export declare const create: (keyId: string, overwrite?: boolean) => Promise<void>;
export declare const get: (keyId: string, publik?: boolean) => Promise<string>;
export declare const add: (keyId: string, key: string, publik?: boolean) => Promise<void>;
export declare const sign: (keyId: string, message: Uint8Array) => Promise<Uint8Array>;
export declare const verify: (keyId: string, message: Uint8Array, signature: Uint8Array) => Promise<boolean>;