GCM on Rijndael-256, this time using the whole first block output to key GHASH and survive nonce reuse.

Two-round Even-Mansour is info-theoretically quantum-secure; single-permutation variants get wrecked by adaptive queries.

Is this homegrown nondeterministic cipher actually safe, or just frequency-attack cosplay?

Walsh-spectrum puncturing trims quantum linear key-recovery cost on Serpent, RECTANGLE-128, and PIPO-128, so Grover isn't safe.

LEANY proposes a 256-bit wide-block SPN cipher and FPGA-friendly implementation, because AES-256 apparently needed a roommate.

Formalizes Terrapin against SSH and then does the tedious part: sorting which AEAD modes still hold up and which don't.

A writeup on CVE-2025-39964, where AF_ALG's shared state and wait path became a root LPE. Kernel bugs remain a hobby.