--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcrypto/source/hash/sha2.cpp Fri Jun 11 15:32:35 2010 +0300
@@ -0,0 +1,293 @@
+/*
+* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+* software SHA2 implementation
+* RFC 4634 (US Secure Hash Algorithms (SHA and HMAC-SHA))
+* FIPS 180-2 (With change notice)
+*
+*/
+
+
+/**
+ @file
+*/
+
+#include <hash.h>
+#include "sha224and256.h"
+#include "sha384and512.h"
+
+// Initial Hash Values of SHA2 algorithms
+/**
+ * Initial Hash Value for SHA-224
+ *
+ * These words were obtained by taking the first thirty-two bits
+ * of the fractional parts of the square roots of the first eight
+ * prime numbers.
+ *
+ * FIPS 180-2 Appendix
+ * FIPS 180-3 Section 5.3.2
+ */
+const TUint SHA224InitVals[] =
+ {
+ 0xc1059ed8, // A
+ 0x367cd507, // B
+ 0x3070dd17, // C
+ 0xf70e5939, // D
+ 0xffc00b31, // E
+ 0x68581511, // F
+ 0x64f98fa7, // G
+ 0xbefa4fa4 // H
+ };
+
+/**
+ * Initial Hash Value for SHA-256
+ *
+ * These words were obtained by taking the first thirty-two bits
+ * of the fractional parts of the square roots of the first eight
+ * prime numbers.
+ *
+ * FIPS 180-2 Section 5.3.2
+ */
+const TUint SHA256InitVals[] =
+ {
+ 0x6a09e667, // A
+ 0xbb67ae85, // B
+ 0x3c6ef372, // C
+ 0xa54ff53a, // D
+ 0x510e527f, // E
+ 0x9b05688c, // F
+ 0x1f83d9ab, // G
+ 0x5be0cd19 // H
+ };
+
+/**
+ * Initial Hash Value for SHA-384
+ *
+ * These words were obtained by taking the first sixty-four bits
+ * of the fractional parts of the square roots of the first eight
+ * prime numbers.
+ *
+ * FIPS 180-2 Section 5.3.3
+ */
+const TUint64 SHA384InitVals[] =
+ {
+ UI64LIT(0xcbbb9d5dc1059ed8), // A
+ UI64LIT(0x629a292a367cd507), // B
+ UI64LIT(0x9159015a3070dd17), // C
+ UI64LIT(0x152fecd8f70e5939), // D
+ UI64LIT(0x67332667ffc00b31), // E
+ UI64LIT(0x8eb44a8768581511), // F
+ UI64LIT(0xdb0c2e0d64f98fa7), // G
+ UI64LIT(0x47b5481dbefa4fa4) // H
+ };
+
+/**
+ * Initial Hash Value for SHA-512
+ *
+ * These words were obtained by taking the first sixty-four bits
+ * of the fractional parts of the square roots of the first eight
+ * prime numbers.
+ *
+ * FIPS 180-2 Section 5.3.4
+ */
+const TUint64 SHA512InitVals[] =
+ {
+ UI64LIT(0x6a09e667f3bcc908), // A
+ UI64LIT(0xbb67ae8584caa73b), // B
+ UI64LIT(0x3c6ef372fe94f82b), // C
+ UI64LIT(0xa54ff53a5f1d36f1), // D
+ UI64LIT(0x510e527fade682d1), // E
+ UI64LIT(0x9b05688c2b3e6c1f), // F
+ UI64LIT(0x1f83d9abfb41bd6b), // G
+ UI64LIT(0x5be0cd19137e2179) // H
+ };
+
+
+EXPORT_C CSHA2* CSHA2::NewL(TSH2Algo aAlgorithmId)
+ {
+ CSHA2* self = CSHA2::NewLC(aAlgorithmId);
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+EXPORT_C CSHA2* CSHA2::NewLC(TSH2Algo aAlgorithmId)
+ {
+ CSHA2* self = new (ELeave) CSHA2();
+ CleanupStack::PushL(self);
+ self->ConstructL(aAlgorithmId);
+ return self;
+ }
+
+void CSHA2::ConstructL(const CSHA2& aSHA2)
+ {
+ iAlgorithmType = aSHA2.iAlgorithmType;
+ iInitValues = aSHA2.iInitValues;
+ iHashSize = aSHA2.iHashSize;
+ switch(iAlgorithmType)
+ {
+ case E224Bit:
+ case E256Bit:
+ {
+ const CSHA224And256* const impl = static_cast<CSHA224And256*>(aSHA2.iImplementation);
+ iImplementation = new (ELeave) CSHA224And256(*impl);
+ break;
+ }
+ case E384Bit:
+ case E512Bit:
+ {
+ const CSHA384And512* const impl = static_cast<CSHA384And512*>(aSHA2.iImplementation);
+ iImplementation = new (ELeave) CSHA384And512(*impl);
+ break;
+ }
+ default:
+ {
+ User::Leave(KErrNotSupported);
+ }
+ }
+ }
+
+void CSHA2::ConstructL(TSH2Algo aAlgorithmId)
+ {
+ switch(aAlgorithmId)
+ {
+ case E224Bit:
+ {
+ iImplementation = CSHA224And256::NewL();
+ iInitValues = SHA224InitVals;
+ iAlgorithmType = E224Bit;
+ iHashSize = KSHA224HashSize;
+ break;
+ }
+ case E256Bit:
+ {
+ iImplementation = CSHA224And256::NewL();
+ iInitValues = SHA256InitVals;
+ iAlgorithmType = E256Bit;
+ iHashSize = KSHA256HashSize;
+ break;
+ }
+ case E384Bit:
+ {
+ iImplementation = CSHA384And512::NewL();
+ iInitValues = SHA384InitVals;
+ iAlgorithmType = E384Bit;
+ iHashSize = KSHA384HashSize;
+ break;
+ }
+ case E512Bit:
+ {
+ iImplementation = CSHA384And512::NewL();
+ iInitValues = SHA512InitVals;
+ iAlgorithmType = E512Bit;
+ iHashSize = KSHA512HashSize;
+ break;
+ }
+ default:
+ {
+ User::Leave(KErrNotSupported);
+ }
+ }
+
+ Reset();
+ }
+
+EXPORT_C CSHA2::~CSHA2()
+ {
+ delete iImplementation;
+ }
+
+EXPORT_C CMessageDigest* CSHA2::ReplicateL()
+ {
+ return CSHA2::NewL(iAlgorithmType);
+ }
+
+EXPORT_C TPtrC8 CSHA2::Hash(const TDesC8& aMessage)
+ {
+ TPtrC8 ptr(KNullDesC8());
+ iImplementation->Update(aMessage.Ptr(),aMessage.Size());
+ iImplementation->StoreState();
+ ptr.Set(iImplementation->Final().Ptr(), iHashSize);
+ iImplementation->RestoreState();
+ return ptr;
+ }
+
+EXPORT_C CMessageDigest* CSHA2::CopyL()
+ {
+ CSHA2* hash = new(ELeave) CSHA2();
+ CleanupStack::PushL(hash);
+ hash->ConstructL(*this);
+ CleanupStack::Pop(hash);
+ return hash;
+ }
+
+EXPORT_C TInt CSHA2::BlockSize(void)
+ {
+ TInt blockSize = KSHA256BlockSize;
+ if(E384Bit == iAlgorithmType || E512Bit == iAlgorithmType)
+ {
+ blockSize = KSHA512BlockSize;
+ }
+ return blockSize;
+ }
+
+EXPORT_C TInt CSHA2::HashSize(void)
+ {
+ return iHashSize;
+ }
+
+EXPORT_C void CSHA2::Reset()
+ {
+ iImplementation->Reset(iInitValues);
+ }
+
+EXPORT_C void CSHA2::Update(const TDesC8& aMessage)
+ {
+ iImplementation->Update(aMessage.Ptr(),aMessage.Size());
+ }
+
+EXPORT_C TPtrC8 CSHA2::Final(void)
+ {
+ TPtrC8 ptr(KNullDesC8());
+ ptr.Set(iImplementation->Final().Ptr(), iHashSize);
+ Reset();
+ return ptr;
+ }
+
+EXPORT_C TPtrC8 CSHA2::Final(const TDesC8& aMessage)
+ {
+ iImplementation->Update(aMessage.Ptr(),aMessage.Size());
+ TPtrC8 ptr(KNullDesC8());
+ ptr.Set(iImplementation->Final().Ptr(), iHashSize);
+ Reset();
+ return ptr;
+ }
+
+void CSHA2::RestoreState()
+ {
+ iImplementation->RestoreState();
+ }
+
+void CSHA2::StoreState()
+ {
+ iImplementation->StoreState();
+ }
+
+// Implemented in hmacimpl.cpp or softwarehashbase.cpp
+// but required as derived from MHash. No coverage here.
+#ifdef _BullseyeCoverage
+#pragma suppress_warnings on
+#pragma BullseyeCoverage off
+#pragma suppress_warnings off
+#endif
+