php EAS CBC 128 256加密(16进制/base64)

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addPkcs7Padding($str) , MCRYPT_MODE_CBC, $iv));
    }

    /**
     * 除去pkcs7 padding
     *
     * @param String 解密后的结果
     *
     * @return String
     */
    private function stripPkcs7Padding($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;
        }
    }
    /**
     * 解密
     *
     * @param String $encryptedText 二进制的密文
     * @param String $iv 加密时候的IV
     * @param String $key 密钥
     * @return String
     */
    function aes256cbcDecrypt($encryptedText, $iv, $key) {
        $encryptedText =base64_decode($encryptedText);

        return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $encryptedText, MCRYPT_MODE_CBC, $iv));
    }

    function aes128cbcDecrypt($encryptedText, $iv=self::IV, $key=self::KEY) {
        $encryptedText =base64_decode($encryptedText);
        return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encryptedText, MCRYPT_MODE_CBC, $iv));
    }

    function hexToStr($hex)//十六进制转字符串
    {
        $string="";
        for($i=0;$ihexToStr($encryptedText);
        return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_CBC, $iv));
    }

    function aes128cbcEncrypt($str, $iv=self::IV, $key=self::KEY ) {    // $this->addPkcs7Padding($str,16)
        $base = (mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key,$this->addPkcs7Padding($str,16) , MCRYPT_MODE_CBC, $iv));
        return $this->strToHex($base);
    }
    function aes129cbcEncrypt($str, $iv=self::IV, $key=self::KEY ) {    // $this->addPkcs7Padding($str,16)
        $base = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key,$this->addPkcs7Padding($str,16) , MCRYPT_MODE_CBC, $iv));
        return $base;
    }

}