|
1 /* |
|
2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of the License "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 |
|
20 #include "arc4shim.h" |
|
21 |
|
22 #include "cryptosymmetriccipherapi.h" |
|
23 #include <cryptospi/cryptospidef.h> |
|
24 #include <cryptospi/plugincharacteristics.h> |
|
25 #include <cryptostrength.h> |
|
26 #include "../common/inlines.h" |
|
27 #include "keys.h" |
|
28 |
|
29 using namespace CryptoSpi; |
|
30 |
|
31 CArc4Shim* CArc4Shim::NewL(const TDesC8& aKey, TUint aDiscardBytes) |
|
32 { |
|
33 CArc4Shim* self = NewLC(aKey, aDiscardBytes); |
|
34 CleanupStack::Pop(self); |
|
35 return self; |
|
36 } |
|
37 |
|
38 CArc4Shim* CArc4Shim::NewLC(const TDesC8& aKey, TUint aDiscardBytes) |
|
39 { |
|
40 CArc4Shim* self = new (ELeave) CArc4Shim(); |
|
41 CleanupStack::PushL(self); |
|
42 self->ConstructL(aKey, aDiscardBytes); |
|
43 TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size())); |
|
44 return self; |
|
45 } |
|
46 |
|
47 void CArc4Shim::ConstructL(const TDesC8& aKey, TUint aDiscardBytes) |
|
48 { |
|
49 TKeyProperty keyProperty = {KArc4Uid, KNullUid, KSymmetricKey, KNonEmbeddedKeyUid}; |
|
50 CCryptoParams* keyParam =CCryptoParams::NewLC(); |
|
51 keyParam->AddL(aKey, KSymmetricKeyParameterUid); |
|
52 iKey=CKey::NewL(keyProperty, *keyParam); |
|
53 CleanupStack::PopAndDestroy(keyParam); |
|
54 |
|
55 iAlgorithmParams = CCryptoParams::NewL(); |
|
56 iAlgorithmParams->AddL(aDiscardBytes, KARC4DiscardBytes); |
|
57 |
|
58 CSymmetricCipherFactory::CreateSymmetricCipherL( |
|
59 iSymmetricCipherImpl, |
|
60 KArc4Uid, |
|
61 *iKey, |
|
62 KCryptoModeNoneUid, |
|
63 KOperationModeNoneUid, |
|
64 KPaddingModeNoneUid, |
|
65 iAlgorithmParams); |
|
66 } |
|
67 |
|
68 CArc4Shim::~CArc4Shim() |
|
69 { |
|
70 delete iSymmetricCipherImpl; |
|
71 delete iKey; |
|
72 delete iAlgorithmParams; |
|
73 } |
|
74 |
|
75 void CArc4Shim::Reset() |
|
76 { |
|
77 iSymmetricCipherImpl->Reset(); |
|
78 } |
|
79 |
|
80 TInt CArc4Shim::BlockSize() const |
|
81 { |
|
82 return iSymmetricCipherImpl->BlockSize() >> 3; // Convert to bits |
|
83 } |
|
84 |
|
85 TInt CArc4Shim::KeySize() const |
|
86 { |
|
87 return iSymmetricCipherImpl->KeySize(); |
|
88 } |
|
89 |
|
90 void CArc4Shim::Process(const TDesC8& aInput, TDes8& aOutput) |
|
91 { |
|
92 TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aInput, aOutput);) |
|
93 } |
|
94 |
|
95 void CArc4Shim::ProcessFinalL(const TDesC8& aInput, TDes8& aOutput) |
|
96 { |
|
97 iSymmetricCipherImpl->ProcessFinalL(aInput, aOutput); |
|
98 } |
|
99 |
|
100 TInt CArc4Shim::MaxOutputLength(TInt aInputLength) const |
|
101 { |
|
102 return iSymmetricCipherImpl->MaxOutputLength(aInputLength); |
|
103 } |
|
104 |
|
105 TInt CArc4Shim::MaxFinalOutputLength(TInt aInputLength) const |
|
106 { |
|
107 return iSymmetricCipherImpl->MaxFinalOutputLength(aInputLength); |
|
108 } |
|
109 |
|
110 CArc4Shim::CArc4Shim() |
|
111 { |
|
112 } |
|
113 |