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comparison src/mac/pmac/pmac_memory.c @ 191:1c15b283127b libtomcrypt-orig

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Import of libtomcrypt 1.02 with manual path rename rearrangement etc
author Matt Johnston <matt@ucc.asn.au>
date Fri, 06 May 2005 13:23:02 +0000
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children 39d5d58461d6
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143:5d99163f7e32 191:1c15b283127b
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 pmac_memory.c
15 PMAC implementation, process a block of memory, by Tom St Denis
16 */
17
18 #ifdef PMAC
19
20 /**
21 PMAC a block of memory
22 @param cipher The index of the cipher desired
23 @param key The secret key
24 @param keylen The length of the secret key (octets)
25 @param in The data you wish to send through PMAC
26 @param inlen The length of data you wish to send through PMAC (octets)
27 @param out [out] Destination for the authentication tag
28 @param outlen [in/out] The max size and resulting size of the authentication tag
29 @return CRYPT_OK if successful
30 */
31 int pmac_memory(int cipher,
32 const unsigned char *key, unsigned long keylen,
33 const unsigned char *in, unsigned long inlen,
34 unsigned char *out, unsigned long *outlen)
35 {
36 int err;
37 pmac_state *pmac;
38
39 LTC_ARGCHK(key != NULL);
40 LTC_ARGCHK(in != NULL);
41 LTC_ARGCHK(out != NULL);
42 LTC_ARGCHK(outlen != NULL);
43
44 /* allocate ram for pmac state */
45 pmac = XMALLOC(sizeof(pmac_state));
46 if (pmac == NULL) {
47 return CRYPT_MEM;
48 }
49
50 if ((err = pmac_init(pmac, cipher, key, keylen)) != CRYPT_OK) {
51 goto LBL_ERR;
52 }
53 if ((err = pmac_process(pmac, in, inlen)) != CRYPT_OK) {
54 goto LBL_ERR;
55 }
56 if ((err = pmac_done(pmac, out, outlen)) != CRYPT_OK) {
57 goto LBL_ERR;
58 }
59
60 err = CRYPT_OK;
61 LBL_ERR:
62 #ifdef LTC_CLEAN_STACK
63 zeromem(pmac, sizeof(pmac_state));
64 #endif
65
66 XFREE(pmac);
67 return err;
68 }
69
70 #endif