统一认证加密及签名参数校验

1 、openssl

//aes加密
$key = '7dD11GshBatrxKdt';
$input = '13579265781';

//aes解密
$encrypted_value = openssl_encrypt($input, 'AES-128-ECB', $key, 1);
echo openssl_decrypt( $encrypted_value , "AES-128-ECB" , $key  ,  1);
exit;

　　

//aes加密
$key = 'EipM7zsDJ32mR0NK';
$input = '13928892857';

echo bin2hex(openssl_encrypt($input, 'AES-128-ECB', md5($key, true), OPENSSL_RAW_DATA));
exit;

说明：OPENSSL_RAW_DATA表示加密后输出原始的二进制数据，类似 Java种的byte[]，bin2hex函数是将二进制数据转成16进制编码数据，md5(xxx, true)表示16位小写。

2、mcrypt

<?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, '', MCRYPT_MODE_ECB, '');
       $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($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 , md5($key,true) );
echo $value."\n";
echo Security::decrypt($value, md5($key,true));

3、签名的算法

function getMac($request) {
        //字典排序
        ksort($request['header']);
        ksort($request['body']);
        ksort($request);
        
        //md5 16位
        $string = md5(json_encode($request), true);

        //HmacSHA256 加密
        $encrty = hash_hmac('sha256', $string, md5('EipM7zsDJ32mR0NK', true), true);
        
        //转成16进制
        return bin2hex($encrty);
    }