import { IFintectureConfig } from '../interfaces/ConfigInterface';
export declare function generateUUID(): string;
export declare function generateUUIDv4(): string;
export declare function createSignatureHeader(headers: any, config: IFintectureConfig, signedHeaders: any): string;
export declare function buildSigningString(headers: any, signedHeaders: any): string;
export declare function buildHeaderString(headers: any, signedHeaders: any): string;
export declare function signPayload(payload: any, privateKey: string, algorithm?: string): string;
export declare function hashBase64(plainText: string): string;