rich1.0Jonas Nick [ARCHIVE] (npub1at…y3z5a)https://yabu.me/npub1at3pav59gkeqz9kegzqhk2v4j4r435x42ytf23pxs8crt74tuc8s2y3z5anjumphttps://yabu.me📅 Original date posted:2023-07-26 🗒️ Summary of this message: Attacks on nonces and challenges cannot be prevented by proving knowledge of the signing key (proof of possession, PoP). 📝 Original message: None of the attacks mentioned in this thread so far (ZmnSCPxj mentioned an attack on the nonces, I mentioned an attack on the challenge c) can be prevented by proving knowledge of the signing key (usually known as proof of possession, PoP).