3WsmZhL4

1public function data_encrypt_decrypt($string, $action,$secret_key,$secret_iv) {
2    
3        
4        $output = false;
5        $encrypt_method = "AES-256-CBC";
6        $key = hash( 'sha256', $secret_key );
7        $iv = substr( hash( 'sha256', $secret_iv ), 0, 16 );
8    
9        if( $action == 'e' ) {
10            $output = base64_encode( openssl_encrypt( $string, $encrypt_method, $key, 0, $iv ) );
11        }
12        else if( $action == 'd' ){
13            $output = openssl_decrypt( base64_decode( $string ), $encrypt_method, $key, 0, $iv );
14        }
15    
16        return $output;
17}