(Python) Extract a File from a .p7m (PKCS7 Signed-Data)

Python example to extract the original file from a .p7m (Signed-Data PKCS7 Format) The .p7m contains the signed contents of the original file. It can be verified and restored by calling VerifyP7M.

 Chilkat Python Module Downloads for Windows, Linux, and MAC OS X

import sys
import chilkat

crypt = chilkat.CkCrypt2()

#  Any string argument automatically begins the 30-day trial.
success = crypt.UnlockComponent("30-day trial")
if (success != True):
    print crypt.lastErrorText()
    sys.exit()

outFile = "/Users/chilkat/testData/pdf/sample.pdf"
inFile = "/Users/chilkat/testData/p7m/sample.pdf.p7m"

#  Verify and restore the original file:
success = crypt.VerifyP7M(inFile,outFile)
if (success == False):
    print crypt.lastErrorText()
    sys.exit()

print "Success!"