export type AppleSRPProtocol = 's2k' | 's2k_fo';
export type AppleSRPInitRequest = {
    a: string;
    accountName: string;
    protocols: AppleSRPProtocol[];
};
export type AppleSRPInitResponse = {
    iteration: number;
    salt: string;
    protocol: AppleSRPProtocol;
    b: string;
    c: string;
};
export type AppleSRPCompleteProof = {
    accountName: string;
    m1: string;
    m2: string;
    c: string;
};
export declare class AppleGsaSrpClient {
    private readonly accountName;
    private srpClient?;
    constructor(accountName: string);
    init(): Promise<AppleSRPInitRequest>;
    complete(password: string, serverData: AppleSRPInitResponse): Promise<AppleSRPCompleteProof>;
}