这是一个类似于记事本的文字处理器。与正常的记事本不同的是,它会将文本文档进行加密,确保无法被常规的程序打开。
由于本人是一位业余编程爱好者,对于“python之禅”之类的规则比较不以为然,因此本程序代码也许有些许凌乱(当然不利于后期修改)。
这篇文章我早已发布过,但当时只给出了代码,并加了一些注释。现在,我希望在这里详细解释这个程序。我会分一个月或更久更新这篇文章,请读者耐心等待。
首先,对于一个适合我们广大中华儿女使用的程序,我们不可避免地要使用中文。这就需要对编码进行声明:
# coding:utf-8
然后,就到了模块导入的环节了。我们这里需要tkinter,windnd,os和sys。windnd可以用pip安装,tkinter则需要在安装python时勾选:
from tkinter import *
from tkinter.filedialog import *
from tkinter.messagebox import *
import windnd
import os
import sys
接下来,我们会看到这样一段代码:
try:
filename = sys.argv[1]
except:
filename = ""
这是干什么的呢?我们知道,对于exe程序,有一个“Open with”功能,也就是可以将拖动到exe文件或其快捷方式的文件打开。事实上,py文件也有这个功能,但是多数情况下这样操作后只能使程序正常运行,而不能对文件进行任何操作。而“sys.argv[1]”的作用就是,读取这个文件的路径信息。这样,我们就可以用open或sys库里的一些指令进行对文件的操作了。
def encryption(c, d):
c = list(c + d)
g=list(d)
d=0
for i in g:
d*=ord(i)
d=round(abs(d)**0.5)
f="0x"
for i in c:
e=str(ord(i)+d)
d=round(300*(d**0.5))
f=f+e+"a"
f=eval(f[:-1])
return (f)
def decrypt(c,d):
c=hex(int(c))
print(c)
c=c[2:].split("a")
z=d
g = list(d)
d = 0
for i in g:
d *= ord(i)
d = round(abs(d) ** 0.5)
f=""
for i in c:
e = chr(int(i)-d)
d = round(300 * (d ** 0.5))
f = f + e
if f[-len(z):]==z:
f=f[:-len(z)]
return (f)
else:
c="bbc"+12
这一段就比较劲爆了。它定义了两个函数,一个用于加密,另外一个用于解密(顺便说一句,我英语不太好,有的函数或变量的名字可能比较古怪,请见谅)。
encryption是加密的函数(呃,这个应该叫做encrypt,我编这个程序时大脑有些短路,但既然已经这样了,也就不改了),它会将明文(输入的c)通过与密钥d有关的某些运算,得出一个十六进制数,然后将其转化为十进制。同时,为了确保解密结果唯一,将密钥一起连接在明文上,起校验作用。在这里,对于明文的每一个字符都会将加密过程中实际使用的密钥进行变动,因此基本是不可能通过字符出现频率的规律来破解的。由于密钥是字符,暴力拆解也基本不可能。
decrypt是解密,它大致就是encryption的逆操作,同时如果校验的结果有误,或是遇到其他解密失败的情况它会产生错误(因此使用时需要try-except,来确保程序不会退出,同时对解密失败的情况进行处理)。
接下来是基本的文件操作部分:
def mynew(aaa=1):
global top, filename, textPad
top.title("无标题 - 加密文本编辑器")
filename = None
textPad.delete(1.0, END)
textPad.insert(1.0, "")
def myopen(aaa=1):
global filename,kkk
filename = askopenfilename()
if filename == "":
filename = None
else:
top.title(os.path.basename(filename)+" - 加密文本编辑器")
format=os.path.basename(filename)[os.path.basename(filename).find(".")+1:]
textPad.delete(1.0, END)
try:
f = open(filename, 'rb')
c = f.read()
ccc = str(c)[2:-1]
ccc.replace("\\","")
textPad.insert(1.0,decrypt(ccc,format))
kkk=1
except:
f.close()
try:
f = open(filename, 'r', encoding="gbk")
try:
c = f.read()
except:
f.close()
f = open(filename, 'r', encoding="utf-8")
c = f.read()
textPad.insert(1.0, c)
kkk = 0
except:
f.close()
f = open(filename, 'rb')
c = f.read()
textPad.insert(1.0, c)
kkk=0
f.close()
def mysave(aaa=1):
global filename,kkk
try:
msg = textPad.get(1.0, 'end')[0:-1]
if kkk==0:
f = open(filename, 'w', encoding="utf-8")
f.write(msg)
else:
f = open(filename, 'wb')
fffff = str(encryption(msg, format))
fffff = eval("b'{}'".format(fffff))
print(fffff)
f.write(fffff)
f.close()
except:
mysaveas()
def mysaveas(aaa=1):
global filename
f = asksaveasfilename(initialfile="无标题.txt")
filename = f
format = os.path.basename(filename)[os.path.basename(filename).find(".") + 1:]
msg = textPad.get(1.0, 'end')[0:-1]
if not format == "py" and not format=="bat" and not format == "pyw"and not format == "cmd":
fh = open(filename, 'wb')
fffff = str(encryption(msg, format))
fffff = eval("b'{}'".format(fffff))
print(fffff)
fh.write(fffff)
else:
fh = open(filename, 'w', encoding="utf-8")
fh.write(msg)
fh.close()
top.title(os.path.basename(f)+" - 加密文本编辑器")
def opened(files):
global filename,kkk
ff = '\n'.join((item.decode('gbk') for item in files))
filename = ff
if filename == "":
filename = None
else:
top.title(os.path.basename(filename) + " - 加密文本编辑器")
format = os.path.basename(filename)[os.path.basename(filename).find(".") + 1:]
textPad.delete(1.0, END)
try:
f = open(filename, 'rb')
c = f.read()
ccc = str(c)[2:-1]
ccc.replace("\\", "")
textPad.insert(1.0, decrypt(ccc, format))
kkk = 1
except:
f.close()
try:
f = open(filename, 'r', encoding="gbk")
try:
c = f.read()
except:
f.close()
f = open(filename, 'r', encoding="utf-8")
c = f.read()
textPad.insert(1.0, c)
kkk = 0
except:
f.close()
f = open(filename, 'rb')
c = f.read()
textPad.insert(1.0, c)
kkk = 0
f.close()
def mynew(aaa=1):
global top, filename, textPad
top.title("无标题 - 加密文本编辑器")
filename = None
textPad.delete(1.0, END)
textPad.insert(1.0, "")
首先说mynew。这里有一个可选参数a,这是因为通过bind激活函数会输入一个参数(这点我非常反感),为了不让程序运行出错,就添加了一个可选参数。这个其实没啥好说。global后面是所需的全局变量,然后就是设置窗口名称、文件名称,并清空输入框,很简单,很明了。
def myopen(aaa=1):
global filename,kkk
filename = askopenfilename()
if filename == "":
filename = None
else:
top.title(os.path.basename(filename)+" - 加密文本编辑器")
format=os.path.basename(filename)[os.path.basename(filename).find(".")+1:]
textPad.delete(1.0, END)
try:
f = open(filename, 'rb')
c = f.read()
ccc = str(c)[2:-1]
ccc.replace("\\","")
textPad.insert(1.0,decrypt(ccc,format))
kkk=1
except:
f.close()
try:
f = open(filename, 'r', encoding="gbk")
try:
c = f.read()
except:
f.close()
f = open(filename, 'r', encoding="utf-8")
c = f.read()
textPad.insert(1.0, c)
kkk = 0
except:
f.close()
f = open(filename, 'rb')
c = f.read()
textPad.insert(1.0, c)
kkk=0
f.close()
然后就是myopen。“filename=askopenfilename()”就是,弹出一个选择打开的文件的窗口,并将结果存入filename。然后我们获取文件的后缀信息,作为解密所需的密钥。接下来,我们先尝试解密文件。如果执行中有错误,也就是无法解密,则用gbk编码正常打开,仍然打开失败,则使用utf-8。当然,如果都失败了,就用rb模式,也就是字节流的形式打开。
啊,越讲越上头,超过了我预期的篇幅……好了,现在先讲到这里,等待下一次更新吧(本人初二,因此接触电脑机会不多,更新嘛,自然是比较慢的。耐心等待!耐心等待!!!)!
完整的代码:
# coding:utf-8
from tkinter import *
from tkinter.filedialog import *
from tkinter.messagebox import *
import windnd
import os
import sys
kkk=1
try:
filename = sys.argv[1]
except:
filename = ""
def encryption(c, d):
c = list(c + d)
g=list(d)
d=0
for i in g:
d*=ord(i)
d=round(abs(d)**0.5)
f="0x"
for i in c:
e=str(ord(i)+d)
d=round(300*(d**0.5))
f=f+e+"a"
f=eval(f[:-1])
return (f)
def decrypt(c,d):
c=hex(int(c))
print(c)
c=c[2:].split("a")
z=d
g = list(d)
d = 0
for i in g:
d *= ord(i)
d = round(abs(d) ** 0.5)
f=""
for i in c:
e = chr(int(i)-d)
d = round(300 * (d ** 0.5))
f = f + e
if f[-len(z):]==z:
f=f[:-len(z)]
return (f)
else:
c="bbc"+12
def mynew(aaa=1):
global top, filename, textPad
top.title("无标题 - 加密文本编辑器")
filename = None
textPad.delete(1.0, END)
textPad.insert(1.0, "")
def myopen(aaa=1):
global filename,kkk
filename = askopenfilename()
if filename == "":
filename = None
else:
top.title(os.path.basename(filename)+" - 加密文本编辑器")
format=os.path.basename(filename)[os.path.basename(filename).find(".")+1:]
textPad.delete(1.0, END)
try:
f = open(filename, 'rb')
c = f.read()
ccc = str(c)[2:-1]
ccc.replace("\\","")
textPad.insert(1.0,decrypt(ccc,format))
kkk=1
except:
f.close()
try:
f = open(filename, 'r', encoding="gbk")
try:
c = f.read()
except:
f.close()
f = open(filename, 'r', encoding="utf-8")
c = f.read()
textPad.insert(1.0, c)
kkk = 0
except:
f.close()
f = open(filename, 'rb')
c = f.read()
textPad.insert(1.0, c)
kkk=0
f.close()
def mysave(aaa=1):
global filename,kkk
try:
msg = textPad.get(1.0, 'end')[0:-1]
if kkk==0:
f = open(filename, 'w', encoding="utf-8")
f.write(msg)
else:
f = open(filename, 'wb')
fffff = str(encryption(msg, format))
fffff = eval("b'{}'".format(fffff))
print(fffff)
f.write(fffff)
f.close()
except:
mysaveas()
def mysaveas(aaa=1):
global filename
f = asksaveasfilename(initialfile="无标题.txt")
filename = f
format = os.path.basename(filename)[os.path.basename(filename).find(".") + 1:]
msg = textPad.get(1.0, 'end')[0:-1]
if not format == "py" and not format=="bat" and not format == "pyw"and not format == "cmd":
fh = open(filename, 'wb')
fffff = str(encryption(msg, format))
fffff = eval("b'{}'".format(fffff))
print(fffff)
fh.write(fffff)
else:
fh = open(filename, 'w', encoding="utf-8")
fh.write(msg)
fh.close()
top.title(os.path.basename(f)+" - 加密文本编辑器")
def opened(files):
global filename,kkk
ff = '\n'.join((item.decode('gbk') for item in files))
filename = ff
if filename == "":
filename = None
else:
top.title(os.path.basename(filename) + " - 加密文本编辑器")
format = os.path.basename(filename)[os.path.basename(filename).find(".") + 1:]
textPad.delete(1.0, END)
try:
f = open(filename, 'rb')
c = f.read()
ccc = str(c)[2:-1]
ccc.replace("\\", "")
textPad.insert(1.0, decrypt(ccc, format))
kkk = 1
except:
f.close()
try:
f = open(filename, 'r', encoding="gbk")
try:
c = f.read()
except:
f.close()
f = open(filename, 'r', encoding="utf-8")
c = f.read()
textPad.insert(1.0, c)
kkk = 0
except:
f.close()
f = open(filename, 'rb')
c = f.read()
textPad.insert(1.0, c)
kkk = 0
f.close()
top = Tk()
top.title("无标题 - 加密文本编辑器")
top.geometry("1000x600+100+50")
menubar = Menu(top)
menubar.add_command(label="新建", command=mynew)
menubar.add_command(label="打开", command=myopen)
menubar.add_command(label="保存", command=mysave)
menubar.add_command(label="另存为", command=mysaveas)
menu = Menu(top, tearoff=False)
menu.add_command(label="新建", accelerator="Ctrl+N", command=mynew)
menu.add_command(label="打开", accelerator="Ctrl+O", command=myopen)
menu.add_command(label="保存", accelerator="Ctrl+S", command=mysave)
menu.add_command(label="另存为", accelerator="Ctrl+Shift+S", command=mysaveas)
def command(event):
menu.post(event.x_root, event.y_root)
top['menu'] = menubar
all=Frame(top)
all.pack(expand=YES, fill=BOTH)
textPad = Text(all,font=('宋体', 14), undo=True)
if filename == "":
filename = None
textPad.insert(1.0, "")
else:
top.title(os.path.basename(filename) + " - 加密文本编辑器")
format = os.path.basename(filename)[os.path.basename(filename).find(".") + 1:]
textPad.delete(1.0, END)
try:
f = open(filename, 'rb')
c = f.read()
ccc = str(c)[2:-1]
ccc.replace("\\", "")
textPad.insert(1.0, decrypt(ccc, format))
kkk = 1
except:
f.close()
try:
f = open(filename, 'r', encoding="gbk")
try:
c = f.read()
except:
f.close()
f = open(filename, 'r', encoding="utf-8")
c = f.read()
textPad.insert(1.0, c)
kkk = 0
except:
f.close()
f = open(filename, 'rb')
c = f.read()
textPad.insert(1.0, c)
kkk = 0
f.close()
scroll = Scrollbar(all)
textPad.config(yscrollcommand=scroll.set)
scroll.config(command=textPad.yview)
scroll.pack(side=RIGHT, fill=Y)
textPad.pack(expand=YES,side=RIGHT,fill=BOTH)
top.bind("<Control-N>", mynew)
top.bind("<Control-n>", mynew)
top.bind("<Control-O>", myopen)
top.bind("<Control-o>", myopen)
top.bind("<Control-S>", mysave)
top.bind("<Control-s>", mysave)
top.bind("<Control-Shift-S>", mysaveas)
top.bind("<Control-Shift-s>", mysaveas)
top.bind("<Button-3>", command)
windnd.hook_dropfiles(top,func=opened)
top.mainloop()
总结
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