AES加密

加密

function zAES_encrypt($str, $privateKey = "1234567812345678", $iv = "1234567812345678") {
    $encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $privateKey, $str, MCRYPT_MODE_CBC, $iv);
    return base64_encode($encrypted);
}

注：$iv 的長度根據 mcrypt_encrypt 方法中的第一個引數和第四個引數決定
    $iv_size
 
 = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);

解密

function zAES_decrypt($str, $privateKey = "1234567812345678", $iv = "1234567812345678") {
    $encryptedData = base64_decode($str);
    return mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $privateKey, $encryptedData, MCRYPT_MODE_CBC, $iv);
}
 

偽AES加密

加密

function encrypt($data, $key)  
{  
    $key    =   md5($key);  
    $x      =   0;  
    $len    =   strlen($data);  
    $l      =   strlen($key);  
    for ($i = 0; $i < $len; $i++)  
    {  
        if ($x == $l)   
        {  
            $x = 0;  
        }  
        $char
 
 .= $key{$x};  
        $x++;  
    }  
    for ($i = 0; $i < $len; $i++)  
    {  
        $str .= chr(ord($data{$i}) + (ord($char{$i})) % 256);  
    }  
    return base64_encode($str);  
}

解密

function decrypt($data, $key)  
{  
    $key = md5($key);  
    $x = 0;  
    $data = base64_decode($data);  
    $len = strlen($data);  
    $l = strlen($key);  
    for ($i = 0; $i < $len; $i++)  
    {  
        if ($x == $l)   
        {  
            $x = 0;  
        }  
        $char .= substr($key, $x, 1);  
        $x++;  
    }  
    for ($i = 0; $i < $len; $i++)  
    {  
        if (ord(substr($data, $i, 1)) < ord(substr($char, $i, 1)))  
        {  
            $str .= chr((ord(substr($data, $i, 1)) + 256) - ord(substr($char, $i, 1)));  
        }  
        else  
        {  
            $str .= chr(ord(substr($data, $i, 1)) - ord(substr($char, $i, 1)));  
        }  
    }  
    return $str;  
}