author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 13 Oct 2010 15:01:35 +0300 | |
branch | RCL_3 |
changeset 55 | ea98413ce11f |
parent 45 | 6b6920c56e2f |
permissions | -rw-r--r-- |
0
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/* |
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--------------------------------------------------------------------------- |
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Copyright (c) 2002, Dr Brian Gladman < >, Worcester, UK. |
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All rights reserved. |
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|
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LICENSE TERMS |
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|
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The free distribution and use of this software in both source and binary |
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form is allowed (with or without changes) provided that: |
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|
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1. distributions of this source code include the above copyright |
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notice, this list of conditions and the following disclaimer; |
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|
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2. distributions in binary form include the above copyright |
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notice, this list of conditions and the following disclaimer |
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in the documentation and/or other associated materials; |
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|
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3. the copyright holder's name is not used to endorse products |
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built using this software without specific written permission. |
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|
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ALTERNATIVELY, provided that this notice is retained in full, this product |
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may be distributed under the terms of the GNU General Public License (GPL), |
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in which case the provisions of the GPL apply INSTEAD OF those given above. |
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DISCLAIMER |
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This software is provided 'as is' with no explicit or implied warranties |
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in respect of its properties, including, but not limited to, correctness |
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and/or fitness for purpose. |
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--------------------------------------------------------------------------- |
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*/ |
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//#include "stdafx.h" |
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#include <libc/string.h> /* for memcpy() etc. */ |
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#include <libc/stdlib.h> /* for _lrotl with VC++ */ |
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#include "sha1.h" |
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#include "hmac.h" |
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void derive_key(const unsigned char pwd[], /* the PASSWORD */ |
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unsigned int pwd_len, /* and its length */ |
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const unsigned char salt[], /* the SALT and its */ |
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unsigned int salt_len, /* length */ |
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unsigned int iter, /* the number of iterations */ |
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unsigned char key[], /* space for the output key */ |
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unsigned int key_len)/* and its required length */ |
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{ |
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unsigned int i, j, k, n_blk; |
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unsigned char uu[OUT_BLOCK_LENGTH], ux[OUT_BLOCK_LENGTH]; |
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hmac_ctx c1[1], c2[1], c3[1]; |
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/* set HMAC context (c1) for password */ |
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hmac_sha1_begin(c1); |
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hmac_sha1_key(pwd, pwd_len, c1); |
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/* set HMAC context (c2) for password and salt */ |
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memcpy(c2, c1, sizeof(hmac_ctx)); |
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hmac_sha1_data(salt, salt_len, c2); |
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/* find the number of SHA blocks in the key */ |
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n_blk = 1 + (key_len - 1) / OUT_BLOCK_LENGTH; |
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for(i = 0; i < n_blk; ++i) /* for each block in key */ |
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{ |
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/* ux[] holds the running xor value */ |
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memset(ux, 0, OUT_BLOCK_LENGTH); |
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/* set HMAC context (c3) for password and salt */ |
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memcpy(c3, c2, sizeof(hmac_ctx)); |
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/* enter additional data for 1st block into uu */ |
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uu[0] = (unsigned char)((i + 1) >> 24); |
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uu[1] = (unsigned char)((i + 1) >> 16); |
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uu[2] = (unsigned char)((i + 1) >> 8); |
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uu[3] = (unsigned char)(i + 1); |
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/* this is the key mixing iteration */ |
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for(j = 0, k = 4; j < iter; ++j) |
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{ |
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/* add previous round data to HMAC */ |
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hmac_sha1_data(uu, k, c3); |
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/* obtain HMAC for uu[] */ |
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hmac_sha1_end(uu, OUT_BLOCK_LENGTH, c3); |
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/* xor into the running xor block */ |
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for(k = 0; k < OUT_BLOCK_LENGTH; ++k) |
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ux[k] ^= uu[k]; |
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/* set HMAC context (c3) for password */ |
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memcpy(c3, c1, sizeof(hmac_ctx)); |
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} |
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/* compile key blocks into the key output */ |
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j = 0; k = i * OUT_BLOCK_LENGTH; |
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while(j < OUT_BLOCK_LENGTH && k < key_len) |
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key[k++] = ux[j++]; |
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} |
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} |
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103 |
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104 |
/*#ifdef TEST*/ |
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105 |
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106 |
#include <stdio.h> |
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107 |
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108 |
#if 0 |
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109 |
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110 |
struct |
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111 |
{ unsigned int pwd_len; |
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unsigned int salt_len; |
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unsigned int it_count; |
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unsigned char *pwd; |
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unsigned char salt[32]; |
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unsigned char key[32]; |
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} tests[] = |
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118 |
{ |
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119 |
{ 8, 4, 5, (unsigned char*)"password", |
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{ 0x12, 0x34, 0x56, 0x78 }, |
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121 |
{ 0x5c, 0x75, 0xce, 0xf0, 0x1a, 0x96, 0x0d, 0xf7, |
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0x4c, 0xb6, 0xb4, 0x9b, 0x9e, 0x38, 0xe6, 0xb5 } /* ... */ |
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123 |
}, |
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124 |
{ 8, 8, 5, (unsigned char*)"password", |
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{ 0x12, 0x34, 0x56, 0x78, 0x78, 0x56, 0x34, 0x12 }, |
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126 |
{ 0xd1, 0xda, 0xa7, 0x86, 0x15, 0xf2, 0x87, 0xe6, |
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0xa1, 0xc8, 0xb1, 0x20, 0xd7, 0x06, 0x2a, 0x49 } /* ... */ |
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128 |
} |
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129 |
}; |
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130 |
|
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131 |
|
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132 |
|
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133 |
|
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134 |
|
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135 |
|
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136 |
void get_key(unsigned char key[], |
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137 |
unsigned int keylength) |
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138 |
{ |
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139 |
|
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unsigned int i, j, n=0,bitykeylen = 256; |
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unsigned char bitykey[256]; |
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142 |
|
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143 |
for(i = 0; i <1; ++i) |
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144 |
{ |
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derive_key(tests[i].pwd, tests[i].pwd_len, tests[i].salt, |
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tests[i].salt_len, tests[i].it_count, bitykey, bitykeylen); |
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for(j = 0; j < bitykeylen && j < 64; j += 4) |
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148 |
{ |
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if(j % ( keylength / 8 ) == 0 && j!=0 ) |
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150 |
break; |
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key[n++] = bitykey[j]; |
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key[n++]= bitykey[j+1]; |
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key[n++]= bitykey[j+2]; |
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key[n++] = bitykey[j+3]; |
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155 |
} |
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156 |
} |
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157 |
} |
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158 |
|
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159 |
#endif |
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160 |
/*int _tmain(int argc, _TCHAR* argv[]) |
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161 |
{ |
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unsigned char key[16]; |
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unsigned int keylength = 128; |
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get_key( key , keylength); |
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return 0; |
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166 |
}*/ |
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167 |
/*.............hmac...................*/ |
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168 |
/* initialise the HMAC context to zero */ |
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169 |
void hmac_sha1_begin(hmac_ctx cx[1]) |
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170 |
{ |
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memset(cx, 0, sizeof(hmac_ctx)); |
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172 |
} |
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173 |
|
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174 |
/* input the HMAC key (can be called multiple times) */ |
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int hmac_sha1_key(const unsigned char key[], unsigned long key_len, hmac_ctx cx[1]) |
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176 |
{ |
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if(cx->klen == HMAC_IN_DATA) /* error if further key input */ |
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return HMAC_BAD_MODE; /* is attempted in data mode */ |
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179 |
|
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if(cx->klen + key_len > IN_BLOCK_LENGTH) /* if the key has to be hashed */ |
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181 |
{ |
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if(cx->klen <= IN_BLOCK_LENGTH) /* if the hash has not yet been */ |
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183 |
{ /* started, initialise it and */ |
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sha1_begin(cx->ctx); /* hash stored key characters */ |
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185 |
sha1_hash(cx->key, cx->klen, cx->ctx); |
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186 |
} |
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187 |
|
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188 |
sha1_hash(key, key_len, cx->ctx); /* hash long key data into hash */ |
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189 |
} |
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190 |
else /* otherwise store key data */ |
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191 |
memcpy(cx->key + cx->klen, key, key_len); |
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192 |
|
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193 |
cx->klen += key_len; /* update the key length count */ |
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194 |
return HMAC_OK; |
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195 |
} |
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196 |
|
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197 |
/* input the HMAC data (can be called multiple times) - */ |
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198 |
/* note that this call terminates the key input phase */ |
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199 |
void hmac_sha1_data(const unsigned char data[], unsigned long data_len, hmac_ctx cx[1]) |
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200 |
{ unsigned int i; |
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201 |
|
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202 |
if(cx->klen != HMAC_IN_DATA) /* if not yet in data phase */ |
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203 |
{ |
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204 |
if(cx->klen > IN_BLOCK_LENGTH) /* if key is being hashed */ |
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205 |
{ /* complete the hash and */ |
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206 |
sha1_end(cx->key, cx->ctx); /* store the result as the */ |
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cx->klen = OUT_BLOCK_LENGTH; /* key and set new length */ |
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} |
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209 |
|
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/* pad the key if necessary */ |
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memset(cx->key + cx->klen, 0, IN_BLOCK_LENGTH - cx->klen); |
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212 |
|
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/* xor ipad into key value */ |
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for(i = 0; i < (IN_BLOCK_LENGTH >> 2); ++i) |
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((unsigned long*)cx->key)[i] ^= 0x36363636; |
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216 |
|
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/* and start hash operation */ |
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sha1_begin(cx->ctx); |
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sha1_hash(cx->key, IN_BLOCK_LENGTH, cx->ctx); |
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220 |
|
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/* mark as now in data mode */ |
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cx->klen = HMAC_IN_DATA; |
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} |
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224 |
|
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/* hash the data (if any) */ |
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if(data_len) |
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sha1_hash(data, data_len, cx->ctx); |
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} |
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229 |
|
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/* compute and output the MAC value */ |
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void hmac_sha1_end(unsigned char mac[], unsigned long mac_len, hmac_ctx cx[1]) |
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{ unsigned char dig[OUT_BLOCK_LENGTH]; |
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unsigned int i; |
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234 |
|
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/* if no data has been entered perform a null data phase */ |
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if(cx->klen != HMAC_IN_DATA) |
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hmac_sha1_data((const unsigned char*)0, 0, cx); |
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238 |
|
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sha1_end(dig, cx->ctx); /* complete the inner hash */ |
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240 |
|
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/* set outer key value using opad and removing ipad */ |
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for(i = 0; i < (IN_BLOCK_LENGTH >> 2); ++i) |
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((unsigned long*)cx->key)[i] ^= 0x36363636 ^ 0x5c5c5c5c; |
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244 |
|
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/* perform the outer hash operation */ |
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sha1_begin(cx->ctx); |
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sha1_hash(cx->key, IN_BLOCK_LENGTH, cx->ctx); |
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sha1_hash(dig, OUT_BLOCK_LENGTH, cx->ctx); |
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sha1_end(dig, cx->ctx); |
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250 |
|
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/* output the hash value */ |
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for(i = 0; i < mac_len; ++i) |
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mac[i] = dig[i]; |
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} |
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255 |
|
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/* 'do it all in one go' subroutine */ |
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void hmac_sha1(const unsigned char key[], unsigned int key_len, |
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const unsigned char data[], unsigned int data_len, |
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unsigned char mac[], unsigned int mac_len) |
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{ hmac_ctx cx[1]; |
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|
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hmac_sha1_begin(cx); |
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hmac_sha1_key(key, key_len, cx); |
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hmac_sha1_data(data, data_len, cx); |
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hmac_sha1_end(mac, mac_len, cx); |
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} |
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267 |
|
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/****************hmac*******************/ |
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269 |
|
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/*****************************sha1******************/ |
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/* |
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To obtain the highest speed on processors with 32-bit words, this code |
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needs to determine the order in which bytes are packed into such words. |
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The following block of code is an attempt to capture the most obvious |
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ways in which various environemnts specify their endian definitions. |
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It may well fail, in which case the definitions will need to be set by |
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editing at the points marked **** EDIT HERE IF NECESSARY **** below. |
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*/ |
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#define SHA_LITTLE_ENDIAN 1234 /* byte 0 is least significant (i386) */ |
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#define SHA_BIG_ENDIAN 4321 /* byte 0 is most significant (mc68k) */ |
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/* |
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#if !defined(PLATFORM_BYTE_ORDER) |
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#if defined(LITTLE_ENDIAN) || defined(BIG_ENDIAN) |
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# if defined(LITTLE_ENDIAN) && defined(BIG_ENDIAN) |
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# if defined(BYTE_ORDER) |
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# if (BYTE_ORDER == LITTLE_ENDIAN) |
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# define PLATFORM_BYTE_ORDER SHA_LITTLE_ENDIAN |
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# elif (BYTE_ORDER == BIG_ENDIAN) |
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# define PLATFORM_BYTE_ORDER SHA_BIG_ENDIAN |
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# endif |
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# endif |
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# elif defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN) |
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# define PLATFORM_BYTE_ORDER SHA_LITTLE_ENDIAN |
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# elif !defined(LITTLE_ENDIAN) && defined(BIG_ENDIAN) |
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# define PLATFORM_BYTE_ORDER SHA_BIG_ENDIAN |
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# endif |
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#elif defined(_LITTLE_ENDIAN) || defined(_BIG_ENDIAN) |
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# if defined(_LITTLE_ENDIAN) && defined(_BIG_ENDIAN) |
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# if defined(_BYTE_ORDER) |
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# if (_BYTE_ORDER == _LITTLE_ENDIAN) |
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# define PLATFORM_BYTE_ORDER SHA_LITTLE_ENDIAN |
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# elif (_BYTE_ORDER == _BIG_ENDIAN) |
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# define PLATFORM_BYTE_ORDER SHA_BIG_ENDIAN |
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# endif |
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# endif |
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# elif defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN) |
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# define PLATFORM_BYTE_ORDER SHA_LITTLE_ENDIAN |
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# elif !defined(_LITTLE_ENDIAN) && defined(_BIG_ENDIAN) |
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309 |
# define PLATFORM_BYTE_ORDER SHA_BIG_ENDIAN |
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310 |
# endif |
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#elif 0 /#* **** EDIT HERE IF NECESSARY **** */ |
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312 |
/*#define PLATFORM_BYTE_ORDER SHA_LITTLE_ENDIAN |
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/#*#elif 0 /#* **** EDIT HERE IF NECESSARY ****# / |
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314 |
#define PLATFORM_BYTE_ORDER SHA_BIG_ENDIAN |
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#elif (('1234' >> 24) == '1') |
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# define PLATFORM_BYTE_ORDER SHA_LITTLE_ENDIAN |
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#elif (('4321' >> 24) == '1') |
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318 |
# define PLATFORM_BYTE_ORDER SHA_BIG_ENDIAN |
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319 |
#endif |
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320 |
#endif |
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321 |
*/ |
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322 |
//#define PLATFORM_BYTE_ORDER SHA_BIG_ENDIAN |
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323 |
//# define PLATFORM_BYTE_ORDER SHA_BIG_ENDIAN |
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324 |
# define PLATFORM_BYTE_ORDER SHA_LITTLE_ENDIAN |
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#if !defined(PLATFORM_BYTE_ORDER) |
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326 |
# error Please set undetermined byte order (lines 87 or 89 of sha1.c). |
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327 |
#endif |
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328 |
|
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329 |
#define rotl32(x,n) (((x) << n) | ((x) >> (32 - n))) |
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330 |
|
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331 |
#if (PLATFORM_BYTE_ORDER == SHA_BIG_ENDIAN) |
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332 |
#define swap_b32(x) (x) |
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333 |
#elif defined(bswap_32) |
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#define swap_b32(x) bswap_32(x) |
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335 |
#else |
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336 |
#define swap_b32(x) ((rotl32((x), 8) & 0x00ff00ff) | (rotl32((x), 24) & 0xff00ff00)) |
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337 |
#endif |
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|
338 |
|
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339 |
#define SHA1_MASK (SHA1_BLOCK_SIZE - 1) |
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340 |
|
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|
341 |
/* reverse byte order in 32-bit words */ |
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|
342 |
|
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|
343 |
#define ch(x,y,z) (((x) & (y)) ^ (~(x) & (z))) |
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344 |
#define parity(x,y,z) ((x) ^ (y) ^ (z)) |
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345 |
#define maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) |
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|
346 |
|
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|
347 |
/* A normal version as set out in the FIPS */ |
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348 |
|
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349 |
#define rnd(f,k) \ |
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350 |
t = a; a = rotl32(a,5) + f(b,c,d) + e + k + w[i]; \ |
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|
351 |
e = d; d = c; c = rotl32(b, 30); b = t |
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|
352 |
|
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353 |
void sha1_compile(sha1_ctx ctx[1]) |
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354 |
{ sha1_32t w[80], i, a, b, c, d, e, t; |
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|
355 |
|
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|
356 |
/* note that words are compiled from the buffer into 32-bit */ |
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|
357 |
/* words in big-endian order so an order reversal is needed */ |
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|
358 |
/* here on little endian machines */ |
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359 |
for(i = 0; i < SHA1_BLOCK_SIZE / 4; ++i) |
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|
360 |
w[i] = swap_b32(ctx->wbuf[i]); |
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|
361 |
|
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|
362 |
for(i = SHA1_BLOCK_SIZE / 4; i < 80; ++i) |
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|
363 |
w[i] = rotl32(w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16], 1); |
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|
364 |
|
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|
365 |
a = ctx->hash[0]; |
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|
366 |
b = ctx->hash[1]; |
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|
367 |
c = ctx->hash[2]; |
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|
368 |
d = ctx->hash[3]; |
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|
369 |
e = ctx->hash[4]; |
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|
370 |
|
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|
371 |
for(i = 0; i < 20; ++i) |
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|
372 |
{ |
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|
373 |
rnd(ch, 0x5a827999); |
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|
374 |
} |
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|
375 |
|
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376 |
for(i = 20; i < 40; ++i) |
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|
377 |
{ |
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|
378 |
rnd(parity, 0x6ed9eba1); |
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|
379 |
} |
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|
380 |
|
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|
381 |
for(i = 40; i < 60; ++i) |
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|
382 |
{ |
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|
383 |
rnd(maj, 0x8f1bbcdc); |
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|
384 |
} |
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|
385 |
|
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|
386 |
for(i = 60; i < 80; ++i) |
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|
387 |
{ |
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|
388 |
rnd(parity, 0xca62c1d6); |
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|
389 |
} |
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|
390 |
|
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|
391 |
ctx->hash[0] += a; |
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|
392 |
ctx->hash[1] += b; |
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|
393 |
ctx->hash[2] += c; |
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|
394 |
ctx->hash[3] += d; |
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|
395 |
ctx->hash[4] += e; |
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|
396 |
} |
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|
397 |
|
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|
398 |
void sha1_begin(sha1_ctx ctx[1]) |
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|
399 |
{ |
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|
400 |
ctx->count[0] = ctx->count[1] = 0; |
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|
401 |
ctx->hash[0] = 0x67452301; |
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|
402 |
ctx->hash[1] = 0xefcdab89; |
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Revision: 201003
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|
403 |
ctx->hash[2] = 0x98badcfe; |
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|
404 |
ctx->hash[3] = 0x10325476; |
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|
405 |
ctx->hash[4] = 0xc3d2e1f0; |
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|
406 |
} |
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diff
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|
407 |
|
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Revision: 201003
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parents:
diff
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|
408 |
/* SHA1 hash data in an array of bytes into hash buffer and */ |
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|
409 |
/* call the hash_compile function as required. */ |
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|
410 |
|
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|
411 |
void sha1_hash(const unsigned char data[], unsigned int len, sha1_ctx ctx[1]) |
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|
412 |
{ sha1_32t pos = (sha1_32t)(ctx->count[0] & SHA1_MASK), |
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|
413 |
space = SHA1_BLOCK_SIZE - pos; |
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414 |
const unsigned char *sp = data; |
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|
415 |
|
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416 |
if((ctx->count[0] += len) < len) |
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417 |
++(ctx->count[1]); |
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|
418 |
|
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419 |
while(len >= space) /* tranfer whole blocks if possible */ |
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420 |
{ |
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421 |
memcpy(((unsigned char*)ctx->wbuf) + pos, sp, space); |
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|
422 |
sp += space; len -= space; space = SHA1_BLOCK_SIZE; pos = 0; |
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423 |
sha1_compile(ctx); |
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424 |
} |
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|
425 |
|
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426 |
/*lint -e{803} conceivable data overrun */ |
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427 |
/* there are two cases: the above while loop entered or not */ |
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|
428 |
/* entered. If not entered, 'space = SHA1_BLOCK_SIZE - pos' */ |
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|
429 |
/* and 'len < space' so that 'len + pos < SHA1_BLOCK_SIZE'. */ |
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|
430 |
/* If entered, 'pos = 0', 'space = SHA1_BLOCK_SIZE' and */ |
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|
431 |
/* 'len < space' so that 'pos + len < SHA1_BLOCK_SIZE'. In */ |
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432 |
/* both cases, therefore, the memory copy is in the buffer */ |
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|
433 |
|
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|
434 |
memcpy(((unsigned char*)ctx->wbuf) + pos, sp, len); |
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435 |
} |
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|
436 |
|
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|
437 |
/* SHA1 final padding and digest calculation */ |
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|
438 |
|
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Revision: 201003
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|
439 |
#if (PLATFORM_BYTE_ORDER == SHA_LITTLE_ENDIAN) |
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440 |
static sha1_32t mask[4] = |
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441 |
{ 0x00000000, 0x000000ff, 0x0000ffff, 0x00ffffff }; |
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|
442 |
static sha1_32t bits[4] = |
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|
443 |
{ 0x00000080, 0x00008000, 0x00800000, 0x80000000 }; |
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444 |
#else |
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445 |
static sha1_32t mask[4] = |
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446 |
{ 0x00000000, 0xff000000, 0xffff0000, 0xffffff00 }; |
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|
447 |
static sha1_32t bits[4] = |
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|
448 |
{ 0x80000000, 0x00800000, 0x00008000, 0x00000080 }; |
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449 |
#endif |
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|
450 |
|
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|
451 |
void sha1_end(unsigned char hval[], sha1_ctx ctx[1]) |
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452 |
{ sha1_32t i = (sha1_32t)(ctx->count[0] & SHA1_MASK); |
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|
453 |
|
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|
454 |
|
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|
455 |
/* mask out the rest of any partial 32-bit word and then set */ |
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456 |
/* the next byte to 0x80. On big-endian machines any bytes in */ |
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|
457 |
/* the buffer will be at the top end of 32 bit words, on little */ |
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458 |
/* endian machines they will be at the bottom. Hence the AND */ |
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459 |
/* and OR masks above are reversed for little endian systems */ |
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460 |
/* Note that we can always add the first padding byte at this */ |
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461 |
/* point because the buffer always has at least one empty slot */ |
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462 |
ctx->wbuf[i >> 2] = (ctx->wbuf[i >> 2] & mask[i & 3]) | bits[i & 3]; |
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|
463 |
|
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Revision: 201003
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464 |
/* we need 9 or more empty positions, one for the padding byte */ |
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Revision: 201003
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465 |
/* (above) and eight for the length count. If there is not */ |
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Revision: 201003
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466 |
/* enough space pad and empty the buffer */ |
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|
467 |
if(i > SHA1_BLOCK_SIZE - 9) |
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Revision: 201003
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|
468 |
{ |
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Revision: 201003
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|
469 |
if(i < 60) ctx->wbuf[15] = 0; |
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Revision: 201003
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|
470 |
sha1_compile(ctx); |
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Revision: 201003
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|
471 |
i = 0; |
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Revision: 201003
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|
472 |
} |
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Revision: 201003
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|
473 |
else /* compute a word index for the empty buffer positions */ |
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Revision: 201003
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|
474 |
i = (i >> 2) + 1; |
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Revision: 201003
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|
475 |
|
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Revision: 201003
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|
476 |
while(i < 14) /* and zero pad all but last two positions */ |
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Revision: 201003
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|
477 |
ctx->wbuf[i++] = 0; |
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Revision: 201003
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|
478 |
|
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Revision: 201003
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|
479 |
/* assemble the eight byte counter in in big-endian format */ |
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Revision: 201003
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|
480 |
ctx->wbuf[14] = swap_b32((ctx->count[1] << 3) | (ctx->count[0] >> 29)); |
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Revision: 201003
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|
481 |
ctx->wbuf[15] = swap_b32(ctx->count[0] << 3); |
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Revision: 201003
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|
482 |
|
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Revision: 201003
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|
483 |
sha1_compile(ctx); |
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Revision: 201003
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|
484 |
|
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Revision: 201003
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|
485 |
/* extract the hash value as bytes in case the hash buffer is */ |
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Revision: 201003
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|
486 |
/* misaligned for 32-bit words */ |
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Revision: 201003
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|
487 |
/*lint -e{504} unusual shift operation (unusually formed right argument) */ |
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Revision: 201003
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|
488 |
for(i = 0; i < SHA1_DIGEST_SIZE; ++i) |
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Revision: 201003
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|
489 |
hval[i] = (unsigned char)(ctx->hash[i >> 2] >> (8 * (~i & 3))); |
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Revision: 201003
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|
490 |
} |
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Revision: 201003
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|
491 |
|
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Revision: 201003
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|
492 |
void sha1(unsigned char hval[], const unsigned char data[], unsigned int len) |
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Revision: 201003
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|
493 |
{ sha1_ctx cx[1]; |
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Revision: 201003
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|
494 |
|
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Revision: 201003
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|
495 |
sha1_begin(cx); sha1_hash(data, len, cx); sha1_end(hval, cx); |
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Revision: 201003
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diff
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|
496 |
} |