1<?php 2 3namespace Random\Engine\Test; 4 5use Random\Engine; 6 7final class TestShaEngine implements Engine 8{ 9 private string $state; 10 11 public function __construct(?string $state = null) 12 { 13 if ($state !== null) { 14 $this->state = $state; 15 } else { 16 $this->state = random_bytes(20); 17 } 18 } 19 20 public function generate(): string 21 { 22 $this->state = sha1($this->state, true); 23 24 return substr($this->state, 0, 8); 25 } 26} 27 28final class TestWrapperEngine implements Engine 29{ 30 public function __construct(private readonly Engine $engine) 31 { 32 } 33 34 public function generate(): string 35 { 36 return $this->engine->generate(); 37 } 38} 39 40final class TestXoshiro128PlusPlusEngine implements Engine 41{ 42 public function __construct( 43 private int $s0, 44 private int $s1, 45 private int $s2, 46 private int $s3 47 ) { 48 } 49 50 private static function rotl($x, $k) 51 { 52 return (($x << $k) | ($x >> (32 - $k))) & 0xFFFFFFFF; 53 } 54 55 public function generate(): string 56 { 57 $result = (self::rotl(($this->s0 + $this->s3) & 0xFFFFFFFF, 7) + $this->s0) & 0xFFFFFFFF; 58 59 $t = ($this->s1 << 9) & 0xFFFFFFFF; 60 61 $this->s2 ^= $this->s0; 62 $this->s3 ^= $this->s1; 63 $this->s1 ^= $this->s2; 64 $this->s0 ^= $this->s3; 65 66 $this->s2 ^= $t; 67 68 $this->s3 = self::rotl($this->s3, 11); 69 70 return pack('V', $result); 71 } 72} 73 74?> 75
