Charles Guillemet
Charles Guillemet is the Chief Technology Officer of Ledger, the hardware wallet maker he joined in 2017 as Chief Security Officer before being promoted to CTO in 2019. He founded Ledger's security team and the Donjon, its internal security research lab known for publishing attack research on hardware wallets across the industry. Before Ledger he spent about a decade in cryptography and hardware security, designing secure integrated circuits at Tiempo and later working as a technical manager at a French ITSEF security evaluation lab within the CEA. He holds a master's degree in cryptography and security from ENSIMAG, where he also lectured.
17 talks by Charles Guillemet
- One Type of Post-Quantum Cryptography Is Most Popular. Why Is Crypto Trying Out Three?
- Why a Hidden Public Key Still Can't Protect Your Bitcoin From Quantum Computing
- Fireside Chat with Charles on Post-Quantum World
- Post Quantum Cryptography And The Future of Hardware
- Securing Cryptography and Hardware for the Quantum Era | Charles Guillemet - Ledger
- From Chaos to confidence: Simulate and clear sign your transactions
- Ledger Unveils NFC Recovery Key: A New Layer of Crypto Backup. How Safe Is It?
- DAPPCON 2025: Know What You Sign- Robust Tooling for Security and Verifying Signatures
- From Chaos to Confidence: Understanding and Predicting Transactions | Charles Guillemet - Ledger
- DeFi Can’t Move Forward Without Clear Signing: Let Me Change Your Mind | Devcon SEA
- Ledger Key Ring Protocol
- Clear Sign All The Things
- Onboarding Users to Ethereum Ecosystem via Account Abstraction and EVM-L2s | Will Warren , Charles
- Is Ledger Safe? with CTO, Charles Guillemet
- Ledger CTO on How NOT to Lose Your Crypto
- Les Amis d'Ethereum France #3, avec DeFi France — La Sécurité pour les devs de dApps
- The challenge of digital assets custody