/tags/hnp/Recent content in HNP onHugo -- gohugo.ioMon, 14 Jul 2025 19:47:16 +0100/post/l3ak-oracle/Mon, 14 Jul 2025 19:47:16 +0100/post/l3ak-oracle/This challenge was a standard Hidden Number Problem dressed up in fantasy cosplay. The objective was clear: uncover a hidden value $\alpha$ using Babai's CVP algorithm Challenge Overview The challenge spins up a remote service that hands out: p: A 256-bit prime modulus. n: The bit length of p, which is 256. k: The number of bits to be leaked, calculated as int(n**0.5) + n.bit_length() + 1, which comes out to 26.