/**
 * JwtVerifier — Pure Node.js JWT verifier (no external dependencies).
 *
 * Supports RS256 (RSA + SHA-256) for offline license verification.
 * Uses Node.js built-in `crypto` module — zero external dependencies.
 *
 * JWT Format: header.payload.signature (Base64URL-encoded parts)
 */
import type { LicenseJwtPayload } from '../types/index.js';
export declare class JwtVerifier {
    /**
     * Verify a JWT token using an RSA public key (RS256).
     *
     * @param token      The full JWT string (header.payload.signature)
     * @param publicKey  PEM-encoded RSA public key
     * @returns          Decoded and verified payload
     * @throws           LicenseError on invalid/expired/malformed token
     */
    static verify(token: string, publicKey: string): LicenseJwtPayload;
    private static base64UrlToBuffer;
    private static decodeBase64Json;
}
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