Authenticator Extension APIs

The following can be found in package github.com/kwilteam/kwil-db/core/crypto/auth.

Authenticator

// Authenticator is an interface for verifying signatures and
// deriving a string identifier from the sender bytes. Custom
// asymmetric signature algorithms may be implemented by developers
// by implementing this interface.
type Authenticator interface {
    // Verify verifies whether a signature is valid for a given
    // message and sender. It is meant to be used with asymmetric
    // signature algorithms such as ECDSA, Ed25519 RSA, etc. If the
    // signature is invalid, the method should return an error. If
    // the signature is valid, the method should return nil.
    Verify(sender, msg, signature []byte) error

    // Identifier returns a string identifier for a given sender.
    // This string identifier is used to identify the sender when
    // interacting with the Kuneiform engine, and will be used as
    // the `@caller` variable in the engine.
    Identifier(sender []byte) (string, error)
}