EDIFACT - S/MIME Create, Sign, and Encrypt

Create an EDIFACT MIME message, signs it, and then encrypts.

 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()

#  Assuming  you have an EDIFACT document loaded into
#  a string variable, set the MIME body with it:
ediBody = "UNB+IATB:1+6XPPC+LHPPC+940101:0950+1' ..."
mime.SetBodyFromPlainText(ediBody)

#  The call to SetBodyFromPlainText automatically set the
#  content-type to "text/plain".
#  However, we want:  application/edifact;  name=om080923.edi
mime.put_ContentType("application/edifact")
mime.put_Name("om080923.edi")

#  We want the content-disposition to be:
#  Content-Disposition: attachment; filename="om080923.edi"
mime.put_Disposition("attachment")
mime.put_Filename("om080923.edi")

#  Content-Transfer-Encoding: quoted-printable
mime.put_Encoding("quoted-printable")

#  Note: MIME header fields are case insensitive.

#  Add a few other header fields:
mime.AddHeaderField("Message-ID","<CHILKAT-MID-83cf2fbf-10cb-4322-ad79-4c1097fd56f2@Matt>")
mime.AddHeaderField("MIME-VERSION","1.0")

#  Display the complete non-signed, non-encrypted MIME:
print mime.getMime()
print "*********************************************"

#  Sign the MIME using an opaque signature.
#  (but first load a certificate)
cert = chilkat.CkCert()
success = cert.LoadByCommonName("Chilkat Software, Inc.")
if (success == False):
    print cert.lastErrorText()
    sys.exit()

success = mime.ConvertToSigned(cert)
if (success == False):
    print mime.lastErrorText()
    sys.exit()

#  Perhaps the receiver is picky and wants the content-type to be "application/pkcs7-mime"
#  instead of "application/x-pkcs7-mime".  In that case, simply set the content-type:
mime.put_ContentType("applicaton/pkcs7-mime")

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

#  Now encrypt it.
encryptCert = chilkat.CkCert()
success = encryptCert.LoadByCommonName("speedi speedi")
if (success == False):
    print encryptCert.lastErrorText()
    sys.exit()

success = mime.Encrypt(encryptCert)
if (success == False):
    print mime.lastErrorText()
    sys.exit()

#  Again, if receiver is picky and wants the content-type to be "application/pkcs7-mime"
#  instead of "application/x-pkcs7-mime".  In that case, simply set the content-type:
mime.put_ContentType("applicaton/pkcs7-mime")

#  Display the signed/encrypted MIME
print mime.getMime()
print "*********************************************"

#  Save the MIME to a file:
success = mime.SaveMime("edifact_smime.txt")
if (success == False):
    print mime.lastErrorText()
    sys.exit()

print "Success!"