已添加公钥后，如何向 X509Certificate2 添加私钥？

Question

My steps are:

1. Create X509Certificate2 with public key:

    X509Certificate2 clientCertificate = new X509Certificate2("public key certificate blob as byte[]");

2. How do I want to load the private key blob to clientCertificate ?

Answer 1

It looks like you can not import RSA private key with just .net framework tools.

Check out this thread How to read a PEM RSA private key from .NET .

Answer 2

Just in case anyone like me and up looking at this old post when searching for how to generate X509Certificate2 from pem fil/private key:

The .Net 5.0 framework has a very simplified approach to this:

var certPem = File.ReadAllText("cert.pem");
var eccPem = File.ReadAllText("ecc.pem");
var cert = X509Certificate2.CreateFromPem(certPem, eccPem);

(source: https://www.scottbrady91.com/C-Sharp/PEM-Loading-in-dotnet-core-and-dotnet )

Answer 3

Also see: How to import PKCS#8 RSA privateKey (created by OpenSSL) in C#

It includes a link to Mono's source code which can read PKCS#8 / PEM files and return an RSA instance from it.