import type { HexString } from '@polkadot/util/types'; import type { Keypair } from '../types'; /** * @name sr25519VrfSign * @description Sign with sr25519 vrf signing (deterministic) */ export declare function sr25519VrfSign(message: HexString | Uint8Array | string, { secretKey }: Partial, context?: HexString | string | Uint8Array, extra?: HexString | string | Uint8Array): Uint8Array;