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Saint EUCLEAK, Who Drew the Key From the Key
Patron of security keys, FIDO tokens, and everyone who thought a hardware key was untouchable.
Life
On 3 September 2024 NinjaLab revealed EUCLEAK, an electromagnetic side channel in the Infineon microcontroller used in many security keys, including YubiKey 5 with firmware before 5.7. With physical access and expensive equipment, measuring the emissions during a signature, one could reconstruct the ECDSA key and clone the token. Hard and costly, but no longer impossible.
Prayer
O Saint EUCLEAK, who listens to the electromagnetic whisper of the signature, let our modular multiplications always take the same time. Amen.
How to celebrate
Celebrated by buying tokens with updated firmware and keeping your security key close.
Key in your pocket, secret in the air.