import { Address, Hex } from 'viem';
import { State, StateHash, Signature, ChannelId } from '../client/types';
export declare function getStateHash(channelId: ChannelId, state: State): StateHash;
type SignMessageFn = (args: {
    message: {
        raw: Hex;
    };
}) => Promise<Hex>;
export declare function signState(stateHash: StateHash, signMessage: SignMessageFn): Promise<{
    r: Hex;
    s: Hex;
    v: number;
}>;
export declare function removeQuotesFromRS(input: Signature): Signature;
export declare function verifySignature(stateHash: StateHash, signature: Signature, expectedSigner: Address): Promise<boolean>;
export {};