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comparison libtomcrypt/src/mac/hmac/hmac_memory.c @ 1471:6dba84798cd5

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Update to libtomcrypt 1.18.1, merged with Dropbear changes
author Matt Johnston <matt@ucc.asn.au>
date Fri, 09 Feb 2018 21:44:05 +0800
parents f849a5ca2efc
children
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1470:8bba51a55704 1471:6dba84798cd5
3 * LibTomCrypt is a library that provides various cryptographic 3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner. 4 * algorithms in a highly modular and flexible manner.
5 * 5 *
6 * The library is free for all purposes without any express 6 * The library is free for all purposes without any express
7 * guarantee it works. 7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtom.org
10 */ 8 */
11 #include "tomcrypt.h" 9 #include "tomcrypt.h"
12 10
13 /** 11 /**
14 @file hmac_memory.c 12 @file hmac_memory.c
15 LTC_HMAC support, process a block of memory, Tom St Denis/Dobes Vandermeer 13 HMAC support, process a block of memory, Tom St Denis/Dobes Vandermeer
16 */ 14 */
17 15
18 #ifdef LTC_HMAC 16 #ifdef LTC_HMAC
19 17
20 /** 18 /**
21 LTC_HMAC a block of memory to produce the authentication tag 19 HMAC a block of memory to produce the authentication tag
22 @param hash The index of the hash to use 20 @param hash The index of the hash to use
23 @param key The secret key 21 @param key The secret key
24 @param keylen The length of the secret key (octets) 22 @param keylen The length of the secret key (octets)
25 @param in The data to LTC_HMAC 23 @param in The data to HMAC
26 @param inlen The length of the data to LTC_HMAC (octets) 24 @param inlen The length of the data to HMAC (octets)
27 @param out [out] Destination of the authentication tag 25 @param out [out] Destination of the authentication tag
28 @param outlen [in/out] Max size and resulting size of authentication tag 26 @param outlen [in/out] Max size and resulting size of authentication tag
29 @return CRYPT_OK if successful 27 @return CRYPT_OK if successful
30 */ 28 */
31 int hmac_memory(int hash, 29 int hmac_memory(int hash,
32 const unsigned char *key, unsigned long keylen, 30 const unsigned char *key, unsigned long keylen,
33 const unsigned char *in, unsigned long inlen, 31 const unsigned char *in, unsigned long inlen,
34 unsigned char *out, unsigned long *outlen) 32 unsigned char *out, unsigned long *outlen)
35 { 33 {
36 hmac_state *hmac; 34 hmac_state *hmac;
37 int err; 35 int err;
38 36
39 LTC_ARGCHK(key != NULL); 37 LTC_ARGCHK(key != NULL);
40 LTC_ARGCHK(in != NULL); 38 LTC_ARGCHK(in != NULL);
41 LTC_ARGCHK(out != NULL); 39 LTC_ARGCHK(out != NULL);
42 LTC_ARGCHK(outlen != NULL); 40 LTC_ARGCHK(outlen != NULL);
43 41
44 /* make sure hash descriptor is valid */ 42 /* make sure hash descriptor is valid */
45 if ((err = hash_is_valid(hash)) != CRYPT_OK) { 43 if ((err = hash_is_valid(hash)) != CRYPT_OK) {
46 return err; 44 return err;
75 #ifdef LTC_CLEAN_STACK 73 #ifdef LTC_CLEAN_STACK
76 zeromem(hmac, sizeof(hmac_state)); 74 zeromem(hmac, sizeof(hmac_state));
77 #endif 75 #endif
78 76
79 XFREE(hmac); 77 XFREE(hmac);
80 return err; 78 return err;
81 } 79 }
82 80
83 #endif 81 #endif
84 82
85 83
86 /* $Source$ */ 84 /* ref: $Format:%D$ */
87 /* $Revision$ */ 85 /* git commit: $Format:%H$ */
88 /* $Date$ */ 86 /* commit time: $Format:%ai$ */