MCSI: A Masked Commutative Supersingular Isogeny Key Exchange with Blinded Ephemeral Keys

We introduce MCSI, a two message key exchange we design over the CSIDH class group action, in which each party sends its ephemeral public element under an authenticated encryption keyed by the value the two static keys determine. The design gives implicit mutual authentication, hides the ephemera...

SIAM Conference on Applied Algebraic Geometry 2019 - Isogenies mini-symposium

So here we are in the nice city of Bern, in the Teutonic Switzerland, for SIAM Conference on Applied Algebraic Geometry 2019 that this year counts more than 750 attendees! The weather is warm enough but the isogenies topic has never been so hot! So for this occurrence of the conference Tanja Lang...