php/app/controller/Aes.php

<?php
namespace app\controller;

class Aes{

    //key长度应该为16
    public static $key = "rb!nBwXv4C%Gr^84";

    //iv长度应该为16
    public static $iv = "GTC9fC6JABup4EBA";

    //配合Java端，使用128位，256位java端默认是不支持的
    public static $Method = 'AES-128-CBC';

    // AES加密
    public static function encrypt($cleartext,$key = '',$iv = ''){
        $key = empty($key) ? self::$key : $key;
        $iv = empty($iv) ? self::$iv : $iv;
        $encrypted = openssl_encrypt($cleartext, self::$Method, $key, OPENSSL_RAW_DATA,$iv);
        return base64_encode($encrypted);
    }

    //AES解密
    public static function decrypt($encrypted,$key = ''){
        $key = empty($key) ? self::$key : $key;
        $iv = empty($iv) ? self::$iv : $iv;
        $encrypted = base64_decode($encrypted);
        $decrypted = openssl_decrypt($encrypted, self::$Method, $key, OPENSSL_RAW_DATA,$iv);
        return trim($decrypted);
    }

    //PHP 7.0 以上用AES加密
    public static function encrypt7($json_str,$rands){
        $screct_key = $rands;
        $str = trim($json_str);
        $str = self::addPKCS7Padding($str);
        $encrypt_str= openssl_encrypt($str, 'AES-128-ECB', $screct_key, OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING);
        $date = base64_encode($encrypt_str);
        return $date;
    }
    //PHP 7.0以上 AES填充方法
    public static function addPKCS7Padding($string, $blocksize = 16) {
        $len = strlen($string);
        $pad = $blocksize - ($len % $blocksize);
        $string .= str_repeat(chr($pad), $pad);
        return $string;
    }

    //PHP 7.0 AES解密以上用此方法
    public static function decrypt7($responsedatadata,$decrypted){
        $screct_key = $decrypted;
        $encrypt_str=  openssl_decrypt($responsedatadata,"AES-128-ECB",$screct_key);
        $encrypt_str = preg_replace('/[\x00-\x1F]/','', $encrypt_str);
        return json_decode($encrypt_str,true);
    }



}