?? arccode.c
字號:
/* * $Header: arccode.c,v 1.1 88/06/01 15:15:58 hyc Locked $ *//* * ARC - Archive utility - ARCCODE * * Version 1.02, created on 01/20/86 at 13:33:35 * * (C) COPYRIGHT 1985 by System Enhancement Associates; ALL RIGHTS RESERVED * * By: Thom Henderson * * Description: This file contains the routines used to encrypt and decrypt data * in an archive. The encryption method is nothing fancy, being just a * routine XOR, but it is used on the packed data, and uses a variable length * key. The end result is something that is in theory crackable, but I'd * hate to try it. It should be more than sufficient for casual use. * * Language: Computer Innovations Optimizing C86 */#include <stdio.h>#include "arc.h"static char *p; /* password pointer */voidsetcode(){ /* get set for encoding/decoding */ p = password; /* reset password pointer */}unsigned charcode(c) /* encode some character */ char c; /* character to encode */{ if (p) { /* if password is in use */ if (!*p) /* if we reached the end */ p = password; /* then wrap back to the start */ return c ^ *p++;/* very simple here */ } else return c; /* else no encryption */}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -