Broken RSA
I tried to send you an important message with RSA, however I messed up my RSA implementation really badly. Can you still recover the flag?
I tried to send you an important message with RSA, however I messed up my RSA implementation really badly. Can you still recover the flag?
As we've seen, lattices contain hard problems which can form trapdoor functions for cryptosystems. We also find that in cryptanalysis, lattices can break cryptographic protocols which seem at first to be unrelated to lattices.
I encrypted a secret message with RSA but I lost the modulus. Can you help me recover it?
I think this is safe... Right?
When you connect to a website over HTTPS, the first TLS message sent by the server is the ServerHello containing the server TLS certificate. Your browser verifies that the TLS certificate is valid, and if not, will terminate the TLS handshake. Verification includes ensuring that: