diff -r 000000000000 -r 2c201484c85f crypto/weakcrypto/source/hash/sha2.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/crypto/weakcrypto/source/hash/sha2.cpp Wed Jul 08 11:25:26 2009 +0100 @@ -0,0 +1,294 @@ +/* +* 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 +#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(aSHA2.iImplementation); + iImplementation = new (ELeave) CSHA224And256(*impl); + break; + } + case E384Bit: + case E512Bit: + { + const CSHA384And512* const impl = static_cast(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