export declare enum AuthType {
    API_KEY = "API_KEY",
    AES = "AES",
    RSA = "RSA"
}
interface SignParams {
    url: string;
    method: string;
    body?: string;
    content_type?: string;
    date: string;
    headers: {
        [key: string]: any;
    };
    query?: any;
    private_key?: string;
    auth_type: string;
}
export declare class Authentication {
    static sign(params: SignParams): string;
    private static signAES;
    private static signRSA;
    static signMessage(method: string, date: string, canonicalized_headers: string, canonicalized_resource: string, body?: string, content_type?: string): string;
    private static canonicalizedHeaders;
    private static canonicalizedResource;
}
export {};