CkPython Requires Chilkat v11.0.0+

Workaround for the deprecated Crypt2.OpaqueSignBytesENC method

Shows how to replace the deprecated OpaqueSignBytesENC method. (Chilkat is moving away from the use of CkByteData.) CkPython

import chilkat

success = False

crypt = chilkat.CkCrypt2()

cert = chilkat.CkCert()
#  ...
#  Load the cert from a source such as a .pfx/.p12 file, smart card, USB token, Apple keychain, Windows certificate store, etc.
#  
success = crypt.SetSigningCert(cert)

path = "c:/someDir/example.dat"

#  ------------------------------------------------------------------------
#  The OpaqueSignBytesENC method is deprecated:

inData = chilkat.CkByteData()
inData.loadFile(path)

crypt.put_EncodingMode("base64")
base64_sig = crypt.opaqueSignBytesENC(inData)

#  ------------------------------------------------------------------------
#  Workaround.
#  (Chilkat is moving away from using CkByteData)

bd = chilkat.CkBinData()
bd.LoadFile(path)

#  The contents of bd are replaced with the opaque signature.
success = crypt.OpaqueSignBd(bd)

base64_sig = bd.getEncoded("base64")