Sep
30

PwnThyBytes CTF 2019 – Wrong Ring (Crypto)

Is post quantum cryptography too complex for you? wrong_ring.sage Summary: Ring-LWE with small error, hidden under a number field

Apr
24

PlaidCTF 2016 – sexec (Crypto 300)

If you need to securely grant execution privileges, what better way to do it than sexec? This is running on sexec.pwning.xxx:9999 sexec.tar.gz Summary: attacking a small instance of Ring-LWE based cryptosystem with Babai’s Nearest Vector algorithm.