Mercurial > dropbear

comparison src/hashes/helper/hash_memory.c @ 191:1c15b283127b libtomcrypt-orig

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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
parents
children 39d5d58461d6
comparison
equal deleted inserted replaced
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 hash_memory.c
15 Hash memory helper, Tom St Denis
16 */
17
18 /**
19 Hash a block of memory and store the digest.
20 @param hash The index of the hash you wish to use
21 @param in The data you wish to hash
22 @param inlen The length of the data to hash (octets)
23 @param out [out] Where to store the digest
24 @param outlen [in/out] Max size and resulting size of the digest
25 @return CRYPT_OK if successful
26 */
27 int hash_memory(int hash, const unsigned char *in, unsigned long inlen, unsigned char *out, unsigned long *outlen)
28 {
29 hash_state *md;
30 int err;
31
32 LTC_ARGCHK(in != NULL);
33 LTC_ARGCHK(out != NULL);
34 LTC_ARGCHK(outlen != NULL);
35
36 if ((err = hash_is_valid(hash)) != CRYPT_OK) {
37 return err;
38 }
39
40 if (*outlen < hash_descriptor[hash].hashsize) {
41 return CRYPT_BUFFER_OVERFLOW;
42 }
43
44 md = XMALLOC(sizeof(hash_state));
45 if (md == NULL) {
46 return CRYPT_MEM;
47 }
48
49 if ((err = hash_descriptor[hash].init(md)) != CRYPT_OK) {
50 goto LBL_ERR;
51 }
52 if ((err = hash_descriptor[hash].process(md, in, inlen)) != CRYPT_OK) {
53 goto LBL_ERR;
54 }
55 err = hash_descriptor[hash].done(md, out);
56 *outlen = hash_descriptor[hash].hashsize;
57 LBL_ERR:
58 #ifdef LTC_CLEAN_STACK
59 zeromem(md, sizeof(hash_state));
60 #endif
61 XFREE(md);
62
63 return err;
64 }