2min chapter

Security Cryptography Whatever cover image

Threema with Kenny Paterson, Matteo Scarlata and Kien Tuong Truong

Security Cryptography Whatever

CHAPTER

Co-Fighter Attacks in NACO

Attackers have to claim the server's public key as your own for this attack to work. But how can you do that without knowing the private key? Well, we found an API that allows you to register public keys without proving that you need a private key. And also it turns out you don't have to register exactly theserver's public key. You can add a point of law order to the server'spublic key. Oh my God. Because we're on curve 2559. This is why we need play-watter groups all over again.

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