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Toufic Batrice

France

Lead Cryptography Engineer at SpaceComputer 🛰️

Image of the Earth from low earth orbit, highlighting the focus on the KMS architecture blog of our Earth-based KMS service, before offering on-orbit KMS once we launch our satellite in 2027.

From KMS to SpaceKMS: Building a Verifiable Cryptographic Control Plane

From confidential computing on Earth to independent trust domains in space Modern computing systems depend on cryptographic keys to determine who may sign, decrypt, authenticate, release secrets, provision infrastructure, or authorize high-value actions. A Key Management Service (KMS) is the control plane that governs those keys: where they may

Image of some cosmic dice made of connected data lines and stars above Earth, with the milky way in the background.

Ctrng-lib

In our previous post, we outlined the randomness supply chain and how we can ensure randomness is correctly generated and delivered to the user. But once the user has that randomness, along with proof that it hasn't been tampered with, how does he use it? That’s the

Filip Rezabek (left) and Toufic Batrice (right) with space and satellites in the background orbiting above Earth. Ethereum Community Conference in Cannes, France.

Space Infrastructure for Safe Computation: Talk by Filip and Toufic at EthCC

Last week, CoFounder Filip Rezabek and Applied cryptographer Toufic Batrice from the SpaceComputer team attended the Ethereum Community Conference (EthCC) in Cannes, France. They gave a talk 'Stars to Bits: Space Infrastructure for Safe Computation' which focused on the opportunity, challenges, and applications of building in Low Earth

Cosmic dice from randomness in cryptographic systems, specifically SpaceComputer's cTRNG and randomness beacons, creating a new foundational service primitive.

Verifying True Randomness in Cryptographic Systems

Randomness is a foundational primitive in cryptographic protocols. It underpins security properties such as unpredictability, fairness, privacy, and resistance to adversarial manipulation. Key generation, nonces, salts, signatures, leader election, lotteries, and many consensus mechanisms all rely on randomness behaving as assumed. When randomness is weak, biased, predictable, or manipulable, entire