric_CFB *cfb)
28 { 26 {
29 int err; 27 int err;
30 28
31 LTC_ARGCHK(IV != NULL); 29 LTC_ARGCHK(IV != NULL);
32 LTC_ARGCHK(cfb != NULL); 30 LTC_ARGCHK(cfb != NULL);
33 31
34 if ((err = cipher_is_valid(cfb->cipher)) != CRYPT_OK) { 32 if ((err = cipher_is_valid(cfb->cipher)) != CRYPT_OK) {
35 return err; 33 return err;
36 } 34 }
37 35
38 if (len != (unsigned long)cfb->blocklen) { 36 if (len != (unsigned long)cfb->blocklen) {
39 return CRYPT_INVALID_ARG; 37 return CRYPT_INVALID_ARG;
40 } 38 }
41 39
42 /* force next block */ 40 /* force next block */
43 cfb->padlen = 0; 41 cfb->padlen = 0;
44 return cipher_descriptor[cfb->cipher].ecb_encrypt(IV, cfb->IV, &cfb->key); 42 return cipher_descriptor[cfb->cipher].ecb_encrypt(IV, cfb->IV, &cfb->key);
45 } 43 }
46 44
47 #endif 45 #endif
48 46
49 47
50 /* $Source$ */ 48 /* ref: $Format:%D$ */
51 /* $Revision$ */ 49 /* git commit: $Format:%H$ */
52 /* $Date$ */ 50 /* commit time: $Format:%ai$ */