TP5 AES加密

public $hex_iv; # converted JAVA byte code in to HEX and placed it here
 
    public $key; #Same as in JAVA
 
    public function __construct() {
                      // 过期时间，天d 月m 年Y
        $this->hex_iv = "00000000"."000000000000000000000000";
        $this->key = "397e2eb61307109f6e68006ebcb62f98";
    }
 
    /*
    public function encrypt($str) {
        $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
        mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv));
        $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
        $pad = $block - (strlen($str) % $block);
        $str .= str_repeat(chr($pad), $pad);
        $encrypted = mcrypt_generic($td, $str);
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
        return base64_encode($encrypted);
    }
    public function decrypt($code) {
        $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
        mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv));
        $str = mdecrypt_generic($td, base64_decode($code));
        $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
        return $this->strippadding($str);
    }*/
 
    public function encrypt($input)
    {
        $data = openssl_encrypt($input, 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA, $this->hexToStr($this->hex_iv));
        $data = base64_encode($data);
        return $data;
    }
 
    public function decrypt($input)
    {
        $decrypted = openssl_decrypt(base64_decode($input), 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA, $this->hexToStr($this->hex_iv));
        return $decrypted;
    }
 
    /*
      For PKCS7 padding
     */
 
    public function addpadding($string, $blocksize = 16) {
 
        $len = strlen($string);
 
        $pad = $blocksize - ($len % $blocksize);
 
        $string .= str_repeat(chr($pad), $pad);
 
        return $string;
 
    }
 
    public function strippadding($string) {
 
        $slast = ord(substr($string, -1));
 
        $slastc = chr($slast);
 
        $pcheck = substr($string, -$slast);
 
        if (preg_match("/$slastc{" . $slast . "}/", $string)) {
 
            $string = substr($string, 0, strlen($string) - $slast);
 
            return $string;
 
        } else {
 
            return false;
 
        }
 
    }
 
    public function hexToStr($hex)
    {
 
        $string='';
 
        for ($i=0; $i < strlen($hex)-1; $i+=2)
 
        {
 
            $string .= chr(hexdec($hex[$i].$hex[$i+1]));
 
        }
 
        return $string;
    }