Chilkat2-Python

Create CAdES-BES .p7m using Smart Card or USB Token

See more Digital Signatures Examples

Demonstrates how to create a CAdES BES invoice.xml.p7m using a certificate stored on a smart card or USB token.

Note: This example requires Chilkat v9.5.0.77 and at the time of this writing is restricted to the Windows operating system.

Chilkat2-Python

import sys
import chilkat2

success = False

# Note: Requires Chilkat v9.5.0.77 or greater.

# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

crypt = chilkat2.Crypt2()

# Use a certificate on a smartcard or USB token.
cert = chilkat2.Cert()
# Load the certificate on the smartcard currently in the reader (or on the USB token).
# Pass an empty string to allow Chilkat to automatically choose the CSP (Cryptographi Service Provider).
# See Load Certificate on Smartcard for information about explicitly selecting a particular CSP.
success = cert.LoadFromSmartcard("")
if (success != True):
    print(cert.LastErrorText)
    sys.exit()

# Provide the smartcard PIN.
# If the PIN is not explicitly provided here, the Windows OS should
# display a dialog for the PIN.
cert.SmartCardPin = "000000"

# Provide the certificate for signing.
success = crypt.SetSigningCert(cert)
if (success != True):
    print(crypt.LastErrorText)
    sys.exit()

# Indicate that SHA-256 should be used.
crypt.HashAlgorithm = "sha256"

# Specify the signed attributes to be included.
# (This is what makes it CAdES-BES compliant.)
jsonSignedAttrs = chilkat2.JsonObject()
jsonSignedAttrs.UpdateInt("contentType",1)
jsonSignedAttrs.UpdateInt("signingTime",1)
jsonSignedAttrs.UpdateInt("messageDigest",1)
jsonSignedAttrs.UpdateInt("signingCertificateV2",1)
crypt.SigningAttributes = jsonSignedAttrs.Emit()

inFile = "qa_data/xml/IT01234567890_11002.xml"
sigFile = "qa_output/IT01234567890_11002.xml.p7m"

# Create the CAdES-BES signature, which contains the original data.
success = crypt.CreateP7M(inFile,sigFile)
if (success == False):
    print(crypt.LastErrorText)
    sys.exit()

print("Success.")