Enhancement of digital signature algorithm in bitcoin wallet

Bitcoin is a peer-to-peer electronic cash system largely used for online financial transactions. It gained popularity due to its anonymity, privacy, and comparatively low transaction cost. Its wallet heavily relies on Elliptic Curve Digital Signature Algorithm (ECDSA). Weaknesses in such algorithms can significantly affect the safety security of bitcoin wallets. In this paper, secure key management was designed based several changes parts. cold wallet, we employed an image-based passphrase achieve strong entropy source master seed. The hot proposed key_ Gen algorithm modifying generation step ECDSA that it generate fresh pair at each transaction. final part ensures recovering all keys both wallets without daily backups case losing wallet. findings prove resisting against dictionary attack overcoming memorizing problem. model acquires good anonymity privacy users by eliminating likability additional execution time signing is~70 millisecond, which then important domain.