1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_bridges.hxx" 26 27 28 #ifndef TEST 29 #ifndef _SAL_TYPES_H_ 30 #include <sal/types.h> 31 #endif 32 #else 33 typedef unsigned int sal_uInt32; 34 #endif 35 36 #include <string.h> 37 38 /* 39 * build a hash for a character buffer using the NIST algorithm 40 */ 41 42 class NIST_Hash 43 { 44 45 // helper functions 46 sal_uInt32 f1( sal_uInt32 x, sal_uInt32 y, sal_uInt32 z ) 47 { 48 return z ^ ( x & ( y ^ z ) ); 49 } 50 51 sal_uInt32 f2( sal_uInt32 x, sal_uInt32 y, sal_uInt32 z ) 52 { 53 return x ^ y ^ z; 54 } 55 56 sal_uInt32 f3( sal_uInt32 x, sal_uInt32 y, sal_uInt32 z ) 57 { 58 return ( x & y ) + ( z & ( x ^ y ) ); 59 } 60 61 sal_uInt32 rotl( sal_uInt32 nValue, sal_uInt32 nBits ) 62 { 63 return ( nValue << nBits ) | ( nValue >> (32-nBits) ); 64 } 65 66 sal_uInt32 expand_nostore( sal_uInt32 index ) 67 { 68 return data[index&15] ^ data[(index-14)&15] ^ data[(index-8)&15] ^ data[(index-3)&15]; 69 } 70 71 sal_uInt32 expand_store( sal_uInt32 index ) 72 { 73 return data[index&15] ^= data[(index-14)&15] ^ data[(index-8)&15] ^ data[(index-3)&15]; 74 } 75 76 void subRound( sal_uInt32 a, sal_uInt32& b, sal_uInt32 c, sal_uInt32 d, sal_uInt32& e, sal_uInt32 constant, sal_uInt32 datum, sal_uInt32 nFunction ) 77 { 78 e += rotl(a,5); 79 switch( nFunction ) 80 { 81 case 1: e += f1( b, c, d );break; 82 case 2: 83 case 4: e += f2( b, c, d );break; 84 case 3: e += f3( b, c, d );break; 85 } 86 e += constant + datum; 87 b = rotl( b, 30 ); 88 } 89 90 void transform(); 91 void final(); 92 93 // data members 94 sal_uInt32 data[16]; 95 sal_uInt32 hashdata[5]; 96 public: 97 NIST_Hash( const char* pString, sal_uInt32 nLen ); 98 99 sal_uInt32 *getHash() { return hashdata; } 100 }; 101 102 void NIST_Hash::transform() 103 { 104 // constants 105 const sal_uInt32 K2 = 0x5A827999; 106 const sal_uInt32 K3 = 0x6ED9EBA1; 107 const sal_uInt32 K5 = 0x8F1BBCDC; 108 const sal_uInt32 K10 = 0xCA62C1D6; 109 110 sal_uInt32 a, b, c, d, e; 111 a = hashdata[0]; 112 b = hashdata[1]; 113 c = hashdata[2]; 114 d = hashdata[3]; 115 e = hashdata[4]; 116 117 subRound( a, b, c, d, e, K2, data[ 0], 1 ); 118 subRound( e, a, b, c, d, K2, data[ 1], 1 ); 119 subRound( d, e, a, b, c, K2, data[ 2], 1 ); 120 subRound( c, d, e, a, b, K2, data[ 3], 1 ); 121 subRound( b, c, d, e, a, K2, data[ 4], 1 ); 122 subRound( a, b, c, d, e, K2, data[ 5], 1 ); 123 subRound( e, a, b, c, d, K2, data[ 6], 1 ); 124 subRound( d, e, a, b, c, K2, data[ 7], 1 ); 125 subRound( c, d, e, a, b, K2, data[ 8], 1 ); 126 subRound( b, c, d, e, a, K2, data[ 9], 1 ); 127 subRound( a, b, c, d, e, K2, data[10], 1 ); 128 subRound( e, a, b, c, d, K2, data[11], 1 ); 129 subRound( d, e, a, b, c, K2, data[12], 1 ); 130 subRound( c, d, e, a, b, K2, data[13], 1 ); 131 subRound( b, c, d, e, a, K2, data[14], 1 ); 132 subRound( a, b, c, d, e, K2, data[15], 1 ); 133 subRound( e, a, b, c, d, K2, expand_store( 16 ), 1 ); 134 subRound( d, e, a, b, c, K2, expand_store( 17 ), 1 ); 135 subRound( c, d, e, a, b, K2, expand_store( 18 ), 1 ); 136 subRound( b, c, d, e, a, K2, expand_store( 19 ), 1 ); 137 138 subRound( a, b, c, d, e, K3, expand_store( 20 ), 2 ); 139 subRound( e, a, b, c, d, K3, expand_store( 21 ), 2 ); 140 subRound( d, e, a, b, c, K3, expand_store( 22 ), 2 ); 141 subRound( c, d, e, a, b, K3, expand_store( 23 ), 2 ); 142 subRound( b, c, d, e, a, K3, expand_store( 24 ), 2 ); 143 subRound( a, b, c, d, e, K3, expand_store( 25 ), 2 ); 144 subRound( e, a, b, c, d, K3, expand_store( 26 ), 2 ); 145 subRound( d, e, a, b, c, K3, expand_store( 27 ), 2 ); 146 subRound( c, d, e, a, b, K3, expand_store( 28 ), 2 ); 147 subRound( b, c, d, e, a, K3, expand_store( 29 ), 2 ); 148 subRound( a, b, c, d, e, K3, expand_store( 30 ), 2 ); 149 subRound( e, a, b, c, d, K3, expand_store( 31 ), 2 ); 150 subRound( d, e, a, b, c, K3, expand_store( 32 ), 2 ); 151 subRound( c, d, e, a, b, K3, expand_store( 33 ), 2 ); 152 subRound( b, c, d, e, a, K3, expand_store( 34 ), 2 ); 153 subRound( a, b, c, d, e, K3, expand_store( 35 ), 2 ); 154 subRound( e, a, b, c, d, K3, expand_store( 36 ), 2 ); 155 subRound( d, e, a, b, c, K3, expand_store( 37 ), 2 ); 156 subRound( c, d, e, a, b, K3, expand_store( 38 ), 2 ); 157 subRound( b, c, d, e, a, K3, expand_store( 39 ), 2 ); 158 159 subRound( a, b, c, d, e, K5, expand_store( 40 ), 3 ); 160 subRound( e, a, b, c, d, K5, expand_store( 41 ), 3 ); 161 subRound( d, e, a, b, c, K5, expand_store( 42 ), 3 ); 162 subRound( c, d, e, a, b, K5, expand_store( 43 ), 3 ); 163 subRound( b, c, d, e, a, K5, expand_store( 44 ), 3 ); 164 subRound( a, b, c, d, e, K5, expand_store( 45 ), 3 ); 165 subRound( e, a, b, c, d, K5, expand_store( 46 ), 3 ); 166 subRound( d, e, a, b, c, K5, expand_store( 47 ), 3 ); 167 subRound( c, d, e, a, b, K5, expand_store( 48 ), 3 ); 168 subRound( b, c, d, e, a, K5, expand_store( 49 ), 3 ); 169 subRound( a, b, c, d, e, K5, expand_store( 50 ), 3 ); 170 subRound( e, a, b, c, d, K5, expand_store( 51 ), 3 ); 171 subRound( d, e, a, b, c, K5, expand_store( 52 ), 3 ); 172 subRound( c, d, e, a, b, K5, expand_store( 53 ), 3 ); 173 subRound( b, c, d, e, a, K5, expand_store( 54 ), 3 ); 174 subRound( a, b, c, d, e, K5, expand_store( 55 ), 3 ); 175 subRound( e, a, b, c, d, K5, expand_store( 56 ), 3 ); 176 subRound( d, e, a, b, c, K5, expand_store( 57 ), 3 ); 177 subRound( c, d, e, a, b, K5, expand_store( 58 ), 3 ); 178 subRound( b, c, d, e, a, K5, expand_store( 59 ), 3 ); 179 180 subRound( a, b, c, d, e, K10, expand_store( 60 ), 4 ); 181 subRound( e, a, b, c, d, K10, expand_store( 61 ), 4 ); 182 subRound( d, e, a, b, c, K10, expand_store( 62 ), 4 ); 183 subRound( c, d, e, a, b, K10, expand_store( 63 ), 4 ); 184 subRound( b, c, d, e, a, K10, expand_store( 64 ), 4 ); 185 subRound( a, b, c, d, e, K10, expand_store( 65 ), 4 ); 186 subRound( e, a, b, c, d, K10, expand_store( 66 ), 4 ); 187 subRound( d, e, a, b, c, K10, expand_store( 67 ), 4 ); 188 subRound( c, d, e, a, b, K10, expand_store( 68 ), 4 ); 189 subRound( b, c, d, e, a, K10, expand_store( 69 ), 4 ); 190 subRound( a, b, c, d, e, K10, expand_store( 70 ), 4 ); 191 subRound( e, a, b, c, d, K10, expand_store( 71 ), 4 ); 192 subRound( d, e, a, b, c, K10, expand_store( 72 ), 4 ); 193 subRound( c, d, e, a, b, K10, expand_store( 73 ), 4 ); 194 subRound( b, c, d, e, a, K10, expand_store( 74 ), 4 ); 195 subRound( a, b, c, d, e, K10, expand_store( 75 ), 4 ); 196 subRound( e, a, b, c, d, K10, expand_store( 76 ), 4 ); 197 subRound( d, e, a, b, c, K10, expand_nostore( 77 ), 4 ); 198 subRound( c, d, e, a, b, K10, expand_nostore( 78 ), 4 ); 199 subRound( b, c, d, e, a, K10, expand_nostore( 79 ), 4 ); 200 201 hashdata[0] += a; 202 hashdata[1] += b; 203 hashdata[2] += c; 204 hashdata[3] += d; 205 hashdata[4] += e; 206 } 207 208 #define BLOCKSIZE sizeof( data ) 209 210 NIST_Hash::NIST_Hash( const char* pString, sal_uInt32 nLen ) 211 { 212 hashdata[0] = 0x67452301; 213 hashdata[1] = 0xefcdab89; 214 hashdata[2] = 0x98badcfe; 215 hashdata[3] = 0x10325476; 216 hashdata[4] = 0xc3d2e1f0; 217 218 sal_uInt32 nBytes = nLen; 219 220 while( nLen >= sizeof( data ) ) 221 { 222 memcpy( data, pString, sizeof( data ) ); 223 pString += sizeof( data ); 224 nLen -= sizeof( data ); 225 transform(); 226 } 227 memcpy( data, pString, nLen ); 228 ((char*)data)[nLen++] = 0x80; 229 if( nLen > sizeof( data ) - 8 ) 230 { 231 memset( ((char*)data)+nLen, 0, sizeof( data ) - nLen ); 232 transform(); 233 memset( data, 0, sizeof( data ) - 8 ); 234 } 235 else 236 memset( ((char*)data)+nLen, 0, sizeof( data ) - 8 - nLen ); 237 data[14] = 0; 238 data[15] = nBytes << 3; 239 transform(); 240 } 241 242 #ifdef TEST 243 #include <stdio.h> 244 int main( int argc, const char** argv ) 245 { 246 const char* pHash = argc < 2 ? argv[0] : argv[1]; 247 248 NIST_Hash aHash( pHash, strlen( pHash ) ); 249 sal_uInt32* pBits = aHash.getHash(); 250 251 printf( "text : %s\n" 252 "bits : 0x%.8x 0x%.8x 0x%.8x 0x%.8x 0x%.8x\n", 253 pHash, 254 pBits[0], pBits[1], pBits[2],pBits[3],pBits[4] 255 ); 256 return 0; 257 } 258 259 #endif 260