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Title: [RFC] Detecting Malled Transactions Post by: phelix on February 13, 2014, 08:28:04 PM from https://gist.github.com/sipa/8907691
Quote 1. Inherent ECDSA signature malleability 2. Non-DER encoded ECDSA signatures 3.-8. [Txin script altering stuff] Non-malled: 1.) Rule: lower half S is better (does the standard client or any other client produce differing signatures?) 2.) Rule: only DER, handled as of 0.8+ 3.-8.) Rule: shorter tx_in script is better edit: How to find malled tx in the first place? Use NTXID: https://github.com/bitcoin/bitcoin/pull/3656 |