diff -r 000000000000 -r 2c201484c85f crypto/weakcrypto/source/hash/sha224and256.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcrypto/source/hash/sha224and256.cpp	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,487 @@
+/*
+* 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