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comparison src/mac/omac/omac_process.c @ 209:39d5d58461d6 libtomcrypt-orig LTC_1.05

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Import of libtomcrypt 1.05
author Matt Johnston <matt@ucc.asn.au>
date Wed, 06 Jul 2005 03:53:40 +0000
parents 1c15b283127b
children
comparison
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191:1c15b283127b 209:39d5d58461d6
25 @param inlen The length of the input (octets) 25 @param inlen The length of the input (octets)
26 @return CRYPT_OK if successful 26 @return CRYPT_OK if successful
27 */ 27 */
28 int omac_process(omac_state *omac, const unsigned char *in, unsigned long inlen) 28 int omac_process(omac_state *omac, const unsigned char *in, unsigned long inlen)
29 { 29 {
30 int err, n, x; 30 unsigned long n, x;
31 int err;
31 32
32 LTC_ARGCHK(omac != NULL); 33 LTC_ARGCHK(omac != NULL);
33 LTC_ARGCHK(in != NULL); 34 LTC_ARGCHK(in != NULL);
34 if ((err = cipher_is_valid(omac->cipher_idx)) != CRYPT_OK) { 35 if ((err = cipher_is_valid(omac->cipher_idx)) != CRYPT_OK) {
35 return err; 36 return err;
55 #endif 56 #endif
56 57
57 while (inlen != 0) { 58 while (inlen != 0) {
58 /* ok if the block is full we xor in prev, encrypt and replace prev */ 59 /* ok if the block is full we xor in prev, encrypt and replace prev */
59 if (omac->buflen == omac->blklen) { 60 if (omac->buflen == omac->blklen) {
60 for (x = 0; x < omac->blklen; x++) { 61 for (x = 0; x < (unsigned long)omac->blklen; x++) {
61 omac->block[x] ^= omac->prev[x]; 62 omac->block[x] ^= omac->prev[x];
62 } 63 }
63 cipher_descriptor[omac->cipher_idx].ecb_encrypt(omac->block, omac->prev, &omac->key); 64 cipher_descriptor[omac->cipher_idx].ecb_encrypt(omac->block, omac->prev, &omac->key);
64 omac->buflen = 0; 65 omac->buflen = 0;
65 } 66 }
75 return CRYPT_OK; 76 return CRYPT_OK;
76 } 77 }
77 78
78 #endif 79 #endif
79 80
81
82 /* $Source: /cvs/libtom/libtomcrypt/src/mac/omac/omac_process.c,v $ */
83 /* $Revision: 1.6 $ */
84 /* $Date: 2005/05/05 14:35:58 $ */