Non-malleability is a cryptographic property ensuring that a transaction’s unique identifier or its constituent data cannot be altered by an unauthorized third party without rendering the transaction invalid. This characteristic maintains the integrity and authenticity of transaction records. It prevents manipulation of transaction hashes.
Context
This attribute is a critical security feature in blockchain systems, preventing malicious actors from modifying transaction details after broadcast. Early versions of Bitcoin experienced transaction malleability issues, which subsequent protocol upgrades successfully addressed to significantly enhance overall transaction security and reliability.
This research introduces an optimized Groth16 zk-SNARK variant, achieving simulation extractability with fewer pairings, bolstering non-malleability for robust blockchain protocols.
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