--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/source/softwarecrypto/sha224and256impl.cpp Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,499 @@
+/*
+* 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 <cryptospi/hashplugin.h>
+#include "pluginconfig.h"
+#include "sha224and256impl.h"
+
+using namespace SoftwareCrypto;
+
+/**
+ * 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]);
+ }
+
+
+CSHA224And256Impl* CSHA224And256Impl::NewL()
+ {
+ CSHA224And256Impl* self=new (ELeave) CSHA224And256Impl();
+ return self;
+ }
+
+CSHA224And256Impl::CSHA224And256Impl() : iHash(KSHA256HashSize)
+ {
+ }
+
+CSHA224And256Impl::CSHA224And256Impl(const CSHA224And256Impl& aSHA256Impl)
+ : iHash(aSHA256Impl.iHash),
+ iA(aSHA256Impl.iA),
+ iB(aSHA256Impl.iB),
+ iC(aSHA256Impl.iC),
+ iD(aSHA256Impl.iD),
+ iE(aSHA256Impl.iE),
+ iF(aSHA256Impl.iF),
+ iG(aSHA256Impl.iG),
+ iH(aSHA256Impl.iH),
+ iNl(aSHA256Impl.iNl),
+ iNh(aSHA256Impl.iNh)
+ {
+ Mem::Copy(iData, aSHA256Impl.iData, KSHA256BlockSize*sizeof(TUint));
+ }
+
+void CSHA224And256Impl::Reset(const TAny* aValArray)
+ {
+ const TUint* values = static_cast<const TUint*>(aValArray);
+ /**
+ * Initial Hash Value
+ *
+ * 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
+ */
+ 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 CSHA224And256Impl::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 CSHA224And256Impl::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 CSHA224And256Impl::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 CSHA224And256Impl::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 CSHA224And256Impl::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& CSHA224And256Impl::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 CSHA224And256Impl::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 CSHA224And256Impl::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
+