Folks, I cross-tested with Pharo and here are the good versions:
Cryptography - squeak: Cryptography-rww.49.mcz - pharo: Cryptography-Pharo-rww.38.mcz
SecureSession: - squeak & pharo: SecureSession-RobertWithers.20.mcz
I hope this helps, Robert
cryptography@lists.squeakfoundation.org