ThresholdFHE Generation of EvalSumKeys using the OpenFHE Python Wrapper

OpenFHE ports/wrappers
1

Good day.

I would just like to ask about the generation of EvalSumKeys using the OpenFHE Python wrapper.The EvalSumKeyMap is no longer a compatible function argument of SerializeToFile, but I need the EvalSum function in my computation. I would just like to ask if there is an alternative to be able to generate the EvalSumKey for multiple parties?

Thank you for your time.

2

EvalSumKeyMap is now internally merged to EvalAutomorphismKeyMap (in OpenFHE itself), but the old API should still work; the users should not see any difference (as EvalSumKeyMap simply redirects now to EvalAutomorphismKeyMap) unless there is a bug. Could you provide a minimal working example for the issue you are seeing so I could try to run it and suggest a fix?

3

Hello, thank you for the response. I am still new to homomorphic encryption, and I wasn’t aware that the EvalSumKeyMap is under the EvalAutomorphismKeyMap. Using SerializeEvalAutomorphismKey worked. Thank you.