Security • Estimated 35m

Rogue-Key Attack

security.rogue-key-attack

A rogue-key attack exploits naive public-key aggregation by choosing a related key that cancels another participant's key, making an aggregate signature appear authorized without the intended cooperation. Key aggregation protocols need binding or proof-of-possession defenses.

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Curated resources (3)

• Bitcoin Dev Project: Schnorr rogue-key attack explained (article) Learner-facing explanation of the key-aggregation attack.
• Bitcoin Optech Topic: MuSig (article) Technical context for key aggregation and rogue-key defenses in multisignature constructions.
• Mastering Bitcoin (book) Reference background for Schnorr signatures and multisignature coordination.

Direct prerequisites (1)

• MuSig

Direct dependents (0)

• None

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