private void setFiles(String[] args) {
		// TODO
		if (args[0] != "-x") {
			if (args.length == 4) {
				cipher = args[1];
				blockmode = args[2];
				infile = args[3];
				firstoutfile = args[4] + ".txt";
				finaloutfile = args[4] + "_final.txt";
			} else if (args.length == 4) {
				cipher = args[1];
				blockmode = args[2];
				infile = args[3];
			} else if (args.length == 3) {
				cipher = args[1];
				blockmode = args[2];
			} else if (args.length == 2) {
				cipher = args[1];
			}
		} else {
			if (args.length == 4) {
				infile = args[2];
				firstoutfile = args[3] + ".txt";
				finaloutfile = args[3] + "_final.txt";
			} else if (args.length == 3) {
				infile = args[2];
			}
		}
	}