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comparison libtomcrypt/src/modes/ecb/ecb_encrypt.c @ 389:5ff8218bcee9

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propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 2af95f00ebd5bb7a28b3817db1218442c935388e) to branch 'au.asn.ucc.matt.dropbear' (head ecd779509ef23a8cdf64888904fc9b31d78aa933)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 03:14:55 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
comparison
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388:fb54020f78e1 389:5ff8218bcee9
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 ecb_encrypt.c
15 ECB implementation, encrypt a block, Tom St Denis
16 */
17
18 #ifdef LTC_ECB_MODE
19
20 /**
21 ECB encrypt
22 @param pt Plaintext
23 @param ct [out] Ciphertext
24 @param len The number of octets to process (must be multiple of the cipher block size)
25 @param ecb ECB state
26 @return CRYPT_OK if successful
27 */
28 int ecb_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_ECB *ecb)
29 {
30 int err;
31 LTC_ARGCHK(pt != NULL);
32 LTC_ARGCHK(ct != NULL);
33 LTC_ARGCHK(ecb != NULL);
34 if ((err = cipher_is_valid(ecb->cipher)) != CRYPT_OK) {
35 return err;
36 }
37 if (len % cipher_descriptor[ecb->cipher].block_length) {
38 return CRYPT_INVALID_ARG;
39 }
40
41 /* check for accel */
42 if (cipher_descriptor[ecb->cipher].accel_ecb_encrypt != NULL) {
43 return cipher_descriptor[ecb->cipher].accel_ecb_encrypt(pt, ct, len / cipher_descriptor[ecb->cipher].block_length, &ecb->key);
44 } else {
45 while (len) {
46 if ((err = cipher_descriptor[ecb->cipher].ecb_encrypt(pt, ct, &ecb->key)) != CRYPT_OK) {
47 return err;
48 }
49 pt += cipher_descriptor[ecb->cipher].block_length;
50 ct += cipher_descriptor[ecb->cipher].block_length;
51 len -= cipher_descriptor[ecb->cipher].block_length;
52 }
53 }
54 return CRYPT_OK;
55 }
56
57 #endif
58
59 /* $Source: /cvs/libtom/libtomcrypt/src/modes/ecb/ecb_encrypt.c,v $ */
60 /* $Revision: 1.9 $ */
61 /* $Date: 2006/06/29 01:51:34 $ */