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TNO-MPC / protocols.distributed_keygen

TNO PET Lab - secure Multi-Party Computation (MPC) - Protocols - Distributed Keygen
https://docs.pet.tno.nl/mpc/protocols/distributed_keygen
Apache License 2.0
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ElGamal version #3

Closed stanbar closed 1 year ago

stanbar commented 1 year ago

Hello, I'm looking for a distributed key generation for elGamal. I found your repo, but as far as I know it supports only Paillier. Could you please give me some suggestions on the modifications I have to do in order to make your codebase work with elGamal?

ThomasTNO commented 1 year ago

Hi @stanbar, thanks for reaching out. We are currently working on an implementation of ElGamal (without distributed keys). This would be more along the lines of https://github.com/TNO-MPC/encryption_schemes.paillier. For distributed ElGamal A Threshold Cryptosystem without a Trusted Party (https://link.springer.com/chapter/10.1007/3-540-46416-6_47) might provide a mathematical basis.

In terms of modifcations, you probably need to modify most (decryption, encryption, key generation).