Trait Signer 

pub trait Signer: Send + Sync {
    // Required method
    fn sign_hash(
        &self,
        address: &str,
        hash: &[u8; 32],
    ) -> Result<[u8; 65], ExchangeError>;
}

Trait for signing message hashes.

This abstracts over different key management backends (keyring, HD wallet, etc.) so that the exchange crate does not depend on any specific implementation.

Required Methods

fn sign_hash( &self, address: &str, hash: &[u8; 32], ) -> Result<[u8; 65], ExchangeError>

Sign an arbitrary message hash (32 bytes) with the key for the given address.

Returns a 65-byte signature: r (32 bytes) + s (32 bytes) + v (1 byte, recovery id 0 or 1).

Implementors