python实现文件快照加密保护，,# Hello, thi

python实现文件快照加密保护，,# Hello, thi

# 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')