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Kudelski Security Research

Kudelski Security Research

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Tag: crypto currency

Ledger Donjon wins Kudelski Security Crypto Challenge: Behind the scene 1/3

December 4, 2018 Guest Author

Kudelski Security is happy to publish the solution found by the team Ledger Donjon to the first challenge of Kudelski Security’s 2018 crypto challenge! Ledger

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How to defeat Ed25519 and EdDSA using faults

October 4, 2017 Yolan Romailler

We’ve succesfully conducted a fault attack against EdDSA that allowed us to recover enough secret key material to produce fake signatures for any message in a way a verifier cannot detect.

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