Python implements file snapshot encryption and protection,

Python implements file snapshot encryption and protection,

This example describes how to implement file snapshot encryption protection in python. Share it with you for your reference. The details are as follows:

This code can scan a specified directory, including sub-directories. SHA-1 is encrypted for files with the specified extension and stored in the cvs file to prevent file tampering.

Call method: python snapper. py> todayCheck.csv

# Hello, this is a script written in Python. See http://www.pyhon.org## Snapper 1.2p## This script will walk a directory (and its subdirectories) and compute# SHA (Secure Hash Algorithm) for specific files (according to their# extensions) and ouput a CSV file (suited for loading into a spreadsheet# editor,a database or simply comparing with diff or ExamDiff.).## You can redirect the output of this script to a file.# eg. python snapper.py > todayCheck.csv## This script can be usefull to check system files tampering.## This script is public domain. Feel free to reuse it.# The author is:#    Sebastien SAUVAGE#    <sebsauvage at sebsauvage dot net>#    http://sebsauvage.net## More quick & dirty scripts are available at http://sebsauvage.net/python/## Directory to scan and extensions are hardcoded below:directoryStart = r'c:\windows'extensionList=['.exe','.dll','.ini','.ocx','.cpl','.vxd','.drv','.vbx','.com','.bat','.src',        '.sys','.386','.acm','.ax', '.bpl','.bin','.cab','.olb','.mpd','.pdr','.jar']import os,string,sha,stat,sysdef snapper ( directoryStart , extensionList ) :  os.path.walk( directoryStart, snapper_callback, extensionList )def snapper_callback ( extensionList , directory, files ) :  sys.stderr.write('Scanning '+directory+'\n')  for fileName in files:    if os.path.isfile( os.path.join(directory,fileName) ) :      if string.lower(os.path.splitext(fileName)[1]) in extensionList :        filelist.append(fileSHA ( os.path.join(directory,fileName) ))def fileSHA ( filepath ) :  sys.stderr.write(' Reading '+os.path.split(filepath)[1]+'\n')  file = open(filepath,'rb')  digest = sha.new()  data = file.read(65536)  while len(data) != 0:    digest.update(data)    data = file.read(65536)  file.close()  return '"'+filepath+'",'+str(os.stat(filepath)[6])+',"'+digest.hexdigest()+'"'sys.stderr.write('Snapper 1.1p - http://sebsauvage.net/python/\n')filelist = []snapper( directoryStart , extensionList )sys.stderr.write('Sorting...\n')filelist.sort()filelist.insert(0, '"File path","File size","SHA"' )sys.stderr.write('Printing...\n')for line in filelist: print linesys.stderr.write('All done.\n')

I hope this article will help you with Python programming.