Mercurial > dropbear

comparison src/modes/ecb/ecb_encrypt.c @ 192:9cc34777b479 libtomcrypt

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
propagate from branch 'au.asn.ucc.matt.ltc-orig' (head 9ba8f01f44320e9cb9f19881105ae84f84a43ea9) to branch 'au.asn.ucc.matt.dropbear.ltc' (head dbf51c569bc34956ad948e4cc87a0eeb2170b768)
author Matt Johnston <matt@ucc.asn.au>
date Sun, 08 May 2005 06:36:47 +0000
parents 1c15b283127b
children 39d5d58461d6
comparison
equal deleted inserted replaced
164:cd1143579f00 192:9cc34777b479
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 ecb_encrypt.c
15 ECB implementation, encrypt a block, Tom St Denis
16 */
17
18 #ifdef ECB
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 cipher_descriptor[ecb->cipher].accel_ecb_encrypt(pt, ct, len / cipher_descriptor[ecb->cipher].block_length, &ecb->key);
44 } else {
45 while (len) {
46 cipher_descriptor[ecb->cipher].ecb_encrypt(pt, ct, &ecb->key);
47 pt += cipher_descriptor[ecb->cipher].block_length;
48 ct += cipher_descriptor[ecb->cipher].block_length;
49 len -= cipher_descriptor[ecb->cipher].block_length;
50 }
51 }
52 return CRYPT_OK;
53 }
54
55 #endif