import { Base64String, HexString, Nillable, NonNil, Promisy } from '../utils/types';
import { BytesEncodingStatus, PayloadBytesTypes } from './enums';
export interface Signature<T extends PayloadBytesTypes> {
    sig: Nillable<T extends BytesEncodingStatus.BASE64_ENCODED ? Base64String : Uint8Array>;
    type: CustomSignatureType;
}
export declare enum SignatureType {
    SIGNATURE_TYPE_INVALID = "invalid",
    SECP256K1_PERSONAL = "secp256k1_ep",
    ED25519 = "ed25519"
}
export type EthSigner = {
    signMessage: (message: string | Uint8Array) => Promise<string>;
};
export type CustomSigner = NonNil<(message: Uint8Array) => Promise<Uint8Array>>;
export type SignerSupplier = Promisy<EthSigner | CustomSigner>;
export interface AuthBody {
    signature: Base64String;
    challenge: HexString;
}
export type CustomSignatureType = string;
export type AnySignatureType = SignatureType | CustomSignatureType;
export declare function getSignatureType(signer: SignerSupplier): SignatureType;
export declare function isEthersSigner(signer: SignerSupplier): boolean;
export declare function executeSign(msg: Uint8Array, signer: SignerSupplier, signatureType: AnySignatureType): Promise<Uint8Array>;