ethsign
Ethsign refers to the process and tools used to produce an Ethereum digital signature, typically applied to a message or a transaction to prove ownership of an address and authorize actions on the network. In practice, ethsign is performed by a wallet or client with access to an account’s private key; the resulting signature allows anyone to verify that the holder of the private key approved the message without exposing it.
Mechanism: Ethereum uses the ECDSA over secp256k1. A message or transaction is hashed with Keccak-256. For personal
Standards and methods: The Ethereum JSON-RPC interface includes eth_sign and personal_sign, which request a signature from
Applications: Ethsign is used by wallets to authorize transactions, by decentralized applications for authentication and contract
Security: Users should be cautious when signing unknown data, as signatures can authorize unintended actions. Signing
See also: Ethereum, ECDSA, Keccak-256, eth_sign, personal_sign, EIP-191, EIP-712.