|
sl@0
|
1 |
/*
|
|
sl@0
|
2 |
* Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
sl@0
|
3 |
* All rights reserved.
|
|
sl@0
|
4 |
* This component and the accompanying materials are made available
|
|
sl@0
|
5 |
* under the terms of the License "Eclipse Public License v1.0"
|
|
sl@0
|
6 |
* which accompanies this distribution, and is available
|
|
sl@0
|
7 |
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
|
|
sl@0
|
8 |
*
|
|
sl@0
|
9 |
* Initial Contributors:
|
|
sl@0
|
10 |
* Nokia Corporation - initial contribution.
|
|
sl@0
|
11 |
*
|
|
sl@0
|
12 |
* Contributors:
|
|
sl@0
|
13 |
*
|
|
sl@0
|
14 |
* Description:
|
|
sl@0
|
15 |
*
|
|
sl@0
|
16 |
*/
|
|
sl@0
|
17 |
|
|
sl@0
|
18 |
|
|
sl@0
|
19 |
#include "desshim.h"
|
|
sl@0
|
20 |
|
|
sl@0
|
21 |
#include <cryptospi/cryptosymmetriccipherapi.h>
|
|
sl@0
|
22 |
#include <cryptospi/cryptospidef.h>
|
|
sl@0
|
23 |
#include <cryptospi/plugincharacteristics.h>
|
|
sl@0
|
24 |
#include <cryptospi/keys.h>
|
|
sl@0
|
25 |
#include <cryptostrength.h>
|
|
sl@0
|
26 |
|
|
sl@0
|
27 |
#include "../common/inlines.h"
|
|
sl@0
|
28 |
|
|
sl@0
|
29 |
using namespace CryptoSpi;
|
|
sl@0
|
30 |
|
|
sl@0
|
31 |
// CDESEncryptorShim ////////////////////////////////////////////////////////
|
|
sl@0
|
32 |
CDESEncryptorShim* CDESEncryptorShim::NewL(const TDesC8& aKey)
|
|
sl@0
|
33 |
{
|
|
sl@0
|
34 |
CDESEncryptorShim* self = CDESEncryptorShim::NewLC(aKey);
|
|
sl@0
|
35 |
CleanupStack::Pop(self);
|
|
sl@0
|
36 |
return self;
|
|
sl@0
|
37 |
}
|
|
sl@0
|
38 |
|
|
sl@0
|
39 |
CDESEncryptorShim* CDESEncryptorShim::NewLC(const TDesC8& aKey)
|
|
sl@0
|
40 |
{
|
|
sl@0
|
41 |
CDESEncryptorShim* self = new (ELeave) CDESEncryptorShim();
|
|
sl@0
|
42 |
CleanupStack::PushL(self);
|
|
sl@0
|
43 |
self->ConstructL(aKey);
|
|
sl@0
|
44 |
// DES only used 7 bits out of every key byte
|
|
sl@0
|
45 |
TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()) - aKey.Size());
|
|
sl@0
|
46 |
return self;
|
|
sl@0
|
47 |
}
|
|
sl@0
|
48 |
|
|
sl@0
|
49 |
CDESEncryptorShim::CDESEncryptorShim()
|
|
sl@0
|
50 |
{
|
|
sl@0
|
51 |
}
|
|
sl@0
|
52 |
|
|
sl@0
|
53 |
CDESEncryptorShim::~CDESEncryptorShim()
|
|
sl@0
|
54 |
{
|
|
sl@0
|
55 |
delete iSymmetricCipherImpl;
|
|
sl@0
|
56 |
delete iKey;
|
|
sl@0
|
57 |
}
|
|
sl@0
|
58 |
|
|
sl@0
|
59 |
void CDESEncryptorShim::ConstructL(const TDesC8& aKey)
|
|
sl@0
|
60 |
{
|
|
sl@0
|
61 |
TKeyProperty keyProperty = {KDesUid, KNullUid, KSymmetricKey, KNonEmbeddedKeyUid};
|
|
sl@0
|
62 |
CCryptoParams* keyParam =CCryptoParams::NewLC();
|
|
sl@0
|
63 |
keyParam->AddL(aKey, KSymmetricKeyParameterUid);
|
|
sl@0
|
64 |
iKey=CKey::NewL(keyProperty, *keyParam);
|
|
sl@0
|
65 |
CleanupStack::PopAndDestroy(keyParam);
|
|
sl@0
|
66 |
CSymmetricCipherFactory::CreateSymmetricCipherL(
|
|
sl@0
|
67 |
iSymmetricCipherImpl,
|
|
sl@0
|
68 |
KDesUid,
|
|
sl@0
|
69 |
*iKey,
|
|
sl@0
|
70 |
KCryptoModeEncryptUid,
|
|
sl@0
|
71 |
KOperationModeECBUid,
|
|
sl@0
|
72 |
KPaddingModeNoneUid,
|
|
sl@0
|
73 |
NULL);
|
|
sl@0
|
74 |
}
|
|
sl@0
|
75 |
|
|
sl@0
|
76 |
TInt CDESEncryptorShim::BlockSize() const
|
|
sl@0
|
77 |
{
|
|
sl@0
|
78 |
// SPI returns block size in BITS
|
|
sl@0
|
79 |
return BitsToBytes(iSymmetricCipherImpl->BlockSize());
|
|
sl@0
|
80 |
}
|
|
sl@0
|
81 |
|
|
sl@0
|
82 |
TInt CDESEncryptorShim::KeySize() const
|
|
sl@0
|
83 |
{
|
|
sl@0
|
84 |
return iSymmetricCipherImpl->KeySize();
|
|
sl@0
|
85 |
}
|
|
sl@0
|
86 |
|
|
sl@0
|
87 |
void CDESEncryptorShim::Transform(TDes8& aBlock)
|
|
sl@0
|
88 |
{
|
|
sl@0
|
89 |
iOutputBlock.Zero();
|
|
sl@0
|
90 |
TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
|
|
sl@0
|
91 |
aBlock = iOutputBlock;
|
|
sl@0
|
92 |
}
|
|
sl@0
|
93 |
|
|
sl@0
|
94 |
void CDESEncryptorShim::Reset()
|
|
sl@0
|
95 |
{
|
|
sl@0
|
96 |
iSymmetricCipherImpl->Reset();
|
|
sl@0
|
97 |
}
|
|
sl@0
|
98 |
|
|
sl@0
|
99 |
TInt CDESEncryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
|
|
sl@0
|
100 |
{
|
|
sl@0
|
101 |
TInt ret(KErrNotSupported);
|
|
sl@0
|
102 |
|
|
sl@0
|
103 |
if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
|
|
sl@0
|
104 |
{
|
|
sl@0
|
105 |
a0=iSymmetricCipherImpl;
|
|
sl@0
|
106 |
ret=KErrNone;
|
|
sl@0
|
107 |
}
|
|
sl@0
|
108 |
return ret;
|
|
sl@0
|
109 |
}
|
|
sl@0
|
110 |
|
|
sl@0
|
111 |
// CDESDecryptorShim ////////////////////////////////////////////////////////
|
|
sl@0
|
112 |
CDESDecryptorShim* CDESDecryptorShim::NewL(const TDesC8& aKey)
|
|
sl@0
|
113 |
{
|
|
sl@0
|
114 |
CDESDecryptorShim* self = CDESDecryptorShim::NewLC(aKey);
|
|
sl@0
|
115 |
CleanupStack::Pop(self);
|
|
sl@0
|
116 |
return self;
|
|
sl@0
|
117 |
}
|
|
sl@0
|
118 |
|
|
sl@0
|
119 |
|
|
sl@0
|
120 |
CDESDecryptorShim* CDESDecryptorShim::NewLC(const TDesC8& aKey)
|
|
sl@0
|
121 |
{
|
|
sl@0
|
122 |
CDESDecryptorShim* self = new (ELeave) CDESDecryptorShim();
|
|
sl@0
|
123 |
CleanupStack::PushL(self);
|
|
sl@0
|
124 |
self->ConstructL(aKey);
|
|
sl@0
|
125 |
// DES only used 7 bits out of every key byte
|
|
sl@0
|
126 |
TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()) - aKey.Size());
|
|
sl@0
|
127 |
return self;
|
|
sl@0
|
128 |
}
|
|
sl@0
|
129 |
|
|
sl@0
|
130 |
CDESDecryptorShim::CDESDecryptorShim()
|
|
sl@0
|
131 |
{
|
|
sl@0
|
132 |
}
|
|
sl@0
|
133 |
|
|
sl@0
|
134 |
CDESDecryptorShim::~CDESDecryptorShim()
|
|
sl@0
|
135 |
{
|
|
sl@0
|
136 |
delete iSymmetricCipherImpl;
|
|
sl@0
|
137 |
delete iKey;
|
|
sl@0
|
138 |
}
|
|
sl@0
|
139 |
|
|
sl@0
|
140 |
|
|
sl@0
|
141 |
void CDESDecryptorShim::ConstructL(const TDesC8& aKey)
|
|
sl@0
|
142 |
{
|
|
sl@0
|
143 |
TKeyProperty keyProperty = {KDesUid, KNullUid, KSymmetricKey, KNonEmbeddedKeyUid};
|
|
sl@0
|
144 |
CCryptoParams* keyParam =CCryptoParams::NewLC();
|
|
sl@0
|
145 |
keyParam->AddL(aKey, KSymmetricKeyParameterUid);
|
|
sl@0
|
146 |
iKey=CKey::NewL(keyProperty, *keyParam);
|
|
sl@0
|
147 |
CleanupStack::PopAndDestroy(keyParam);
|
|
sl@0
|
148 |
CSymmetricCipherFactory::CreateSymmetricCipherL(
|
|
sl@0
|
149 |
iSymmetricCipherImpl,
|
|
sl@0
|
150 |
KDesUid,
|
|
sl@0
|
151 |
*iKey,
|
|
sl@0
|
152 |
KCryptoModeDecryptUid,
|
|
sl@0
|
153 |
KOperationModeECBUid,
|
|
sl@0
|
154 |
KPaddingModeNoneUid,
|
|
sl@0
|
155 |
NULL);
|
|
sl@0
|
156 |
}
|
|
sl@0
|
157 |
|
|
sl@0
|
158 |
TInt CDESDecryptorShim::BlockSize() const
|
|
sl@0
|
159 |
{
|
|
sl@0
|
160 |
// SPI returns block size in BITS
|
|
sl@0
|
161 |
return BitsToBytes(iSymmetricCipherImpl->BlockSize());
|
|
sl@0
|
162 |
}
|
|
sl@0
|
163 |
|
|
sl@0
|
164 |
TInt CDESDecryptorShim::KeySize() const
|
|
sl@0
|
165 |
{
|
|
sl@0
|
166 |
return iSymmetricCipherImpl->KeySize();
|
|
sl@0
|
167 |
}
|
|
sl@0
|
168 |
|
|
sl@0
|
169 |
void CDESDecryptorShim::Transform(TDes8& aBlock)
|
|
sl@0
|
170 |
{
|
|
sl@0
|
171 |
iOutputBlock.Zero();
|
|
sl@0
|
172 |
TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
|
|
sl@0
|
173 |
aBlock = iOutputBlock;
|
|
sl@0
|
174 |
}
|
|
sl@0
|
175 |
|
|
sl@0
|
176 |
void CDESDecryptorShim::Reset()
|
|
sl@0
|
177 |
{
|
|
sl@0
|
178 |
iSymmetricCipherImpl->Reset();
|
|
sl@0
|
179 |
}
|
|
sl@0
|
180 |
|
|
sl@0
|
181 |
TInt CDESDecryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
|
|
sl@0
|
182 |
{
|
|
sl@0
|
183 |
TInt ret(KErrNotSupported);
|
|
sl@0
|
184 |
|
|
sl@0
|
185 |
if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
|
|
sl@0
|
186 |
{
|
|
sl@0
|
187 |
a0=iSymmetricCipherImpl;
|
|
sl@0
|
188 |
ret=KErrNone;
|
|
sl@0
|
189 |
}
|
|
sl@0
|
190 |
return ret;
|
|
sl@0
|
191 |
}
|