An algorithm submitted to the NIST post-quantum encryption competition – and one that made it to the fourth round – has been defeated. The algorithm, Supersingular Isogeny Key Encapsulation (SIKE), was broken by Wouter Castryck and Thomas Decru at KU Leuven, and the process described in a paper written at the end of July 2022.
Cryptographers are not surprised by such an event; but security leaders concerned about their ability to protect secrets after the arrival of quantum computers, need to consider the implications.
For cryptographers
The defeat of SIKE follows a key recovery attack on the Supersingular Isogeny Diffie-Hellman key exchange protocol and its instantiation as SIKE in the NIST competition. The attack is based on the ‘glue and split’ theorem developed in 1997 by…
Source link
