private static void CreateSignature(SigningCertificates signingCertificates, PdfSignatureAppearance signatureAppearance, ICollection<ICrlClient> clrClients, IOcspClient oscpClient) { IExternalSignature externalSignature = new X509Certificate2Signature(signingCertificates.X509Certificate2, "SHA-1"); MakeSignature.SignDetached(signatureAppearance, externalSignature, signingCertificates.FinalChain, clrClients, oscpClient, null, 0, CryptoStandard.CMS); }