DES 加密

 NSString* string =  [desencryptWithContent:[NSStringstringWithFormat:@"%@",LNYUserID]type:kCCEncryptkey:@"asdasda"];

    NSLog(@"%@",string);

    NSString* string1 =  [desencryptWithContent:[NSStringstringWithFormat:@"%@",string]type:kCCDecryptkey:@"asdasda"];