/// <reference types="node" />
import rs from 'jsrsasign';
declare class CertificateUtils {
    private constructor();
    static der2pem(der: Buffer): string;
    static mdsAttestationRootCertificate2pem(attestationRootCertificate: string): string;
    static isValidCertificate(x509: rs.X509): boolean;
    static isRootCertificate(x509: rs.X509): boolean;
    static verifySignature(authData: Buffer, clientDataJSONHash: Buffer, alg: COSEAlgorithmIdentifier, pem: string, sig: Buffer): boolean;
    static verifyCertificateChain(certificatePEMs: string[], rootCertificatePEM?: string): Promise<boolean>;
}
export default CertificateUtils;