Symaptic: os/security/cryptoplugins/cryptospiplugins/source/softwarecrypto/sha384and512impl.cpp@bde4ae8d615e

     1 /*

     2 * Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 * Common implementation of SHA384 and SHA512

    16 * RFC 4634 (US Secure Hash Algorithms (SHA and HMAC-SHA))

    17 *

    18 */

    21 /**

    22  @file

    23 */

    25 #include <cryptospi/hashplugin.h>

    26 #include "sha384and512impl.h"

    27 #include "pluginconfig.h"

    29 /**

    30  * SHA512 Constants

    31  *

    32  * SHA-512 uses a sequence of eighty constant 64-bit words.

    33  * These words represent the first sixty-four bits of the fractional

    34  * parts of the cube roots of the first eighty prime numbers.

    35  *

    36  * FIPS 180-2 Section 4.2.3

    37  */

    38 const TUint64 K[80] =

    39 	{

    40 	UI64LIT(0x428a2f98d728ae22), UI64LIT(0x7137449123ef65cd), UI64LIT(0xb5c0fbcfec4d3b2f), UI64LIT(0xe9b5dba58189dbbc),

    41 	UI64LIT(0x3956c25bf348b538), UI64LIT(0x59f111f1b605d019), UI64LIT(0x923f82a4af194f9b), UI64LIT(0xab1c5ed5da6d8118),

    42 	UI64LIT(0xd807aa98a3030242), UI64LIT(0x12835b0145706fbe), UI64LIT(0x243185be4ee4b28c), UI64LIT(0x550c7dc3d5ffb4e2),

    43 	UI64LIT(0x72be5d74f27b896f), UI64LIT(0x80deb1fe3b1696b1), UI64LIT(0x9bdc06a725c71235), UI64LIT(0xc19bf174cf692694),

    44 	UI64LIT(0xe49b69c19ef14ad2), UI64LIT(0xefbe4786384f25e3), UI64LIT(0x0fc19dc68b8cd5b5), UI64LIT(0x240ca1cc77ac9c65),

    45 	UI64LIT(0x2de92c6f592b0275), UI64LIT(0x4a7484aa6ea6e483), UI64LIT(0x5cb0a9dcbd41fbd4), UI64LIT(0x76f988da831153b5),

    46 	UI64LIT(0x983e5152ee66dfab), UI64LIT(0xa831c66d2db43210), UI64LIT(0xb00327c898fb213f), UI64LIT(0xbf597fc7beef0ee4),

    47 	UI64LIT(0xc6e00bf33da88fc2), UI64LIT(0xd5a79147930aa725), UI64LIT(0x06ca6351e003826f), UI64LIT(0x142929670a0e6e70),

    48 	UI64LIT(0x27b70a8546d22ffc), UI64LIT(0x2e1b21385c26c926), UI64LIT(0x4d2c6dfc5ac42aed), UI64LIT(0x53380d139d95b3df),

    49 	UI64LIT(0x650a73548baf63de), UI64LIT(0x766a0abb3c77b2a8), UI64LIT(0x81c2c92e47edaee6), UI64LIT(0x92722c851482353b),

    50 	UI64LIT(0xa2bfe8a14cf10364), UI64LIT(0xa81a664bbc423001), UI64LIT(0xc24b8b70d0f89791), UI64LIT(0xc76c51a30654be30),

    51 	UI64LIT(0xd192e819d6ef5218), UI64LIT(0xd69906245565a910), UI64LIT(0xf40e35855771202a), UI64LIT(0x106aa07032bbd1b8),

    52 	UI64LIT(0x19a4c116b8d2d0c8), UI64LIT(0x1e376c085141ab53), UI64LIT(0x2748774cdf8eeb99), UI64LIT(0x34b0bcb5e19b48a8),

    53 	UI64LIT(0x391c0cb3c5c95a63), UI64LIT(0x4ed8aa4ae3418acb), UI64LIT(0x5b9cca4f7763e373), UI64LIT(0x682e6ff3d6b2b8a3),

    54 	UI64LIT(0x748f82ee5defb2fc), UI64LIT(0x78a5636f43172f60), UI64LIT(0x84c87814a1f0ab72), UI64LIT(0x8cc702081a6439ec),

    55 	UI64LIT(0x90befffa23631e28), UI64LIT(0xa4506cebde82bde9), UI64LIT(0xbef9a3f7b2c67915), UI64LIT(0xc67178f2e372532b),

    56 	UI64LIT(0xca273eceea26619c), UI64LIT(0xd186b8c721c0c207), UI64LIT(0xeada7dd6cde0eb1e), UI64LIT(0xf57d4f7fee6ed178),

    57 	UI64LIT(0x06f067aa72176fba), UI64LIT(0x0a637dc5a2c898a6), UI64LIT(0x113f9804bef90dae), UI64LIT(0x1b710b35131c471b),

    58 	UI64LIT(0x28db77f523047d84), UI64LIT(0x32caab7b40c72493), UI64LIT(0x3c9ebe0a15c9bebc), UI64LIT(0x431d67c49c100d4c),

    59 	UI64LIT(0x4cc5d4becb3e42b6), UI64LIT(0x597f299cfc657e2a), UI64LIT(0x5fcb6fab3ad6faec), UI64LIT(0x6c44198c4a475817)

    60 	};

    62 /**

    63  * Define the SHA SIGMA and sigma macros

    64  *

    65  * FIPS 180-2 section 4.1.3

    66  */

    67 // Equation 4.10

    68 inline TUint64 SHA512_SIGMA0(TUint64 aWord)

    69 	{

    70 	return (SHA_ROTR<TUint64>(28,aWord) ^ SHA_ROTR<TUint64>(34,aWord) ^ SHA_ROTR<TUint64>(39,aWord));

    71 	}

    72 // Equation 4.11

    73 inline TUint64 SHA512_SIGMA1(TUint64 aWord)

    74 	{

    75 	return (SHA_ROTR<TUint64>(14,aWord) ^ SHA_ROTR<TUint64>(18,aWord) ^ SHA_ROTR<TUint64>(41,aWord));

    76 	}

    77 // Equation 4.12

    78 inline TUint64 SHA512_sigma0(TUint64 aWord)

    79 	{

    80 	return (SHA_ROTR<TUint64>(1, aWord) ^ SHA_ROTR<TUint64>(8, aWord) ^ SHA_SHR<TUint64>(7, aWord));

    81 	}

    82 // Equation 4.13

    83 inline TUint64 SHA512_sigma1(TUint64 aWord)

    84 	{

    85 	return (SHA_ROTR<TUint64>(19,aWord) ^ SHA_ROTR<TUint64>(61,aWord) ^ SHA_SHR<TUint64>(6,aWord));

    86 	}

    88 // Macros

    89 inline TUint64 Make64BitWord(const TUint8* aData)

    90 	{

    91 	TUint64 result = (TUint64)aData[0] << 56 | (TUint64)aData[1] << 48 | (TUint64)aData[2] << 40 |

    92 					 (TUint64)aData[3] << 32 | (TUint64)aData[4] << 24 | (TUint64)aData[5] << 16 |

    93 					 (TUint64)aData[6] << 8 | (TUint64)aData[7];

    94 	return result;

    95 	}

    98 using namespace SoftwareCrypto;

   100 CSHA384And512Impl* CSHA384And512Impl::NewL(TInt aHashSize)

   101 	{

   102 	CSHA384And512Impl* self=new (ELeave) CSHA384And512Impl(aHashSize);

   103 	return self;

   104 	}

   106 CSHA384And512Impl::CSHA384And512Impl(TInt aHashSize) : iHash(aHashSize)

   107 	{

   108 	}

   110 CSHA384And512Impl::CSHA384And512Impl(const CSHA384And512Impl& aSHA512Impl)

   111 				: 	iHash(aSHA512Impl.iHash),

   112 					iA(aSHA512Impl.iA),

   113 					iB(aSHA512Impl.iB),

   114 					iC(aSHA512Impl.iC),

   115 					iD(aSHA512Impl.iD),

   116 					iE(aSHA512Impl.iE),

   117 					iF(aSHA512Impl.iF),

   118 					iG(aSHA512Impl.iG),

   119 					iH(aSHA512Impl.iH),

   120 					iNl(aSHA512Impl.iNl),

   121 					iNh(aSHA512Impl.iNh),

   122 					iBlockIndex(aSHA512Impl.iBlockIndex)

   123 	{

   124 	Mem::Copy(iData, aSHA512Impl.iData, KSHA512BlockSize*sizeof(TUint64));

   125 	}

   127 void CSHA384And512Impl::Reset(const TAny* aValueArr)

   128 	{

   129 	const TUint64* values = static_cast<const TUint64*>(aValueArr);

   130 	/**

   131 	 * Initial Hash Value

   132 	 *

   133 	 * These words were obtained by taking the first thirty-two bits

   134 	 * of the fractional parts of the square roots of the first eight

   135 	 * prime numbers.

   136 	 *

   137 	 * FIPS 180-2 Section 5.3.2

   138 	 */

   139 	iA = values[0];

   140 	iB = values[1];

   141 	iC = values[2];

   142 	iD = values[3];

   143 	iE = values[4];

   144 	iF = values[5];

   145 	iG = values[6];

   146 	iH = values[7];

   147 	iNh = 0;

   148 	iNl = 0;

   149 	iBlockIndex = 0;

   150 	}

   152 //This function will panic if the total input length is longer than 2^128 in bits

   153 _LIT(KPanicString, "Message length exceeds supported length");

   154 inline void CSHA384And512Impl::AddLength(const TUint64 aLength)

   155 	{

   156 	TUint64 temp = iNl;

   157 	iNl += aLength << 3;

   158 	__ASSERT_ALWAYS(((iNh != KMaxTUint64) || (temp <= iNl)), User::Panic(KPanicString, KErrOverflow));

   159 	iNh += (temp > iNl);

   160 	}

   162 // This assumes a big-endian architecture

   163 void CSHA384And512Impl::Update(const TUint8* aData,TUint aLength)

   164 	{

   165 	while((aLength / 8) > 0 && (iBlockIndex % 8 == 0))

   166 		{

   167 		iData[iBlockIndex>>3] = Make64BitWord(aData);

   168 		iBlockIndex+=8;

   169 		aData+=8;

   170 		aLength-=8;

   171 		if(iBlockIndex==KSHA512BlockSize)

   172 			{

   173 			Block();

   174 			AddLength(KSHA512BlockSize);

   175 			}

   176 		}

   178 	while(aLength--)

   179 		{

   180 		if(!(iBlockIndex&0x07))

   181 			{

   182 			iData[iBlockIndex >> 3] = 0;

   183 			}

   184 		iData[iBlockIndex >> 3] |= static_cast<TUint64>(*aData) << ((7 - iBlockIndex&0x07) << 3) ;

   185 		++aData;

   186 		++iBlockIndex;

   187 		if(iBlockIndex==KSHA512BlockSize)

   188 			{

   189 			Block();

   190 			AddLength(KSHA512BlockSize);

   191 			}

   192 		}

   193 	}

   195 static inline void CSHA512_16(	const TUint64 aA,

   196 								const TUint64 aB,

   197 								const TUint64 aC,

   198 								TUint64& aD,

   199 								const TUint64 aE,

   200 								const TUint64 aF,

   201 								const TUint64 aG,

   202 								TUint64& aH,

   203 								TUint64 aTemp1,

   204 								TUint64 aTemp2,

   205 								const TUint64 aK,

   206 								const TUint64 aWord)

   207 	{

   208 	aTemp1 = aH + SHA512_SIGMA1(aE) + SHA_Ch(aE,aF,aG) + aK + aWord;

   209 	aTemp2 = SHA512_SIGMA0(aA) + SHA_Maj(aA,aB,aC);

   210 	aD = aD + aTemp1;

   211 	aH = aTemp1 + aTemp2;

   212 	}

   214 static inline void CSHA512_64(	const TUint64 aA,

   215 								const TUint64 aB,

   216 								const TUint64 aC,

   217 								TUint64& aD,

   218 								const TUint64 aE,

   219 								const TUint64 aF,

   220 								const TUint64 aG,

   221 								TUint64& aH,

   222 								TUint64 aTemp1,

   223 								TUint64 aTemp2,

   224 								const TUint64 aK,

   225 								TUint64& aWord0,

   226 								const TUint64 aWord2,

   227 								const TUint64 aWord7,

   228 								const TUint64 aWord15,

   229 								const TUint64 aWord16)

   230 	{

   231 	aWord0 = SHA512_sigma1(aWord2) + aWord7 + SHA512_sigma0(aWord15) + aWord16;

   232 	CSHA512_16(aA, aB, aC, aD, aE, aF, aG, aH, aTemp1, aTemp2, aK, aWord0);

   233 	}

   235 /**

   236  * This function actually calculates the hash.

   237  * Function is defined in FIPS 180-2 section 6.3.2

   238  *

   239  * This function is the expanded version of the following loop.

   240  *	for(TUint i = 0; i < 80; ++i)

   241  *		{

   242  *		if(i >= 16)

   243  *			{

   244  *			iData[i] = SHA512_sigma1(iData[i-2]) + iData[i-7] + SHA512_sigma0(iData[i-15]) + iData[i-16];

   245  *			}

   246  *

   247  *		temp1 = tempH + SHA512_SIGMA1(tempE) + SHA_Ch(tempE,tempF,tempG) + K[i] + iData[i];

   248  *	    temp2 = SHA512_SIGMA0(tempA) + SHA_Maj(tempA,tempB,tempC);

   249  *	    tempH = tempG;

   250  *	    tempG = tempF;

   251  *	    tempF = tempE;

   252  *	    tempE = tempD + temp1;

   253  *	    tempD = tempC;

   254  *	    tempC = tempB;

   255  *	    tempB = tempA;

   256  *	    tempA = temp1 + temp2;

   257  *		}

   258  */

   259 void CSHA384And512Impl::Block()

   260 	{

   261 	TUint64 tempA=iA;

   262 	TUint64 tempB=iB;

   263 	TUint64 tempC=iC;

   264 	TUint64 tempD=iD;

   265 	TUint64 tempE=iE;

   266 	TUint64 tempF=iF;

   267 	TUint64 tempG=iG;

   268 	TUint64 tempH=iH;

   269 	TUint64 temp1=0;

   270 	TUint64 temp2=0;

   272 	CSHA512_16(tempA,tempB,tempC,tempD,tempE,tempF,tempG,tempH,temp1,temp2,K[0],iData[0]);

   273 	CSHA512_16(tempH,tempA,tempB,tempC,tempD,tempE,tempF,tempG,temp1,temp2,K[1],iData[1]);

   274 	CSHA512_16(tempG,tempH,tempA,tempB,tempC,tempD,tempE,tempF,temp1,temp2,K[2],iData[2]);

   275 	CSHA512_16(tempF,tempG,tempH,tempA,tempB,tempC,tempD,tempE,temp1,temp2,K[3],iData[3]);

   276 	CSHA512_16(tempE,tempF,tempG,tempH,tempA,tempB,tempC,tempD,temp1,temp2,K[4],iData[4]);

   277 	CSHA512_16(tempD,tempE,tempF,tempG,tempH,tempA,tempB,tempC,temp1,temp2,K[5],iData[5]);

   278 	CSHA512_16(tempC,tempD,tempE,tempF,tempG,tempH,tempA,tempB,temp1,temp2,K[6],iData[6]);

   279 	CSHA512_16(tempB,tempC,tempD,tempE,tempF,tempG,tempH,tempA,temp1,temp2,K[7],iData[7]);

   281 	CSHA512_16(tempA,tempB,tempC,tempD,tempE,tempF,tempG,tempH,temp1,temp2,K[8],iData[8]);

   282 	CSHA512_16(tempH,tempA,tempB,tempC,tempD,tempE,tempF,tempG,temp1,temp2,K[9],iData[9]);

   283 	CSHA512_16(tempG,tempH,tempA,tempB,tempC,tempD,tempE,tempF,temp1,temp2,K[10],iData[10]);

   284 	CSHA512_16(tempF,tempG,tempH,tempA,tempB,tempC,tempD,tempE,temp1,temp2,K[11],iData[11]);

   285 	CSHA512_16(tempE,tempF,tempG,tempH,tempA,tempB,tempC,tempD,temp1,temp2,K[12],iData[12]);

   286 	CSHA512_16(tempD,tempE,tempF,tempG,tempH,tempA,tempB,tempC,temp1,temp2,K[13],iData[13]);

   287 	CSHA512_16(tempC,tempD,tempE,tempF,tempG,tempH,tempA,tempB,temp1,temp2,K[14],iData[14]);

   288 	CSHA512_16(tempB,tempC,tempD,tempE,tempF,tempG,tempH,tempA,temp1,temp2,K[15],iData[15]);

   290 	CSHA512_64(	tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,

   291 				K[16], iData[16], iData[14], iData[9], iData[1], iData[0]);

   292 	CSHA512_64(	tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,

   293 				K[17], iData[17], iData[15], iData[10], iData[2], iData[1]);

   294 	CSHA512_64(	tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,

   295 				K[18], iData[18], iData[16], iData[11], iData[3], iData[2]);

   296 	CSHA512_64(	tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,

   297 				K[19], iData[19], iData[17], iData[12], iData[4], iData[3]);

   298 	CSHA512_64(	tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,

   299 				K[20], iData[20], iData[18], iData[13], iData[5], iData[4]);

   300 	CSHA512_64(	tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,

   301 				K[21], iData[21], iData[19], iData[14], iData[6], iData[5]);

   302 	CSHA512_64(	tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,

   303 				K[22], iData[22], iData[20], iData[15], iData[7], iData[6]);

   304 	CSHA512_64(	tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,

   305 				K[23], iData[23], iData[21], iData[16], iData[8], iData[7]);

   307 	CSHA512_64(	tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,

   308 				K[24], iData[24], iData[22], iData[17], iData[9], iData[8]);

   309 	CSHA512_64(	tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,

   310 				K[25], iData[25], iData[23], iData[18], iData[10], iData[9]);

   311 	CSHA512_64(	tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,

   312 				K[26], iData[26], iData[24], iData[19], iData[11], iData[10]);

   313 	CSHA512_64(	tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,

   314 				K[27], iData[27], iData[25], iData[20], iData[12], iData[11]);

   315 	CSHA512_64(	tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,

   316 				K[28], iData[28], iData[26], iData[21], iData[13], iData[12]);

   317 	CSHA512_64(	tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,

   318 				K[29], iData[29], iData[27], iData[22], iData[14], iData[13]);

   319 	CSHA512_64(	tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,

   320 				K[30], iData[30], iData[28], iData[23], iData[15], iData[14]);

   321 	CSHA512_64(	tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,

   322 				K[31], iData[31], iData[29], iData[24], iData[16], iData[15]);

   324 	CSHA512_64(	tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,

   325 				K[32], iData[32], iData[30], iData[25], iData[17], iData[16]);

   326 	CSHA512_64(	tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,

   327 				K[33], iData[33], iData[31], iData[26], iData[18], iData[17]);

   328 	CSHA512_64(	tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,

   329 				K[34], iData[34], iData[32], iData[27], iData[19], iData[18]);

   330 	CSHA512_64(	tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,

   331 				K[35], iData[35], iData[33], iData[28], iData[20], iData[19]);

   332 	CSHA512_64(	tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,

   333 				K[36], iData[36], iData[34], iData[29], iData[21], iData[20]);

   334 	CSHA512_64(	tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,

   335 				K[37], iData[37], iData[35], iData[30], iData[22], iData[21]);

   336 	CSHA512_64(	tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,

   337 				K[38], iData[38], iData[36], iData[31], iData[23], iData[22]);

   338 	CSHA512_64(	tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,

   339 				K[39], iData[39], iData[37], iData[32], iData[24], iData[23]);

   341 	CSHA512_64(	tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,

   342 				K[40], iData[40], iData[38], iData[33], iData[25], iData[24]);

   343 	CSHA512_64(	tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,

   344 				K[41], iData[41], iData[39], iData[34], iData[26], iData[25]);

   345 	CSHA512_64(	tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,

   346 				K[42], iData[42], iData[40], iData[35], iData[27], iData[26]);

   347 	CSHA512_64(	tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,

   348 				K[43], iData[43], iData[41], iData[36], iData[28], iData[27]);

   349 	CSHA512_64(	tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,

   350 				K[44], iData[44], iData[42], iData[37], iData[29], iData[28]);

   351 	CSHA512_64(	tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,

   352 				K[45], iData[45], iData[43], iData[38], iData[30], iData[29]);

   353 	CSHA512_64(	tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,

   354 				K[46], iData[46], iData[44], iData[39], iData[31], iData[30]);

   355 	CSHA512_64(	tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,

   356 				K[47], iData[47], iData[45], iData[40], iData[32], iData[31]);

   358 	CSHA512_64(	tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,

   359 				K[48], iData[48], iData[46], iData[41], iData[33], iData[32]);

   360 	CSHA512_64(	tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,

   361 				K[49], iData[49], iData[47], iData[42], iData[34], iData[33]);

   362 	CSHA512_64(	tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,

   363 				K[50], iData[50], iData[48], iData[43], iData[35], iData[34]);

   364 	CSHA512_64(	tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,

   365 				K[51], iData[51], iData[49], iData[44], iData[36], iData[35]);

   366 	CSHA512_64(	tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,

   367 				K[52], iData[52], iData[50], iData[45], iData[37], iData[36]);

   368 	CSHA512_64(	tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,

   369 				K[53], iData[53], iData[51], iData[46], iData[38], iData[37]);

   370 	CSHA512_64(	tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,

   371 				K[54], iData[54], iData[52], iData[47], iData[39], iData[38]);

   372 	CSHA512_64(	tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,

   373 				K[55], iData[55], iData[53], iData[48], iData[40], iData[39]);

   375 	CSHA512_64(	tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,

   376 				K[56], iData[56], iData[54], iData[49], iData[41], iData[40]);

   377 	CSHA512_64(	tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,

   378 				K[57], iData[57], iData[55], iData[50], iData[42], iData[41]);

   379 	CSHA512_64(	tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,

   380 				K[58], iData[58], iData[56], iData[51], iData[43], iData[42]);

   381 	CSHA512_64(	tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,

   382 				K[59], iData[59], iData[57], iData[52], iData[44], iData[43]);

   383 	CSHA512_64(	tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,

   384 				K[60], iData[60], iData[58], iData[53], iData[45], iData[44]);

   385 	CSHA512_64(	tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,

   386 				K[61], iData[61], iData[59], iData[54], iData[46], iData[45]);

   387 	CSHA512_64(	tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,

   388 				K[62], iData[62], iData[60], iData[55], iData[47], iData[46]);

   389 	CSHA512_64(	tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,

   390 				K[63], iData[63], iData[61], iData[56], iData[48], iData[47]);

   392 	CSHA512_64(	tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,

   393 				K[64], iData[64], iData[62], iData[57], iData[49], iData[48]);

   394 	CSHA512_64(	tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,

   395 				K[65], iData[65], iData[63], iData[58], iData[50], iData[49]);

   396 	CSHA512_64(	tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,

   397 				K[66], iData[66], iData[64], iData[59], iData[51], iData[50]);

   398 	CSHA512_64(	tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,

   399 				K[67], iData[67], iData[65], iData[60], iData[52], iData[51]);

   400 	CSHA512_64(	tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,

   401 				K[68], iData[68], iData[66], iData[61], iData[53], iData[52]);

   402 	CSHA512_64(	tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,

   403 				K[69], iData[69], iData[67], iData[62], iData[54], iData[53]);

   404 	CSHA512_64(	tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,

   405 				K[70], iData[70], iData[68], iData[63], iData[55], iData[54]);

   406 	CSHA512_64(	tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,

   407 				K[71], iData[71], iData[69], iData[64], iData[56], iData[55]);

   409 	CSHA512_64(	tempA, tempB, tempC, tempD, tempE, tempF, tempG, tempH, temp1, temp2,

   410 				K[72], iData[72], iData[70], iData[65], iData[57], iData[56]);

   411 	CSHA512_64(	tempH, tempA, tempB, tempC, tempD, tempE, tempF, tempG, temp1, temp2,

   412 				K[73], iData[73], iData[71], iData[66], iData[58], iData[57]);

   413 	CSHA512_64(	tempG, tempH, tempA, tempB, tempC, tempD, tempE, tempF, temp1, temp2,

   414 				K[74], iData[74], iData[72], iData[67], iData[59], iData[58]);

   415 	CSHA512_64(	tempF, tempG, tempH, tempA, tempB, tempC, tempD, tempE, temp1, temp2,

   416 				K[75], iData[75], iData[73], iData[68], iData[60], iData[59]);

   417 	CSHA512_64(	tempE, tempF, tempG, tempH, tempA, tempB, tempC, tempD, temp1, temp2,

   418 				K[76], iData[76], iData[74], iData[69], iData[61], iData[60]);

   419 	CSHA512_64(	tempD, tempE, tempF, tempG, tempH, tempA, tempB, tempC, temp1, temp2,

   420 				K[77], iData[77], iData[75], iData[70], iData[62], iData[61]);

   421 	CSHA512_64(	tempC, tempD, tempE, tempF, tempG, tempH, tempA, tempB, temp1, temp2,

   422 				K[78], iData[78], iData[76], iData[71], iData[63], iData[62]);

   423 	CSHA512_64(	tempB, tempC, tempD, tempE, tempF, tempG, tempH, tempA, temp1, temp2,

   424 				K[79], iData[79], iData[77], iData[72], iData[64], iData[63]);

   426 	iA+=tempA;

   427 	iB+=tempB;

   428 	iC+=tempC;

   429 	iD+=tempD;

   430 	iE+=tempE;

   431 	iF+=tempF;

   432 	iG+=tempG;

   433 	iH+=tempH;

   435 	iBlockIndex=0;

   436 	}

   438 /**

   439  * According to the standard, the message must be padded to an

   440  * even 512 bits. The first padding bit must be a '1'. The last

   441  * 64 bits represent the length of the original message. All bits

   442  * in between should be 0. This helper function will pad the

   443  * message according to those rules by filling the iData array

   444  * accordingly.

   445  */

   446 void CSHA384And512Impl::PadMessage()

   447 	{

   448 	const TUint64 padByte = 0x80;

   450 	if(!(iBlockIndex&0x07))

   451 		{

   452 		iData[iBlockIndex >> 3] = 0;

   453 		}

   454 	iData[iBlockIndex >> 3] |= padByte << ((7 - iBlockIndex&0x07) << 3) ;

   456 	if (iBlockIndex >= (KSHA512BlockSize - 2*sizeof(TUint64)))

   457 		{

   458 		if (iBlockIndex < (KSHA512BlockSize - sizeof(TUint64)))

   459 			iData[(KSHA512BlockSize>>3)-1]=0;

   460 		Block();

   461 		Mem::FillZ(iData,KSHA512BlockSize);

   462 		}

   463 	else

   464 		{

   465 		const TUint offset=(iBlockIndex+8)>>3; //+8 to account for the word added in the

   466 		//switch statement above

   467 		Mem::FillZ(iData+offset, (KSHA512BlockSize - offset*sizeof(TUint64)));

   468 		}

   470 	iData[(KSHA512BlockSize >> 3) - 2] = iNh;

   471 	iData[(KSHA512BlockSize >> 3) - 1] = iNl;

   472 	}

   474 inline void CSHA384And512Impl::CopyWordToHash(TUint64 aVal, TUint aIndex)

   475 	{

   476 	TUint64 value = Make64BitWord(reinterpret_cast<TUint8*>(&aVal));

   477 	Mem::Copy(const_cast<TUint8*>(iHash.Ptr())+ (8*aIndex), &value, sizeof(aVal));

   478 	}

   480 const TDesC8& CSHA384And512Impl::Final()

   481 	{

   482 	AddLength(iBlockIndex);

   483 	PadMessage();

   484 	Block();

   485 	//

   486 	// Generate hash value into iHash

   487 	//

   488 	CopyWordToHash(iA, 0);

   489 	CopyWordToHash(iB, 1);

   490 	CopyWordToHash(iC, 2);

   491 	CopyWordToHash(iD, 3);

   492 	CopyWordToHash(iE, 4);

   493 	CopyWordToHash(iF, 5);

   494 	CopyWordToHash(iG, 6);

   495 	CopyWordToHash(iH, 7);

   497 	return iHash;

   498 	}

   500 void CSHA384And512Impl::RestoreState()

   501 	{

   502 	iA = iACopy;

   503 	iB = iBCopy;

   504 	iC = iCCopy;

   505 	iD = iDCopy;

   506 	iE = iECopy;

   507 	iF = iFCopy;

   508 	iG = iGCopy;

   509 	iH = iHCopy;

   510 	iNl = iNlCopy;

   511 	iNh = iNhCopy;

   512 	iBlockIndex = iBlockIndexCopy;

   513 	Mem::Copy((TAny*)iData, (TAny*)iDataCopy, KSHA512BlockSize*sizeof(TUint64));

   514 	}

   516 void CSHA384And512Impl::StoreState()

   517 	{

   518 	iACopy = iA;

   519 	iBCopy = iB;

   520 	iCCopy = iC;

   521 	iDCopy = iD;

   522 	iECopy = iE;

   523 	iFCopy = iF;

   524 	iGCopy = iG;

   525 	iHCopy = iH;

   526 	iNlCopy = iNl;

   527 	iNhCopy = iNh;

   528 	iBlockIndexCopy = iBlockIndex;

   529 	Mem::Copy((TAny*)iDataCopy, (TAny*)iData, KSHA512BlockSize*sizeof(TUint64));

   530 	}

   532 // Implemented in hmacimpl.cpp or softwarehashbase.cpp

   533 // but required as derived from MHash. No coverage here.

   534 #ifdef _BullseyeCoverage

   535 #pragma suppress_warnings on

   536 #pragma BullseyeCoverage off

   537 #pragma suppress_warnings off

   538 #endif

author	sl@SLION-WIN7.fritz.box
	Fri, 15 Jun 2012 03:10:57 +0200
changeset 0	bde4ae8d615e
permissions	-rw-r--r--