public void EncryptUsingPublicKey_DecryptUsingPrivateKey()
{
// Create Keys, export, only import public
_sut.CreateAsymmetricKey();
_sut.ExportPublicKey(PublicKeyFile);
_sut.ImportPublicKey(PublicKeyFile);
Assert.That(_sut.CryptoServiceProviderIsPublicOnly, Is.True);
// Encrypt
_sut.EncryptFile(OriginalFile, EncryptedFile);
// Decrypt should fail (no private key)
try
{
_sut.DecryptFile(EncryptedFile, DecryptedFile);
Assert.Fail();
}
catch (Exception exception)
{
Assert.That(exception.Message, Is.EqualTo("Key does not exist."));
}
// Get private key, decryption now works
_sut.GetPrivateKey();
Assert.That(_sut.CryptoServiceProviderIsPublicOnly, Is.False);
_sut.DecryptFile(EncryptedFile, DecryptedFile);
Assert.That(File.ReadAllText(DecryptedFile), Is.EqualTo(Constants.PlainText));
}