import { _PdfCipherParameter } from './x509/x509-cipher-handler';
/**
 * Helper representing a certificate identifier (subject key identifier) wrapper.
 *
 * @private
 */
export declare class _PdfCertificateIdentifier {
    /**
     * Raw identifier bytes (subject key identifier).
     *
     * @private
     * @type {Uint8Array}
     */
    _identifier: Uint8Array;
    constructor(params: {
        pubicKey?: _PdfCipherParameter;
        id?: Uint8Array;
    });
    equals(other: any): boolean;
    /**
     * Compute a simple hash code for the identifier bytes.
     *
     * @private
     * @returns {number} 32-bit integer hash of the identifier.
     */
    _getHashCode(): number;
}