Tags: sidh crypto
Rating:
tldr:
Server does the SIDH key-exchange, but reuses its key. We are also given an oracle on the correctness of the agreement.
Known adaptive attack described in https://eprint.iacr.org/2016/859
Account for Bob (server) having a 3^n-isogeny (Remark 2 in the paper).
full writeup: https://sectt.github.io/writeups/Plaid20/crypto_sidhe/README