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1 <?php 2 3 if (class_exists('ParagonIE_Sodium_Core_AES_Block', false)) { 4 return; 5 } 6 7 /** 8 * @internal This should only be used by sodium_compat 9 */ 10 class ParagonIE_Sodium_Core_AES_Block extends SplFixedArray 11 { 12 /** 13 * @var array<int, int> 14 */ 15 protected $values = array(); 16 17 /** 18 * @var int 19 */ 20 protected $size; 21 22 /** 23 * @param int $size 24 */ 25 public function __construct($size = 8) 26 { 27 parent::__construct($size); 28 $this->size = $size; 29 $this->values = array_fill(0, $size, 0); 30 } 31 32 /** 33 * @return self 34 */ 35 public static function init() 36 { 37 return new self(8); 38 } 39 40 /** 41 * @internal You should not use this directly from another application 42 * 43 * @param array<int, int> $array 44 * @param bool $save_indexes 45 * @return self 46 * 47 * @psalm-suppress MethodSignatureMismatch 48 */ 49 #[ReturnTypeWillChange] 50 public static function fromArray($array, $save_indexes = null) 51 { 52 $count = count($array); 53 if ($save_indexes) { 54 $keys = array_keys($array); 55 } else { 56 $keys = range(0, $count - 1); 57 } 58 $array = array_values($array); 59 /** @var array<int, int> $keys */ 60 61 $obj = new ParagonIE_Sodium_Core_AES_Block(); 62 if ($save_indexes) { 63 for ($i = 0; $i < $count; ++$i) { 64 $obj->offsetSet($keys[$i], $array[$i]); 65 } 66 } else { 67 for ($i = 0; $i < $count; ++$i) { 68 $obj->offsetSet($i, $array[$i]); 69 } 70 } 71 return $obj; 72 } 73 74 75 /** 76 * @internal You should not use this directly from another application 77 * 78 * @param int|null $offset 79 * @param int $value 80 * @return void 81 * 82 * @psalm-suppress MethodSignatureMismatch 83 * @psalm-suppress MixedArrayOffset 84 */ 85 #[ReturnTypeWillChange] 86 public function offsetSet($offset, $value) 87 { 88 if (!is_int($value)) { 89 throw new InvalidArgumentException('Expected an integer'); 90 } 91 if (is_null($offset)) { 92 $this->values[] = $value; 93 } else { 94 $this->values[$offset] = $value; 95 } 96 } 97 98 /** 99 * @internal You should not use this directly from another application 100 * 101 * @param int $offset 102 * @return bool 103 * 104 * @psalm-suppress MethodSignatureMismatch 105 * @psalm-suppress MixedArrayOffset 106 */ 107 #[ReturnTypeWillChange] 108 public function offsetExists($offset) 109 { 110 return isset($this->values[$offset]); 111 } 112 113 /** 114 * @internal You should not use this directly from another application 115 * 116 * @param int $offset 117 * @return void 118 * 119 * @psalm-suppress MethodSignatureMismatch 120 * @psalm-suppress MixedArrayOffset 121 */ 122 #[ReturnTypeWillChange] 123 public function offsetUnset($offset) 124 { 125 unset($this->values[$offset]); 126 } 127 128 /** 129 * @internal You should not use this directly from another application 130 * 131 * @param int $offset 132 * @return int 133 * 134 * @psalm-suppress MethodSignatureMismatch 135 * @psalm-suppress MixedArrayOffset 136 */ 137 #[ReturnTypeWillChange] 138 public function offsetGet($offset) 139 { 140 if (!isset($this->values[$offset])) { 141 $this->values[$offset] = 0; 142 } 143 return (int) ($this->values[$offset]); 144 } 145 146 /** 147 * @internal You should not use this directly from another application 148 * 149 * @return array 150 */ 151 public function __debugInfo() 152 { 153 $out = array(); 154 foreach ($this->values as $v) { 155 $out[] = str_pad(dechex($v), 8, '0', STR_PAD_LEFT); 156 } 157 return array(implode(', ', $out)); 158 /* 159 return array(implode(', ', $this->values)); 160 */ 161 } 162 163 /** 164 * @param int $cl low bit mask 165 * @param int $ch high bit mask 166 * @param int $s shift 167 * @param int $x index 1 168 * @param int $y index 2 169 * @return self 170 */ 171 public function swapN($cl, $ch, $s, $x, $y) 172 { 173 static $u32mask = ParagonIE_Sodium_Core_Util::U32_MAX; 174 $a = $this->values[$x] & $u32mask; 175 $b = $this->values[$y] & $u32mask; 176 // (x) = (a & cl) | ((b & cl) << (s)); 177 $this->values[$x] = ($a & $cl) | ((($b & $cl) << $s) & $u32mask); 178 // (y) = ((a & ch) >> (s)) | (b & ch); 179 $this->values[$y] = ((($a & $ch) & $u32mask) >> $s) | ($b & $ch); 180 return $this; 181 } 182 183 /** 184 * @param int $x index 1 185 * @param int $y index 2 186 * @return self 187 */ 188 public function swap2($x, $y) 189 { 190 return $this->swapN(0x55555555, 0xAAAAAAAA, 1, $x, $y); 191 } 192 193 /** 194 * @param int $x index 1 195 * @param int $y index 2 196 * @return self 197 */ 198 public function swap4($x, $y) 199 { 200 return $this->swapN(0x33333333, 0xCCCCCCCC, 2, $x, $y); 201 } 202 203 /** 204 * @param int $x index 1 205 * @param int $y index 2 206 * @return self 207 */ 208 public function swap8($x, $y) 209 { 210 return $this->swapN(0x0F0F0F0F, 0xF0F0F0F0, 4, $x, $y); 211 } 212 213 /** 214 * @return self 215 */ 216 public function orthogonalize() 217 { 218 return $this 219 ->swap2(0, 1) 220 ->swap2(2, 3) 221 ->swap2(4, 5) 222 ->swap2(6, 7) 223 224 ->swap4(0, 2) 225 ->swap4(1, 3) 226 ->swap4(4, 6) 227 ->swap4(5, 7) 228 229 ->swap8(0, 4) 230 ->swap8(1, 5) 231 ->swap8(2, 6) 232 ->swap8(3, 7); 233 } 234 235 /** 236 * @return self 237 */ 238 public function shiftRows() 239 { 240 for ($i = 0; $i < 8; ++$i) { 241 $x = $this->values[$i] & ParagonIE_Sodium_Core_Util::U32_MAX; 242 $this->values[$i] = ( 243 ($x & 0x000000FF) 244 | (($x & 0x0000FC00) >> 2) | (($x & 0x00000300) << 6) 245 | (($x & 0x00F00000) >> 4) | (($x & 0x000F0000) << 4) 246 | (($x & 0xC0000000) >> 6) | (($x & 0x3F000000) << 2) 247 ) & ParagonIE_Sodium_Core_Util::U32_MAX; 248 } 249 return $this; 250 } 251 252 /** 253 * @param int $x 254 * @return int 255 */ 256 public static function rotr16($x) 257 { 258 return (($x << 16) & ParagonIE_Sodium_Core_Util::U32_MAX) | ($x >> 16); 259 } 260 261 /** 262 * @return self 263 */ 264 public function mixColumns() 265 { 266 $q0 = $this->values[0]; 267 $q1 = $this->values[1]; 268 $q2 = $this->values[2]; 269 $q3 = $this->values[3]; 270 $q4 = $this->values[4]; 271 $q5 = $this->values[5]; 272 $q6 = $this->values[6]; 273 $q7 = $this->values[7]; 274 $r0 = (($q0 >> 8) | ($q0 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 275 $r1 = (($q1 >> 8) | ($q1 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 276 $r2 = (($q2 >> 8) | ($q2 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 277 $r3 = (($q3 >> 8) | ($q3 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 278 $r4 = (($q4 >> 8) | ($q4 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 279 $r5 = (($q5 >> 8) | ($q5 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 280 $r6 = (($q6 >> 8) | ($q6 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 281 $r7 = (($q7 >> 8) | ($q7 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 282 283 $this->values[0] = $q7 ^ $r7 ^ $r0 ^ self::rotr16($q0 ^ $r0); 284 $this->values[1] = $q0 ^ $r0 ^ $q7 ^ $r7 ^ $r1 ^ self::rotr16($q1 ^ $r1); 285 $this->values[2] = $q1 ^ $r1 ^ $r2 ^ self::rotr16($q2 ^ $r2); 286 $this->values[3] = $q2 ^ $r2 ^ $q7 ^ $r7 ^ $r3 ^ self::rotr16($q3 ^ $r3); 287 $this->values[4] = $q3 ^ $r3 ^ $q7 ^ $r7 ^ $r4 ^ self::rotr16($q4 ^ $r4); 288 $this->values[5] = $q4 ^ $r4 ^ $r5 ^ self::rotr16($q5 ^ $r5); 289 $this->values[6] = $q5 ^ $r5 ^ $r6 ^ self::rotr16($q6 ^ $r6); 290 $this->values[7] = $q6 ^ $r6 ^ $r7 ^ self::rotr16($q7 ^ $r7); 291 return $this; 292 } 293 294 /** 295 * @return self 296 */ 297 public function inverseMixColumns() 298 { 299 $q0 = $this->values[0]; 300 $q1 = $this->values[1]; 301 $q2 = $this->values[2]; 302 $q3 = $this->values[3]; 303 $q4 = $this->values[4]; 304 $q5 = $this->values[5]; 305 $q6 = $this->values[6]; 306 $q7 = $this->values[7]; 307 $r0 = (($q0 >> 8) | ($q0 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 308 $r1 = (($q1 >> 8) | ($q1 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 309 $r2 = (($q2 >> 8) | ($q2 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 310 $r3 = (($q3 >> 8) | ($q3 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 311 $r4 = (($q4 >> 8) | ($q4 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 312 $r5 = (($q5 >> 8) | ($q5 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 313 $r6 = (($q6 >> 8) | ($q6 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 314 $r7 = (($q7 >> 8) | ($q7 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX; 315 316 $this->values[0] = $q5 ^ $q6 ^ $q7 ^ $r0 ^ $r5 ^ $r7 ^ self::rotr16($q0 ^ $q5 ^ $q6 ^ $r0 ^ $r5); 317 $this->values[1] = $q0 ^ $q5 ^ $r0 ^ $r1 ^ $r5 ^ $r6 ^ $r7 ^ self::rotr16($q1 ^ $q5 ^ $q7 ^ $r1 ^ $r5 ^ $r6); 318 $this->values[2] = $q0 ^ $q1 ^ $q6 ^ $r1 ^ $r2 ^ $r6 ^ $r7 ^ self::rotr16($q0 ^ $q2 ^ $q6 ^ $r2 ^ $r6 ^ $r7); 319 $this->values[3] = $q0 ^ $q1 ^ $q2 ^ $q5 ^ $q6 ^ $r0 ^ $r2 ^ $r3 ^ $r5 ^ self::rotr16($q0 ^ $q1 ^ $q3 ^ $q5 ^ $q6 ^ $q7 ^ $r0 ^ $r3 ^ $r5 ^ $r7); 320 $this->values[4] = $q1 ^ $q2 ^ $q3 ^ $q5 ^ $r1 ^ $r3 ^ $r4 ^ $r5 ^ $r6 ^ $r7 ^ self::rotr16($q1 ^ $q2 ^ $q4 ^ $q5 ^ $q7 ^ $r1 ^ $r4 ^ $r5 ^ $r6); 321 $this->values[5] = $q2 ^ $q3 ^ $q4 ^ $q6 ^ $r2 ^ $r4 ^ $r5 ^ $r6 ^ $r7 ^ self::rotr16($q2 ^ $q3 ^ $q5 ^ $q6 ^ $r2 ^ $r5 ^ $r6 ^ $r7); 322 $this->values[6] = $q3 ^ $q4 ^ $q5 ^ $q7 ^ $r3 ^ $r5 ^ $r6 ^ $r7 ^ self::rotr16($q3 ^ $q4 ^ $q6 ^ $q7 ^ $r3 ^ $r6 ^ $r7); 323 $this->values[7] = $q4 ^ $q5 ^ $q6 ^ $r4 ^ $r6 ^ $r7 ^ self::rotr16($q4 ^ $q5 ^ $q7 ^ $r4 ^ $r7); 324 return $this; 325 } 326 327 /** 328 * @return self 329 */ 330 public function inverseShiftRows() 331 { 332 for ($i = 0; $i < 8; ++$i) { 333 $x = $this->values[$i]; 334 $this->values[$i] = ParagonIE_Sodium_Core_Util::U32_MAX & ( 335 ($x & 0x000000FF) 336 | (($x & 0x00003F00) << 2) | (($x & 0x0000C000) >> 6) 337 | (($x & 0x000F0000) << 4) | (($x & 0x00F00000) >> 4) 338 | (($x & 0x03000000) << 6) | (($x & 0xFC000000) >> 2) 339 ); 340 } 341 return $this; 342 } 343 }
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| Generated : Sat Nov 23 08:20:01 2024 | Cross-referenced by PHPXref |