import { Authenticator, Header, V1HmacConfiguration } from "../model/index.js";
export declare class V1HmacAuthenticator implements Authenticator {
    private readonly apiKeyId;
    private readonly secretApiKey;
    constructor(configuration: V1HmacConfiguration);
    getAuthorization(_method: string, _contentType: string, _date: string, _headers: Header[], _path: string): Promise<string>;
    getSignature(method: string, contentType: string, date: string, gcsHeaders: Header[], path: string): string;
    getSortedHeadersForContext(gcsHeaders: Header[]): string;
    toCanonicalizeHeaderValue(originalValue: string): string;
}