MySQL哈希函数实现

我知道php有md5(),sha1()和hash()函数,但是我想用MySQL PASSWORD()函数创建一个哈希.到目前为止,我能想到的唯一的办法是只查询服务器,但我想一个函数(最好是在PHP或Perl),将做同样的事情,而无需查询的MySQL在所有.

例如:

MySQL哈希 - > 464bb2cb3cf18b66

MySQL5哈希 - >*01D01F5CA7CA8BA771E03F4AC55EC73C11EFA229

谢谢!

我最初在我自己搜索两个MySQL密码散列函数的PHP实现时偶然发现了这个问题.我无法找到任何实现,所以我从MySQL源代码(sql/password.c)改编了自己的实现.以下是在PHP 5.2中测试和使用的:

// The following is free for any use provided credit is given where due.
// This code comes with NO WARRANTY of any kind, including any implied warranty.

/**
 * MySQL "OLD_PASSWORD()" AKA MySQL323 HASH FUNCTION
 * This is the password hashing function used in MySQL prior to version 4.1.1
 * By Defines Fineout 10/9/2009 9:12:16 AM
**/
function mysql_old_password_hash($input, $hex = true)
{
  $nr = 1345345333; $add = 7; $nr2 = 0x12345671; $tmp = null;
  $inlen = strlen($input);
  for ($i = 0; $i < $inlen; $i++) {
    $byte = substr($input, $i, 1);
    if ($byte == ' ' || $byte == "\t") continue;
    $tmp = ord($byte);
    $nr ^= ((($nr & 63) + $add) * $tmp) + (($nr << 8) & 0xFFFFFFFF);
    $nr2 += (($nr2 << 8) & 0xFFFFFFFF) ^ $nr;
    $add += $tmp;
  }
  $out_a = $nr & ((1 << 31) - 1);
  $out_b = $nr2 & ((1 << 31) - 1);
  $output = sprintf("%08x%08x", $out_a, $out_b);
  if ($hex) return $output;
  return hex_hash_to_bin($output);
} //END function mysql_old_password_hash

/**
 * MySQL "PASSWORD()" AKA MySQLSHA1 HASH FUNCTION
 * This is the password hashing function used in MySQL since version 4.1.1
 * By Defines Fineout 10/9/2009 9:36:20 AM
**/
function mysql_password_hash($input, $hex = true)
{
  $sha1_stage1 = sha1($input, true);
  $output = sha1($sha1_stage1, !$hex);
  return $output;
} //END function mysql_password_hash

/**
 * Computes each hexidecimal pair into the corresponding binary octet.
 * Similar to mysql hex2octet function.
**/
function hex_hash_to_bin($hex)
{
  $bin = "";
  $len = strlen($hex);
  for ($i = 0; $i < $len; $i += 2) {
    $byte_hex = substr($hex, $i, 2);
    $byte_dec = hexdec($byte_hex);
    $byte_char = chr($byte_dec);
    $bin .= $byte_char;
  }
  return $bin;
} //END function hex_hash_to_bin

希望其他人会发现这也很有用:)

如果您对此函数的算法感兴趣,请下载源代码并查看文件sql/password.c,或检查此实现.

是的,为时已晚,但我刚刚在该页面上提出了这个实现:http://dev.mysql.com/doc/refman/5.1/en/password-hashing.html

这是mysql密码的等效php函数;

function mysql_41_password($in) {
    $p = sha1($in, true);
    $p = sha1($p);
    return '*'. strtoupper($p);
}