암호화된 비밀번호가 가끔씩 안되는 경우가 있어요.

<?php
function pw_encrypt($password)
{
    $seed = '';
    
    for ( $i = 1; $i <= 8; $i++ )
    {
        $seed .= substr('0123456789abcdefghijklmnopqrstuvwxyz@#$%^&*', rand(0,15), 1);
    }
    return base64_encode(hex2bin(sha1($seed.$password).$seed));
}

function pw_match_check($password, $password_stored)
{
    $stored_seed = substr(bin2hex(base64_decode($password_stored)),40,8);

    $hash = base64_encode(hex2bin(sha1($stored_seed.$password).$stored_seed));

    if ( $hash === $password_stored)
    {
        return TRUE;
    }
    else
    {
        return FALSE;
    }
}

echo $password_stored = pw_encrypt('password!');
echo '<br>'.PHP_EOL;

var_dump(pw_match_check('password', $password_stored));