(Python) S/MIME Signed Message

Create an S/MIME signed (PKCS7) message.

Important: This example is specific to the Windows operating system because it obtains the certificate and private key from the Windows registry-based certificate store. For other operating systems, see the PKCS7 signature examples that use PFX (.p12) files.

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

import sys
import chilkat

mime = chilkat.CkMime()

success = mime.UnlockComponent("Anything for 30-day trial.")
if (success == False):
    print mime.lastErrorText()
    sys.exit()

mime.AddHeaderField("Subject","This is a test")
mime.AddHeaderField("Abc","123")

mime.SetBodyFromPlainText("This is the body")

cert = chilkat.CkCert()
#  Load a certificate that has already been installed (from a .pfx)
#  on the computer:
success = cert.LoadByEmailAddress("thawte@chilkatsoft.com")
if (success == False):
    print cert.lastErrorText()
    sys.exit()

#  Convert to a signed message.
success = mime.ConvertToSigned(cert)
if (success == False):
    print mime.lastErrorText()
    sys.exit()

#  Display the signed MIME:
print mime.getMime()

print "----"

#  Unwrap to restore the original MIME.
success = mime.UnwrapSecurity()
if (success == False):
    print mime.lastErrorText()
    sys.exit()

#  Display the restored (unsigned) MIME:
print mime.getMime()