Daniel J. Bernstein Karthikeyan Bhargavan Shivam Bhasin Anupam Chattopadhyay Tee Kiah Chia Matthias J. Kannwischer Franziskus Kiefer Thales B. Paiva Prasanna Ravi Goutam Tamvada KyberSlash: Exploiting secret-dependent division timings in Kyber implementations. 209-234 2025 2025 IACR Trans. Cryptogr. Hardw. Embed. Syst. 2 https://doi.org/10.46586/tches.v2025.i2.209-234 db/journals/tches/tches2025.html#BernsteinBBCCKKPRT25 streams/journals/tches