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Hybrid key-exchange with PQ-KEM algorithms

I am working on a security-critical tool that uses ECDH to establish shared session keys. I want to reinforce this process by using a PQ-KEM algorithm like Kyber. Right now, I am thinking of achieving this by having two independent key exchanges (one with ECDH keys and one using the …

Probability of randomly generating an EC public key

From what I understand the size of a secp256k1 EC public key is 65 bytes (out of which one is a prefix byte so lets ignore that). The private key is any 256-bit number in [0, N] where N is the order of the curve. So if I have a …

Fully Homomorphic Encryption Survey

Hi, please fill out Lattica's FHE survey [https://forms.gle/UA4LrVKhkWgENeGS9](https://forms.gle/UA4LrVKhkWgENeGS9). This survey gathers insights from industry experts about the current state and future development of Fully Homomorphic Encryption. Survey results will be widely available here and on social media. Thanks - your insights are super valuable! https://preview.redd.it/i7dprkewabfe1.jpg?width=3158&format=pjpg&auto=webp&s=1c0a7213b21a4f7d84a7adfcfe9034dbd9635fe5

(ePrint) How to Prove False Statements: Practical Attacks on Fiat-Shamir

Let's Encrypt - Scaling Our Rate Limits to Prepare for a Billion Active Certificates

The Slow Death of OCSP

Optimal Secure Curves For ECC as of 2025?

What are the optimal secure curves for ECC? I have been using Curve25519 because of https://safecurves.cr.yp.to/ and also want to implement Curve448. BLS12_381 is another interesting one, especially for zkps.

Hell Is Overconfident Developers Writing Encryption Code

WOTS-INVERSE-STATELESS-SIGNATURE (32 byte secret key, 16x Public Keys, Post-Quantum): A Work In Progress

Why Do Some SSL/TLS Libraries Lack Support for Crypto Modules/Tokens?

I was reviewing cURL's sheet comparing TLS libraries (https://curl.se/docs/ssl-compared.html). I was surprised when I found only two supporting crypto modules/tokens following the PKCS #11 standard. Why are there so few TLS libraries supporting crypto modules/tokens operating under the PKCS #11 standard?