import { _PdfPublicKeyCryptographyCertificate } from './pdf-cryptography-certificate';
import { _PdfX509Certificate } from './x509/x509-certificate';
import { _PdfX509Name } from './x509/x509-name';
/**
 * High-level certificate wrapper providing convenient accessors and loaders.
 *
 * @private
 */
export declare class _PdfCertificate {
    /**
     * Certificate version number.
     *
     * @private
     * @type {number}
     */
    _version: number;
    /**
     * Certificate serial number bytes.
     *
     * @private
     * @type {Uint8Array}
     */
    _serialNumber: Uint8Array;
    /**
     * Issuer distinguished name string.
     *
     * @private
     * @type {string}
     */
    _issuerName: string;
    /**
     * Subject distinguished name string.
     *
     * @private
     * @type {string}
     */
    _subjectName: string;
    /**
     * Length in bytes of the signature (if known).
     *
     * @private
     * @type {number}
     */
    _signatureLength: number;
    /**
     * Certificate validity end date.
     *
     * @private
     * @type {Date}
     */
    _validTo: Date;
    /**
     * Certificate validity start date.
     *
     * @private
     * @type {Date}
     */
    _validFrom: Date;
    /**
     * Optional PKCS#12 / PKCS#7 wrapper when loaded from such formats.
     *
     * @private
     * @type {_PdfPublicKeyCryptographyCertificate}
     */
    _publicKeyCryptographyCertificate: _PdfPublicKeyCryptographyCertificate;
    /**
     * True when this instance was initialized from a PKCS container.
     *
     * @private
     * @type {boolean}
     */
    _isPublicKeyCryptographyCertificate: boolean;
    /**
     * Chain of parsed X.509 certificate objects.
     *
     * @private
     * @type {_PdfX509Certificate[]}
     */
    _chains: _PdfX509Certificate[];
    /**
     * Common OID -> attribute short-name mapping used when extracting names.
     *
     * @private
     * @type {Record<string,string>}
     */
    _objectIdentifierToAttributeMap: Record<string, string>;
    constructor(certificate: Uint8Array | _PdfX509Certificate, password?: string);
    /**
     * Initialize from PKCS#12/PKCS#7 container bytes using the provided password.
     *
     * @private
     * @param {Uint8Array} certificateBytes - PKCS container bytes.
     * @param {string} password - Password used to decrypt the container.
     * @returns {void}
     */
    _initializePublicKeyCryptographyCertificate(certificateBytes: Uint8Array, password: string): void;
    /**
     * Populate wrapper fields from a parsed `_PdfX509Certificate` instance.
     *
     * @private
     * @param {_PdfX509Certificate} certificate - Parsed X.509 certificate.
     * @returns {void}
     */
    _loadDetailsFromCertificate(certificate: _PdfX509Certificate): void;
    /**
     * Extract a single attribute value (e.g., CN) from an `_PdfX509Name` instance.
     *
     * @private
     * @param {_PdfX509Name} x509Name - Parsed distinguished name.
     * @param {string} attribute - Attribute short name or OID to look up.
     * @returns {string} The attribute value or empty string when not present.
     */
    _getUniqueAttributes(x509Name: _PdfX509Name, attribute: string): string;
}