字符串加解密

追影

1. //字符串加解密
   
2. function encrypt_decrypt($string, $action = 'encrypt')
   
3. {
   
4.     $secret_key = 'key';
   
5.     $secret_iv = 'iv';
   
6.     $output = false;
   
7.     $encrypt_method = "AES-256-CBC";
   
8.     $key = hash('sha256', $secret_key);
   
9.     $iv = substr(hash('sha256', $secret_iv), 0, 16);
   
10.     if ($action == 'encrypt') {
    
11.         $output = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
    
12.         $output = base64_encode($output);
    
13.     } else if ($action == 'decrypt') {
    
14.         $output = openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
    
15.     }
    
16.     return $output;
    
17. }

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