2 I have class library project in .net standard 2.0.3 where I’m using System.Security.Cryptography.Xml to sign a xml document with a privateRSAkey. var sign = GetXmlSign(doc, rsa); private static XmlElement GetXmlSign(XmlDocument xml, AsymmetricAlgorithm key) { var signedXml = new SignedXml(xml) {SigningKey ...