Public Function New( _
   ByVal certificate As X509Certificate2 _
)

public RSAPrivateKey( 
   X509Certificate2 certificate
)

byte[] rawdata = new byte[8001];
new Random().NextBytes(rawdata);

byte[] cypher;
using (RSAPublicKey publicKey = new RSAPublicKey(TestCertPublicKey()))
    cypher = publicKey.Encrypt(rawdata);

using (RSAPrivateKey privateKey = new RSAPrivateKey(TestCertPrivateKey()))
    Assert.AreEqual(rawdata, privateKey.Decrypt(cypher));

Dim rawdata As Byte() = New Byte(8001) {}
New Random().NextBytes(rawdata)

Dim cypher As Byte()
Using publicKey As New RSAPublicKey(TestCertPublicKey())
    cypher = publicKey.Encrypt(rawdata)
End Using

Using privateKey As New RSAPrivateKey(TestCertPrivateKey())
    Assert.AreEqual(rawdata, privateKey.Decrypt(cypher))
End Using