(Chilkat2-Python) Load .eml and Decrypt (smime.p7m)

Loads an encrypted email from a .eml file and decrypts using certificate w/ private key found in a .p12 (or .pfx) file.

The Content-Type and Content-Disposition email headers of the email to be decrypted look similar to this:

Content-Type: application/x-pkcs7-mime; smime-type=enveloped-data;
	name="smime.p7m"
Content-Disposition: attachment; filename="smime.p7m"

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import sys
import chilkat2

email = chilkat2.Email()

# Add a PFX (or .p12) to be used for decryption
success = email.AddPfxSourceFile("myCert.p12","passwordForP12")
if (success != True):
    print(email.LastErrorText)
    sys.exit()

# Loading the .eml automatically decrypts.
success = email.LoadEml("encrypted.eml")
if (success != True):
    print(email.LastErrorText)
    sys.exit()

# The email now exists as it was prior to encryption.
# Your app may access the email's subject, body, attachments,
# etc. using the Chilkat Email API...

# Save the decrypted email:
success = email.SaveEml("decrypted.eml")
if (success != True):
    print(email.LastErrorText)
    sys.exit()

print("Success.")