如何使用我創建的算法散列文件

Question

我想使用我剛剛創建的算法（MD9）散列文件（稱爲hash.txt）。

下面是代碼

<?php 


     function MD9($m) 
     { 
      static $s = array(
       41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6, 
       19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188, 
       76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24, 
       138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251, 
       245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63, 
       148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50, 
       39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165, 
       181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210, 
       150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157, 
       112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27, 
       96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15, 
       85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197, 
       234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65, 
       129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123, 
        8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233, 
       203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228, 
       166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237, 
       31, 26, 219, 153, 141, 51, 159, 17, 131, 20 
      ); 

      // Step 1. Append Padding Bytes 
      $pad = 16 - (strlen($m) & 0xF); 
      $m.= str_repeat(chr($pad), $pad); 

      $length = strlen($m); 

      // Step 2. Append Checksum 
      $c = str_repeat(chr(0), 16); 
      $l = chr(0); 
      for ($i = 0; $i < $length; $i+= 16) { 
       for ($j = 0; $j < 16; $j++) { 
        // RFC1319 incorrectly states that C[j] should be set to S[c xor L] 
        //$c[$j] = chr($s[ord($m[$i + $j]^$l)]); 
        // per <http://www.rfc-editor.org/errata_search.php?rfc=1319>, however, C[j] should be set to S[c xor L] xor C[j] 
       $c[$j] = chr($s[ord($m[$i + $j]^$l)]^ord($c[$j])); 
       $l = $c[$j]; 
      } 
     } 
     $m.= $c; 

     $length+= 16; 

     // Step 3. Initialize MD Buffer 
     $x = str_repeat(chr(0), 48); 

     // Step 4. Process Message in 16-Byte Blocks 
     for ($i = 0; $i < $length; $i+= 16) { 
      for ($j = 0; $j < 16; $j++) { 
       $x[$j + 16] = $m[$i + $j]; 
       $x[$j + 32] = $x[$j + 16]^$x[$j]; 
      } 
      $t = chr(0); 
      for ($j = 0; $j < 18; $j++) { 
       for ($k = 0; $k < 48; $k++) { 
        $x[$k] = $t = $x[$k]^chr($s[ord($t)]); 
        //$t = $x[$k] = $x[$k]^chr($s[ord($t)]); 
       } 
       $t = chr(ord($t) + $j); 
      } 
     } 

     // Step 5. Output 
     return bin2hex(substr($x, 0, 16)); 
    } 

    ?> 

當我嘗試運行

<?php 

include 'md9.php'; 

class hashing { 
    public static function filehash($file,$hash) { 
    if (file_exists($file)) { 
     return hash($hash,file_get_contents($file)); 
    } 
    else { 
     return "Error Occurred: File Does Not Exist"; 
    } 
} 
} 

    echo hashing::filehash("hash.txt","md9")."<br />"; 

?> 

我得到一個錯誤 「警告：哈希（）[function.hash]：未知的散列算法：MD9」

我已經嘗試使用相同的算法散列一串字符，它運行良好。

我不知道算法和散列文件有什麼問題。

有人整理我出去請

Answer 1

如果你閱讀文檔，這裏的link，你會看到，你不能只要插上你決定任何算法。 「md9」對PHP沒有任何意義。這是你編造的東西。您需要自己實現該方法，對文件進行散列處理，然後從filehash調用該方法。雖然，一個建議的話。制定自己的哈希算法並不是最安全的方法。建立的哈希算法（sha1，sha-2）可證明是安全的。