https://th3b0ywh0l1v3d.github.io/tags/rsa-crt/ Recent content in Rsa-Crt on Th3B0yWh0L1v3d — Security Writeups Hugo en-us Sun, 07 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/dalctf-2026/crypto/fun-with-rsa/ Sun, 07 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/dalctf-2026/crypto/fun-with-rsa/ A homemade RSA-CRT signer leaks a correct and a faulted signature of the same message; gcd(s − spz, n) factors n (the Bellcore attack), while the trivial shortcut just recovers the message via s^e mod n — and the XOR ‘protection’ undoes itself.