|
380
|
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.com |
|
|
10 */ |
|
|
11 #include "tomcrypt.h" |
|
|
12 |
|
|
13 /** |
|
|
14 @file f8_setiv.c |
|
|
15 F8 implementation, set IV, Tom St Denis |
|
|
16 */ |
|
|
17 |
|
|
18 #ifdef LTC_F8_MODE |
|
|
19 |
|
|
20 /** |
|
|
21 Set an initial vector |
|
|
22 @param IV The initial vector |
|
|
23 @param len The length of the vector (in octets) |
|
|
24 @param f8 The F8 state |
|
|
25 @return CRYPT_OK if successful |
|
|
26 */ |
|
|
27 int f8_setiv(const unsigned char *IV, unsigned long len, symmetric_F8 *f8) |
|
|
28 { |
|
|
29 int err; |
|
|
30 |
|
|
31 LTC_ARGCHK(IV != NULL); |
|
|
32 LTC_ARGCHK(f8 != NULL); |
|
|
33 |
|
|
34 if ((err = cipher_is_valid(f8->cipher)) != CRYPT_OK) { |
|
|
35 return err; |
|
|
36 } |
|
|
37 |
|
|
38 if (len != (unsigned long)f8->blocklen) { |
|
|
39 return CRYPT_INVALID_ARG; |
|
|
40 } |
|
|
41 |
|
|
42 /* force next block */ |
|
|
43 f8->padlen = 0; |
|
|
44 return cipher_descriptor[f8->cipher].ecb_encrypt(IV, f8->IV, &f8->key); |
|
|
45 } |
|
|
46 |
|
|
47 #endif |
|
|
48 |
|
|
49 |
|
|
50 /* $Source: /cvs/libtom/libtomcrypt/src/modes/f8/f8_setiv.c,v $ */ |
|
|
51 /* $Revision: 1.2 $ */ |
|
|
52 /* $Date: 2006/06/16 22:49:25 $ */ |
