crypto

type Recoverer interface {
	// RecoverHash recovers the address from a hash and signature.
	RecoverHash(hash types.Hash, sig types.Signature) (*types.Address, error)

	// RecoverMessage recovers the address from a message and signature.
	RecoverMessage(data []byte, sig types.Signature) (*types.Address, error)

	// RecoverTransaction recovers the address from a transaction.
	RecoverTransaction(tx *types.Transaction) (*types.Address, error)
}

type Signer interface {
	// SignHash signs a hash.
	SignHash(hash types.Hash) (*types.Signature, error)

	// SignMessage signs a message.
	SignMessage(data []byte) (*types.Signature, error)

	// SignTransaction signs a transaction.
	SignTransaction(tx *types.Transaction) error
}