Sample code for PHP to interface with Java's AES/ECB/PKCS5Padding encryption method (picture)

<?php
class Security {
    public static function encrypt($input, $key) {
    $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
    $input = Security::pkcs5_pad($input, $size);
    $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, &#39;&#39;, MCRYPT_MODE_ECB, &#39;&#39;);
    $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
    mcrypt_generic_init($td, $key, $iv);
    $data = mcrypt_generic($td, $input);
    mcrypt_generic_deinit($td);
    mcrypt_module_close($td);
    $data = base64_encode($data);
    return $data;
    }
  
    private static function pkcs5_pad ($text, $blocksize) {
        $pad = $blocksize - (strlen($text) % $blocksize);
        return $text . str_repeat(chr($pad), $pad);
    }
  
    public static function decrypt($sStr, $sKey) {
        $decrypted= mcrypt_decrypt(
        MCRYPT_RIJNDAEL_128,
        $sKey,
        base64_decode($sStr),
        MCRYPT_MODE_ECB
    );
 
        $dec_s = strlen($decrypted);
        $padding = ord($decrypted[$dec_s-1]);
        $decrypted = substr($decrypted, 0, -$padding);
        return $decrypted;
    }  
}
  
  
  
// $key = "1234567891234567";
// $data = "example";
  
// $value = Security::encrypt($data , $key );
// echo "加密：：".$value.&#39;<br/>&#39;;
// echo Security::decrypt($value, $key );

/**
     * request body加密
     * @param array $content 投保人的信息
     * @return string
     */
    function hetai_encrypt($content) {
         
        // 方案七
        print_r("\r\n");
        vendor('encrypt.Security') or die("方案7引入失败");
        $sec = new \Security();
        $string = $content;
        $sec_res = $sec->encrypt($string, base64_decode("eeSvvVtUDLi5lTBHDjCeFw=="));
        $sec_res = strToHex($sec_res);// 结果转16进制并转成大写
        // 这里做了好几次的转换
        // 只是为了迎合出来我需要的结果而已
        // 根据自己的加密要求来定
        $encrypt_upper = strToHex(base64_decode(hexToStr($sec_res)));
        var_dump("\r\n方案7加密的结果\r\n" . $encrypt_upper);
        // 解密
        $sec_res_lower = strtolower($sec_res);// 转小写
        $sec_res_lower_tostr = hexToStr($sec_res);// 16进制转成string
        $sec_dec = $sec->decrypt($sec_res_lower_tostr, base64_decode("eeSvvVtUDLi5lTBHDjCeFw=="));
        var_dump("\r\n方案7解密的结果\r\n" . $sec_dec);
        return $encrypt_upper;
         
    }

/**
     * 字符串转十六进制
     * @param string $string
     * @return string
     */
    function strToHex($string)
    {
        $hex="";
        for($i=0;$i<strlen($string);$i++)
            $hex.=dechex(ord($string[$i]));
        $hex=strtoupper($hex);
        return $hex;
    }
     
    /**
     * 十六进制转字符串
     * 16进制的转为2进制字符串    
     * @param 十六进制 $hex
     * @return string
     */
    function hexToStr($hex)
    {
        $string="";
        for($i=0;$i<strlen($hex)-1;$i+=2)
            $string.=chr(hexdec($hex[$i].$hex[$i+1]));
        return  $string;
    }