{"type":"rich","version":"1.0","title":"Jonas Nick [ARCHIVE] wrote","author_name":"Jonas Nick [ARCHIVE] (npub1at…y3z5a)","author_url":"https://yabu.me/npub1at3pav59gkeqz9kegzqhk2v4j4r435x42ytf23pxs8crt74tuc8s2y3z5a","provider_name":"njump","provider_url":"https://yabu.me","html":"📅 Original date posted:2023-07-26\n🗒️ Summary of this message: Attacks on nonces and challenges cannot be prevented by proving knowledge of the signing key (proof of possession, PoP).\n📝 Original message:\nNone of the attacks mentioned in this thread so far (ZmnSCPxj mentioned an\nattack on the nonces, I mentioned an attack on the challenge c) can be prevented\nby proving knowledge of the signing key (usually known as proof of possession,\nPoP)."}