How can we store and retrieve a certificate containing private key in a windows store + C#

Question

In my Windows application I will get a certificate containing private key. The public key is with me. I want to securely store this certificate in Windows secure folder and could be able to access this whenever required. Please help me to do this. Any sample program.

Answer 1

I got a solution for how can we store certificate with private key.

byte[] byteKey = DecodePrivateKey(Convert.FromBase64String(cryptoCertificateKey));
RSAParameters rsaParam = DecodeRSAPrivateKeyToRSAParam(byteKey);
                    var cspParams = new CspParameters
                    {
                        ProviderType = 1,
                        Flags = CspProviderFlags.UseUserProtectedKey | CspProviderFlags.NoPrompt};
 using (X509Store store = new X509Store(StoreName.Root, StoreLocation.LocalMachine))
{
store.Open(OpenFlags.ReadWrite); 
using (RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(cspParams))
                    {
                        rsaProvider.ImportParameters(rsaParam);
                        rsaProvider.PersistKeyInCsp = true;
X509Certificate2 x509Certificate = new X509Certificate2(cryptoCertificate, "123",
                            X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.Exportable |
                            X509KeyStorageFlags.PersistKeySet);
store.Add(x509Certificate);
}}

But I didn't get a solution that how to secure the privatekey with password