export type DHKeyPair = {
    public: Uint8Array;
    secret: Uint8Array;
};
export interface DH {
    readonly NAME: string;
    readonly DHLEN: number;
    generateKeypair(): DHKeyPair;
    dh(kp: DHKeyPair, pk: Uint8Array): Uint8Array;
}
export declare const X25519: DH;