--- a/crypto/weakcrypto/source/hash/sha224and256.cpp Tue Aug 31 17:00:08 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,486 +0,0 @@
-/*
-* 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:
-* Common implementation of SHA224 and SHA256
-* RFC 4634 (US Secure Hash Algorithms (SHA and HMAC-SHA))
-*
-*/
-
-
-/**
- @file
-*/
-
-
-#include "sha224and256.h"
-
-/**
- * SHA256 Constants
- *
- * SHA-256 uses a sequence of sixty-four constant 32-bit words.
- * These words represent the first thirty-two bits of the fractional
- * parts of the cube roots of the first sixtyfour prime numbers.
- *
- * FIPS 180-2 Section 4.2.2
- */
-const TUint K[64] =
- {
- 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
- 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
- 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
- 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
- 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
- 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
- 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
- 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
- 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
- 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
- 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
- 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
- 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
- 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
- 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
- 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
- };
-
-/**
- * Define the SHA SIGMA and sigma macros
- *
- * FIPS 180-2 section 4.1.2
- */
-// Equation 4.4
-inline TUint SHA256_SIGMA0(TUint aWord)
- {
- return (SHA_ROTR<TUint>( 2,aWord) ^ SHA_ROTR<TUint>(13,aWord) ^ SHA_ROTR<TUint>(22,aWord));
- }
-// Equation 4.5
-inline TUint SHA256_SIGMA1(TUint aWord)
- {
- return (SHA_ROTR<TUint>( 6,aWord) ^ SHA_ROTR<TUint>(11,aWord) ^ SHA_ROTR<TUint>(25,aWord));
- }
-// Equation 4.6
-inline TUint SHA256_sigma0(TUint aWord)
- {
- return (SHA_ROTR<TUint>( 7,aWord) ^ SHA_ROTR<TUint>(18,aWord) ^ SHA_SHR<TUint>( 3,aWord));
- }
-// Equation 4.7
-inline TUint SHA256_sigma1(TUint aWord)
- {
- return (SHA_ROTR<TUint>(17,aWord) ^ SHA_ROTR<TUint>(19,aWord) ^ SHA_SHR<TUint>(10,aWord));
- }
-
-
-// Macros
-inline TUint MakeWord(const TUint8* aData)
- {
- return (aData[0] << 24 | aData[1] << 16 | aData[2] << 8 | aData[3]);
- }
-
-
-CSHA224And256* CSHA224And256::NewL()
- {
- CSHA224And256* self=new (ELeave) CSHA224And256();
- return self;
- }
-
-CSHA224And256::CSHA224And256() : iHash(KSHA256HashSize)
- {
- }
-
-CSHA224And256::CSHA224And256(const CSHA224And256& aSHAImpl)
- : iHash(aSHAImpl.iHash),
- iA(aSHAImpl.iA),
- iB(aSHAImpl.iB),
- iC(aSHAImpl.iC),
- iD(aSHAImpl.iD),
- iE(aSHAImpl.iE),
- iF(aSHAImpl.iF),
- iG(aSHAImpl.iG),
- iH(aSHAImpl.iH),
- iNl(aSHAImpl.iNl),
- iNh(aSHAImpl.iNh)
- {
- Mem::Copy(iData, aSHAImpl.iData, KSHA256BlockSize*sizeof(TUint));
- }
-
-void CSHA224And256::Reset(const TAny* aValArray)
- {
- const TUint* values = static_cast<const TUint*>(aValArray);
- iA=values[0];
- iB=values[1];
- iC=values[2];
- iD=values[3];
- iE=values[4];
- iF=values[5];
- iG=values[6];
- iH=values[7];
- iNh=0;
- iNl=0;
- }
-
-// This assumes a big-endian architecture
-void CSHA224And256::Update(const TUint8* aData,TUint aLength)
- {
- while((aLength / 4) > 0 && (iNl % 4 == 0))
- {
- iData[iNl>>2] = MakeWord(aData);
- iNl+=4;
- aData+=4;
- aLength-=4;
- if(iNl==KSHA256BlockSize)
- {
- Block();
- AddLength(KSHA256BlockSize);
- }
- }
-
- while(aLength--)
- {
- if(!(iNl&0x03))
- {
- iData[iNl >> 2] = 0;
- }
- iData[iNl >> 2] |= *aData << ((3 - iNl&0x03) << 3) ;
- ++aData;
- ++iNl;
- if(iNl==KSHA256BlockSize)
- {
- Block();
- AddLength(KSHA256BlockSize);
- }
- }
- }
-
-//This function will panic if the total input length is longer than 2^64 in bits
-_LIT(KPanicString, "Message length exceeds supported length");
-inline void CSHA224And256::AddLength(const TUint aLength)
- {
- TUint64 temp = iNh;
- iNh += aLength << 3;
- __ASSERT_ALWAYS((temp <= iNh), User::Panic(KPanicString, KErrOverflow));
- }
-
-
-static inline void CSHA256_16( const TUint aA,
- const TUint aB,
- const TUint aC,
- TUint& aD,
- const TUint aE,
- const TUint aF,
- const TUint aG,
- TUint& aH,
- TUint aTemp1,
- TUint aTemp2,
- const TUint aK,
- const TUint aWord)
- {
- aTemp1 = aH + SHA256_SIGMA1(aE) + SHA_Ch(aE,aF,aG) + aK + aWord;
- aTemp2 = SHA256_SIGMA0(aA) + SHA_Maj(aA,aB,aC);
- aD = aD + aTemp1;
- aH = aTemp1 + aTemp2;
- }
-
-static inline void CSHA256_48( const TUint aA,
- const TUint aB,
- const TUint aC,
- TUint& aD,
- const TUint aE,
- const TUint aF,
- const TUint aG,
- TUint& aH,
- TUint aTemp1,
- TUint aTemp2,
- const TUint aK,
- TUint& aWord0,
- const TUint aWord2,
- const TUint aWord7,
- const TUint aWord15,
- const TUint aWord16)
- {
- aWord0 = SHA256_sigma1(aWord2) + aWord7 + SHA256_sigma0(aWord15) + aWord16;
- CSHA256_16(aA, aB, aC, aD, aE, aF, aG, aH, aTemp1, aTemp2, aK, aWord0);
- }
-
-/**
- * This function actually calculates the hash.
- * Function is defined in FIPS 180-2 section 6.2.2
- *
- * This function is the expanded version of the following loop.
- * for(TUint i = 0; i < 64; ++i)
- * {
- * if(i >= 16)
- * {
- * iData[i] = SHA256_sigma1(iData[i-2]) + iData[i-7] + SHA256_sigma0(iData[i-15]) + iData[i-16];
- * }
- *
- * temp1 = tempH + SHA256_SIGMA1(tempE) + SHA_Ch(tempE,tempF,tempG) + K[i] + iData[i];
- * temp2 = SHA256_SIGMA0(tempA) + SHA_Maj(tempA,tempB,tempC);
- * tempH = tempG;
- * tempG = tempF;
- * tempF = tempE;
- * tempE = tempD + temp1;
- * tempD = tempC;
- * tempC = tempB;
- * tempB = tempA;
- * tempA = temp1 + temp2;
- * }
- */
-void CSHA224And256::Block()
- {
- TUint tempA=iA;
- TUint tempB=iB;
- TUint tempC=iC;
- TUint tempD=iD;
- TUint tempE=iE;
- TUint tempF=iF;
- TUint tempG=iG;
- TUint tempH=iH;
- TUint temp1=0;
- TUint temp2=0;
-
- CSHA256_16(tempA,tempB,tempC,tempD,tempE,tempF,tempG,tempH,temp1,temp2,K[0],iData[0]);
- CSHA256_16(tempH,tempA,tempB,tempC,tempD,tempE,tempF,tempG,temp1,temp2,K[1],iData[1]);
- CSHA256_16(tempG,tempH,tempA,tempB,tempC,tempD,tempE,tempF,temp1,temp2,K[2],iData[2]);
- CSHA256_16(tempF,tempG,tempH,tempA,tempB,tempC,tempD,tempE,temp1,temp2,K[3],iData[3]);
- CSHA256_16(tempE,tempF,tempG,tempH,tempA,tempB,tempC,tempD,temp1,temp2,K[4],iData[4]);
- CSHA256_16(tempD,tempE,tempF,tempG,tempH,tempA,tempB,tempC,temp1,temp2,K[5],iData[5]);
- CSHA256_16(tempC,tempD,tempE,tempF,tempG,tempH,tempA,tempB,temp1,temp2,K[6],iData[6]);
- CSHA256_16(tempB,tempC,tempD,tempE,tempF,tempG,tempH,tempA,temp1,temp2,K[7],iData[7]);
-
- CSHA256_16(tempA,tempB,tempC,tempD,tempE,tempF,tempG,tempH,temp1,temp2,K[8],iData[8]);
- CSHA256_16(tempH,tempA,tempB,tempC,tempD,tempE,tempF,tempG,temp1,temp2,K[9],iData[9]);
- CSHA256_16(tempG,tempH,tempA,tempB,tempC,tempD,tempE,tempF,temp1,temp2,K[10],iData[10]);
- CSHA256_16(tempF,tempG,tempH,tempA,tempB,tempC,tempD,tempE,temp1,temp2,K[11],iData[11]);
- CSHA256_16(tempE,tempF,tempG,tempH,tempA,tempB,tempC,tempD,temp1,temp2,K[12],iData[12]);
- CSHA256_16(tempD,tempE,tempF,tempG,tempH,tempA,tempB,tempC,temp1,temp2,K[13],iData[13]);
- CSHA256_16(tempC,tempD,tempE,tempF,tempG,tempH,tempA,tempB,temp1,temp2,K[14],iData[14]);
- CSHA256_16(tempB,tempC,tempD,tempE,tempF,tempG,tempH,tempA,temp1,temp2,K[15],iData[15]);
-
- CSHA256_48( tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,
- K[16], iData[16], iData[14], iData[9], iData[1], iData[0]);
- CSHA256_48( tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,
- K[17], iData[17], iData[15], iData[10], iData[2], iData[1]);
- CSHA256_48( tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,
- K[18], iData[18], iData[16], iData[11], iData[3], iData[2]);
- CSHA256_48( tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,
- K[19], iData[19], iData[17], iData[12], iData[4], iData[3]);
- CSHA256_48( tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,
- K[20], iData[20], iData[18], iData[13], iData[5], iData[4]);
- CSHA256_48( tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,
- K[21], iData[21], iData[19], iData[14], iData[6], iData[5]);
- CSHA256_48( tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,
- K[22], iData[22], iData[20], iData[15], iData[7], iData[6]);
- CSHA256_48( tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,
- K[23], iData[23], iData[21], iData[16], iData[8], iData[7]);
-
- CSHA256_48( tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,
- K[24], iData[24], iData[22], iData[17], iData[9], iData[8]);
- CSHA256_48( tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,
- K[25], iData[25], iData[23], iData[18], iData[10], iData[9]);
- CSHA256_48( tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,
- K[26], iData[26], iData[24], iData[19], iData[11], iData[10]);
- CSHA256_48( tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,
- K[27], iData[27], iData[25], iData[20], iData[12], iData[11]);
- CSHA256_48( tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,
- K[28], iData[28], iData[26], iData[21], iData[13], iData[12]);
- CSHA256_48( tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,
- K[29], iData[29], iData[27], iData[22], iData[14], iData[13]);
- CSHA256_48( tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,
- K[30], iData[30], iData[28], iData[23], iData[15], iData[14]);
- CSHA256_48( tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,
- K[31], iData[31], iData[29], iData[24], iData[16], iData[15]);
-
- CSHA256_48( tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,
- K[32], iData[32], iData[30], iData[25], iData[17], iData[16]);
- CSHA256_48( tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,
- K[33], iData[33], iData[31], iData[26], iData[18], iData[17]);
- CSHA256_48( tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,
- K[34], iData[34], iData[32], iData[27], iData[19], iData[18]);
- CSHA256_48( tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,
- K[35], iData[35], iData[33], iData[28], iData[20], iData[19]);
- CSHA256_48( tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,
- K[36], iData[36], iData[34], iData[29], iData[21], iData[20]);
- CSHA256_48( tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,
- K[37], iData[37], iData[35], iData[30], iData[22], iData[21]);
- CSHA256_48( tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,
- K[38], iData[38], iData[36], iData[31], iData[23], iData[22]);
- CSHA256_48( tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,
- K[39], iData[39], iData[37], iData[32], iData[24], iData[23]);
-
- CSHA256_48( tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,
- K[40], iData[40], iData[38], iData[33], iData[25], iData[24]);
- CSHA256_48( tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,
- K[41], iData[41], iData[39], iData[34], iData[26], iData[25]);
- CSHA256_48( tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,
- K[42], iData[42], iData[40], iData[35], iData[27], iData[26]);
- CSHA256_48( tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,
- K[43], iData[43], iData[41], iData[36], iData[28], iData[27]);
- CSHA256_48( tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,
- K[44], iData[44], iData[42], iData[37], iData[29], iData[28]);
- CSHA256_48( tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,
- K[45], iData[45], iData[43], iData[38], iData[30], iData[29]);
- CSHA256_48( tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,
- K[46], iData[46], iData[44], iData[39], iData[31], iData[30]);
- CSHA256_48( tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,
- K[47], iData[47], iData[45], iData[40], iData[32], iData[31]);
-
- CSHA256_48( tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,
- K[48], iData[48], iData[46], iData[41], iData[33], iData[32]);
- CSHA256_48( tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,
- K[49], iData[49], iData[47], iData[42], iData[34], iData[33]);
- CSHA256_48( tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,
- K[50], iData[50], iData[48], iData[43], iData[35], iData[34]);
- CSHA256_48( tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,
- K[51], iData[51], iData[49], iData[44], iData[36], iData[35]);
- CSHA256_48( tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,
- K[52], iData[52], iData[50], iData[45], iData[37], iData[36]);
- CSHA256_48( tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,
- K[53], iData[53], iData[51], iData[46], iData[38], iData[37]);
- CSHA256_48( tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,
- K[54], iData[54], iData[52], iData[47], iData[39], iData[38]);
- CSHA256_48( tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,
- K[55], iData[55], iData[53], iData[48], iData[40], iData[39]);
-
- CSHA256_48( tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,
- K[56], iData[56], iData[54], iData[49], iData[41], iData[40]);
- CSHA256_48( tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,
- K[57], iData[57], iData[55], iData[50], iData[42], iData[41]);
- CSHA256_48( tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,
- K[58], iData[58], iData[56], iData[51], iData[43], iData[42]);
- CSHA256_48( tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,
- K[59], iData[59], iData[57], iData[52], iData[44], iData[43]);
- CSHA256_48( tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,
- K[60], iData[60], iData[58], iData[53], iData[45], iData[44]);
- CSHA256_48( tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,
- K[61], iData[61], iData[59], iData[54], iData[46], iData[45]);
- CSHA256_48( tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,
- K[62], iData[62], iData[60], iData[55], iData[47], iData[46]);
- CSHA256_48( tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,
- K[63], iData[63], iData[61], iData[56], iData[48], iData[47]);
-
- iA+=tempA;
- iB+=tempB;
- iC+=tempC;
- iD+=tempD;
- iE+=tempE;
- iF+=tempF;
- iG+=tempG;
- iH+=tempH;
-
- iNl=0;
- }
-
-/**
- * According to the standard, the message must be padded to an
- * even 512 bits. The first padding bit must be a '1'. The last
- * 64 bits represent the length of the original message. All bits
- * in between should be 0. This helper function will pad the
- * message according to those rules by filling the iData array
- * accordingly.
- */
-void CSHA224And256::PadMessage()
- {
- const TUint padByte = 0x80;
-
- if(!(iNl&0x03))
- {
- iData[iNl >> 2] = 0;
- }
- iData[iNl >> 2] |= padByte << ((3 - iNl&0x03) << 3) ;
-
- if (iNl >= (KSHA256BlockSize - 2*sizeof(TUint)))
- {
- if (iNl < (KSHA256BlockSize - sizeof(TUint)))
- iData[(KSHA256BlockSize >> 2) - 1]=0;
- Block();
- Mem::FillZ(iData, KSHA256BlockSize);
- }
- else
- {
- const TUint offset=(iNl+4)>>2; //+4 to account for the word added in the
- //switch statement above
- Mem::FillZ(iData+offset,(KSHA256BlockSize - offset*sizeof(TUint)));
- }
-
- //Length in bits
- TUint64 msgLength = iNh;
-
- iData[(KSHA256BlockSize >> 2) - 2] = (msgLength) >> 32;
- iData[(KSHA256BlockSize >> 2) - 1] = (msgLength & 0xFFFFFFFF);
- }
-
-inline void CSHA224And256::CopyWordToHash(TUint aVal, TUint aIndex)
- {
- TUint value = MakeWord(reinterpret_cast<TUint8*>(&aVal));
- Mem::Copy(const_cast<TUint8*>(iHash.Ptr())+ (4*aIndex), &value, sizeof(aVal));
- }
-
-const TDes8& CSHA224And256::Final()
- {
- AddLength(iNl);
- PadMessage();
- Block();
- //
- // Generate hash value into iHash
- //
- CopyWordToHash(iA, 0);
- CopyWordToHash(iB, 1);
- CopyWordToHash(iC, 2);
- CopyWordToHash(iD, 3);
- CopyWordToHash(iE, 4);
- CopyWordToHash(iF, 5);
- CopyWordToHash(iG, 6);
- CopyWordToHash(iH, 7);
-
- return iHash;
- }
-
-void CSHA224And256::RestoreState()
- {
- iA = iACopy;
- iB = iBCopy;
- iC = iCCopy;
- iD = iDCopy;
- iE = iECopy;
- iF = iFCopy;
- iG = iGCopy;
- iH = iHCopy;
- iNl = iNlCopy;
- iNh = iNhCopy;
- Mem::Copy(iData, iDataCopy, KSHA256BlockSize*sizeof(TUint));
- }
-
-void CSHA224And256::StoreState()
- {
- iACopy = iA;
- iBCopy = iB;
- iCCopy = iC;
- iDCopy = iD;
- iECopy = iE;
- iFCopy = iF;
- iGCopy = iG;
- iHCopy = iH;
- iNlCopy = iNl;
- iNhCopy = iNh;
- Mem::Copy(iDataCopy, iData, KSHA256BlockSize*sizeof(TUint));
- }
-
-// 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
-