Extremely Simple Fail-Stop ECDSA Signatures

ePrint Report: Extremely Simple Fail-Stop ECDSA Signatures

Mario Yaksetig

Fail-stop signatures are digital signatures that allow a signer to prove that a specific forged signature is indeed a forgery. After such a proof is published, the system can be stopped.


We introduce a new simple ECDSA fail-stop signature scheme. Our proposal is based on the minimal assumption that an adversary with a quantum computer is not able to break the (second) preimage resistance of a cryptographically-secure hash function. Our scheme …

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