import { _PdfAbstractSyntaxElement } from '../asn1/abstract-syntax';
import { _PdfAlgorithms } from './x509-algorithm';
import { _PdfUniqueBitString } from './x509-bit-string-handler';
import { _PdfPublicKeyInformation } from './x509-certificate-key';
import { _PdfX509Extensions } from './x509-extensions';
import { _PdfX509Name } from './x509-name';
import { _PdfX509Time } from './x509-time';
/**
 * Parsed representation of an X.509 signed certificate (tbsCertificate + signature metadata).
 *
 * @private
 */
export declare class _PdfSignedCertificate {
    /**
     * Raw ASN.1 sequence elements composing the certificate.
     *
     * @private
     * @type {_PdfAbstractSyntaxElement[]}
     */
    _sequence: _PdfAbstractSyntaxElement[];
    /**
     * Numeric certificate version (0-based internally, exposed via _getVersion).
     *
     * @private
     * @type {number}
     */
    _version: number;
    /**
     * Certificate serial number as raw bytes.
     *
     * @private
     * @type {Uint8Array}
     */
    _serialNumber: Uint8Array;
    /**
     * Signature algorithm identifier for this certificate.
     *
     * @private
     * @type {_PdfAlgorithms}
     */
    _signature: _PdfAlgorithms;
    /**
     * Issuer distinguished name.
     *
     * @private
     * @type {_PdfX509Name}
     */
    _issuer: _PdfX509Name;
    /**
     * Validity start time.
     *
     * @private
     * @type {_PdfX509Time}
     */
    _startDate: _PdfX509Time;
    /**
     * Validity end time.
     *
     * @private
     * @type {_PdfX509Time}
     */
    _endDate: _PdfX509Time;
    /**
     * Subject distinguished name.
     *
     * @private
     * @type {_PdfX509Name}
     */
    _subject: _PdfX509Name;
    /**
     * Subject public key information.
     *
     * @private
     * @type {_PdfPublicKeyInformation}
     */
    _publicKeyInformation: _PdfPublicKeyInformation;
    /**
     * Optional issuer unique ID bit string.
     *
     * @private
     * @type {_PdfUniqueBitString|undefined}
     */
    _issuerID?: _PdfUniqueBitString;
    /**
     * Optional subject unique ID bit string.
     *
     * @private
     * @type {_PdfUniqueBitString|undefined}
     */
    _subjectID?: _PdfUniqueBitString;
    /**
     * Optional certificate extensions container.
     *
     * @private
     * @type {_PdfX509Extensions|undefined}
     */
    _extensions?: _PdfX509Extensions;
    constructor(sequenceElement: _PdfAbstractSyntaxElement);
    /**
     * Get the human-readable certificate version (1,2,3...).
     *
     * @private
     * @returns {number} The certificate version number.
     */
    _getVersion(): number;
    /**
     * Return the DER-encoded bytes that represent this entire certificate.
     *
     * @private
     * @returns {Uint8Array} DER-encoded certificate bytes.
     */
    _getDistinguishEncoded(): Uint8Array;
}