CkPython

Create Egypt ITIDA CAdES-BES .p7s Signature (File to File)

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements. CkPython

import sys
import chilkat

success = False

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

crypt = chilkat.CkCrypt2()

cert = chilkat.CkCert()

# There are many ways to load the certificate.  
# This example was created for a customer using an ePass2003 USB token.
# Assuming the USB token is the only source of a hardware-based private key..
success = cert.LoadFromSmartcard("")
if (success != True):
    print(cert.lastErrorText())
    sys.exit()

# Tell the crypt component to use this cert.
success = crypt.SetSigningCert(cert)
if (success != True):
    print(crypt.lastErrorText())
    sys.exit()

cmsOptions = chilkat.CkJsonObject()
cmsOptions.UpdateBool("DigestData",True)
cmsOptions.UpdateBool("OmitAlgorithmIdNull",True)
crypt.put_CmsOptions(cmsOptions.emit())

# The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
# To create a CAdES-BES signature, set this property equal to true. 
crypt.put_CadesEnabled(True)

crypt.put_HashAlgorithm("sha256")

jsonSigningAttrs = chilkat.CkJsonObject()
jsonSigningAttrs.UpdateInt("contentType",1)
jsonSigningAttrs.UpdateInt("signingTime",1)
jsonSigningAttrs.UpdateInt("messageDigest",1)
jsonSigningAttrs.UpdateInt("signingCertificateV2",1)
crypt.put_SigningAttributes(jsonSigningAttrs.emit())

# By default, all the certs in the chain of authentication are included in the signature.
# If desired, we can choose to only include the signing certificate:
crypt.put_IncludeCertChain(False)

# Make sure we sign the utf-8 byte representation of the JSON string
crypt.put_Charset("utf-8")

# Create the CAdES-BES signature, which does not contain the data being signed.
pathOfFileToSign = "someDir/someFile"
outputPath = "outDir/someFile.p7s"
success = crypt.CreateP7S(pathOfFileToSign,outputPath)
if (success != True):
    print(crypt.lastErrorText())
    sys.exit()

print("Success!")