export interface SignatureBlob {
    readonly bytes: Uint8Array;
    readonly encoding: 'der' | 'raw';
    readonly algorithm: 'secp256k1' | 'ed25519';
}
export interface PublicKeyBlob {
    readonly bytes: Uint8Array;
    readonly algorithm: 'secp256k1' | 'ed25519';
}
export interface SigningProvider {
    signDigest(digest: Uint8Array): Promise<SignatureBlob>;
    getPublicKey(): Promise<PublicKeyBlob>;
    healthCheck(): Promise<void>;
}