/**
 * Represents the PEM encoded certificate, public key, and private key.
 */
export interface CertificatePem {
    cert: string;
    publicKey: string;
    privateKey: string;
}
/**
 * Represents the information extracted from a certificate.
 */
export interface CertificateInfo {
    hSerial: string;
    sIssuer: string;
    sSubject: string;
    sNotBefore: string;
    sNotAfter: string;
    issuedOn: Date;
    expiresOn: Date;
}
/**
 * Options for specifying the validity range of a certificate.
 */
export interface ValidityRangeOptions {
    validFrom?: Date;
    validTo?: Date;
}
/**
 * Manages the creation and parsing of certificates.
 */
export declare class CertificateManager {
    /**
     * Parses a PEM encoded certificate and extracts its information.
     * @param certPEM - The PEM encoded certificate string.
     * @returns An object containing the certificate information.
     * @example
     * const certificateManager = new CertificateManager();
     * const pem = certificateManager.generatePEM('exampleAddress');
     * const certInfo = certificateManager.parsePem(pem.cert);
     * console.log(certInfo);
     */
    parsePem(certPEM: string): CertificateInfo;
    /**
     * Generates a PEM encoded certificate, public key, and private key.
     * @param address - The address to be used as the certificate's subject and issuer.
     * @param options - Optional validity range for the certificate.
     * @returns An object containing the PEM encoded certificate, public key, and private key.
     * @example
     * const certificateManager = new CertificateManager();
     * const pem = certificateManager.generatePEM('exampleAddress');
     * console.log('Certificate:', pem.cert);
     * console.log('Public Key:', pem.publicKey);
     * console.log('Private Key:', pem.privateKey);
     */
    generatePEM(address: string, options?: ValidityRangeOptions): CertificatePem;
    /**
     * Creates a validity range for a certificate.
     * @param options - Optional validity range options.
     * @returns An object containing the notBefore and notAfter date strings.
     */
    private createValidityRange;
    /**
     * Converts a Date object to a string in the format YYMMDDHHMMSSZ.
     * @param date - The date to convert.
     * @returns The formatted date string.
     * @example
     * const certificateManager = new CertificateManager();
     * const dateStr = certificateManager.dateToStr(new Date('2024-05-07T12:23:50.000Z'));
     * console.log(dateStr); // "240507122350Z"
     */
    private dateToStr;
    /**
     * Converts a string in the format YYMMDDHHMMSSZ to a Date object.
     * @param str - The string to convert.
     * @returns The corresponding Date object.
     * @example
     * const certificateManager = new CertificateManager();
     * const date = certificateManager.strToDate("240507122350Z");
     * console.log(date.toISOString()); // "2024-05-07T12:23:50.000Z"
     */
    private strToDate;
}