[Python知识库]python编程快速上手办公自动化_关于暴力破解pdf口令程序的解答

#! python3
# 暴力PDF口令破解程序.py
import PyPDF2
import threading
import pyperclip	# 复制到粘贴栏，方便查询密码
active = False		# 表示未找到密码
 # 大写形式
pdfObj = open("encrypted.pdf", "rb")
readerObj = PyPDF2.PdfFileReader(pdfObj)
textObj = open("dictionary.txt", "rt")
for line in textObj.readlines():
    if readerObj.decrypt(line[0:-1]):	# 末尾有换行符，应去除
        print("解密成功！密码：",line[0:-1])
        active = True
        pyperclip.copy(line[0:-1])
        exit(0)
    else:
        print("解密失败！密码：",line[0:-1])
# 小写形式
if active == False:
	for line in textObj.readlines():
    	if readerObj.decrypt(line.lower()[0:-1]):
        	print("解密成功！密码：",line.lower()[0:-1])
        	pyperclip.copy(line.lower()[0:-1])
        	exit(0)
    	else:
        	print("解密失败！密码：",line.lower()[0:-1])
pdfObj.close()
textObj.close()

利用多线程版

#! python3
# 暴力PDF口令破解程序.py
import PyPDF2
import threading
import pyperclip
def upperDecode():
    # 大写形式
    pdfObj = open("encrypted.pdf", "rb")
    readerObj = PyPDF2.PdfFileReader(pdfObj)
    textObj = open("dictionary.txt", "rt")
    for line in textObj.readlines():
        if readerObj.decrypt(line[0:-1]):
            print("解密成功！密码：",line[0:-1])
            pyperclip.copy(line[0:-1])
            exit(0)
        else:
            print("解密失败！密码：",line[0:-1])
def lowerDecode():
    # 小写形式
    pdfObj = open("encrypted.pdf", "rb")
    readerObj = PyPDF2.PdfFileReader(pdfObj)
    textObj = open("dictionary.txt", "rt")
    for line in textObj.readlines():
        if readerObj.decrypt(line.lower()[0:-1]):
            print("解密成功！密码：",line.lower()[0:-1])
            pyperclip.copy(line.lower()[0:-1])
            exit(0)
        else:
            print("解密失败！密码：",line.lower()[0:-1])
    pdfObj.close()
    textObj.close()

threadObj1 = threading.Thread(target=upperDecode)
threadObj2 = threading.Thread(target=lowerDecode)
threadList = [threadObj1,threadObj2]
threadObj1.start()
threadObj2.start()
for threadObj in threadList:
    threadObj.join()

注：最终密码是小写的“rosebud”