1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/* ****************************************************************************
* eID Middleware Project.
* Copyright (C) 2008-2009 FedICT.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version
* 3.0 as published by the Free Software Foundation.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, see
* http://www.gnu.org/licenses/.
**************************************************************************** */
/**
* This class takes care of hashing (SHA1, MD5, ..)
*
* Instead of providing the result of GetHash() to the
* CCard::Sign() function, it is better to provide the
* hash object itself to CCard::Sign(); this way it's
* possible for the CardLayer to do 'partial signatures'
* in which the last part of the hash is calculated on
* the card.
* Example:
* CByteArray sign(CCard &oCard, const tPrivKey & key, const tPin & Pin)
* {
* CHash oHash;
* oHash.Init(ALGO_MD5_SHA1);
* oHash.Update(...);
* oHash.Update(...);
* return oCard.Sign(key, Pin, SIGN_ALGO_RSA_PKCS, oHash);
* }
*
* TODO: add support for partial signing (when needed).
*/
#pragma once
#ifndef HASH_H
#define HASH_H
#include "Export.h"
#include "ByteArray.h"
#include "libtomcrypt/tomcrypt_hash.h"
namespace eIDMW
{
enum tHashAlgo {
ALGO_MD5, // 16-byte hash
ALGO_SHA1, // 20-byte hash
ALGO_MD5_SHA1, // 36-byte hash, useful for SSL/TLS
ALGO_SHA256, // 32-byte hash
ALGO_SHA384, // 48-byte hash
ALGO_SHA512, // 64-byte hash
ALGO_RIPEMD160, // 64-byte hash
};
class EIDMW_CMN_API CHash
{
public:
CHash();
static unsigned long GetHashLength(tHashAlgo algo);
/* All at once */
CByteArray Hash(tHashAlgo algo, const CByteArray & data);
CByteArray Hash(tHashAlgo algo, const CByteArray & data,
unsigned long ulOffset, unsigned long ulLen);
void Init(tHashAlgo algo);
void Update(const CByteArray & data);
void Update(const CByteArray & data, unsigned long ulOffset, unsigned long ulLen);
CByteArray GetHash();
private:
hash_state m_md1;
hash_state m_md2;
tHashAlgo m_Algo;
bool m_bInitialized;
};
}
#endif
|
