Get Private Key from BouncyCastle X509 Certificate? C#

Question

Normally when I grab an X509Certificate2 out of my keystore I can call .PrivateKey to retrieve the cert\'s private key as an AsymmetricAlgorithm<

Answer 1

Find .NET X509Certificate2:

X509Certificate2 cert = this.FindCertificate(certificateFriendlyName);

Parse it to BouncyCastle certificate and use X509Certificate2Signature to get signature:

var parser = new X509CertificateParser();
var bouncyCertificate = parser.ReadCertificate(cert.RawData);
var algorithm = DigestAlgorithms.GetDigest(bouncyCertificate.SigAlgOid);
var signature = new X509Certificate2Signature(cert, algorithm);