import { Pubkey } from "./pubkey.js";
import { KeypairData } from "./types.js";
import { TokenPayload } from "./jwt/types.js";
export declare class Keypair extends Pubkey {
    readonly privateKey: CryptoKey;
    constructor(thumbprint: string, publicKey: CryptoKey, privateKey: CryptoKey);
    static generate(): Promise<Keypair>;
    static fromData(data: KeypairData): Promise<Keypair>;
    toData(): Promise<KeypairData>;
    toPubkey(): Pubkey;
    sign<P extends TokenPayload>(payload: P): Promise<string>;
}