Module secp256k1 

ecrecover precompile.

Depending on enabled features, it will use different implementations of ecrecover.

• k256 - uses maintained pure rust lib k256, it is perfect use for no_std environments.
• secp256k1 - uses bitcoin_secp256k1 lib, it is a C implementation of secp256k1 used in bitcoin core. It is faster than k256 and enabled by default and in std environment.
• libsecp256k1 - is made from parity in pure rust, it is alternative for k256.

Order of preference is secp256k1 -> k256 -> libsecp256k1. Where if no features are enabled, it will use k256.

Input format: [32 bytes for message][64 bytes for signature][1 byte for recovery id]

Output format: [32 bytes for recovered address]

Modules

bitcoin_secp256k1

bitcoin_secp256k1 implementation of ecrecover. More about it in crate::secp256k1.

k256

k256 implementation of ecrecover. More about it in crate::secp256k1.

Constants

ECRECOVER

ecrecover precompile, containing address and function to run.

Functions

ec_recover_run

ecrecover precompile function. Read more about input and output format in this module docs.

ecrecover

Recover the public key from a signature and a message.