Create x509 certificate with openssl/makecert tool
- by Zé Carlos
I'm creating a x509 certificate using makecert with the following parameters:
makecert -r -pe -n "CN=Client" -ss MyApp
I want to use this certificate to encrypt and decrypt data with RSA algoritm.
I look to generated certificate in windows certificate store and everything seems ok (It has a private key, public key is a RSA key with 1024 bits and so on..)
Now i use this C# code to encrypt data:
X509Store store = new X509Store("MyApp", StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadOnly);
X509Certificate2Collection certs = store.Certificates.Find(X509FindType.FindBySubjectName, "Client", false);
X509Certificate2 _x509 = certs[0];
using (RSACryptoServiceProvider rsa = (RSACryptoServiceProvider)_x509.PrivateKey)
{
byte[] dataToEncrypt = Encoding.UTF8.GetBytes("hello");
_encryptedData = rsa.Encrypt(dataToEncrypt, true);
}
When executing the Encrypt method, i receive a CryptographicException with message "Bad key".
I think the code is fine. Probably i'm not creating the certificate properly.
Any comments?
Thanks
---------------- EDIT --------------
If anyone know how to create the certificate using OpenSsl, its also a valid answer for me.
