public void Pem()
{
if (Environment.OSVersion.Platform == PlatformID.Unix)
return; // No DLLs on Unix
// TODO: Conditional compilation for mono compability
string publicKeyPem = Encoding.ASCII.GetString(Resources.GetResource("RSACryptoServiceProviderExtensionPublicKey.pem"));
string privateKeyPem = Encoding.ASCII.GetString(Resources.GetResource("RSACryptoServiceProviderExtensionPrivateKey.pem"));
Console.WriteLine("Public key:\n{0}", publicKeyPem);
Console.WriteLine("Private key:\n{0}", privateKeyPem);
byte[] signature;
using (var rsa = new RSACryptoServiceProvider())
{
rsa.PersistKeyInCsp = false;
rsa.ImportPrivateKeyPem(privateKeyPem);
using (var sha1 = new SHA1CryptoServiceProvider())
signature = rsa.SignData(DataToSign, sha1);
}
using (var rsa = new RSACryptoServiceProvider())
{
rsa.PersistKeyInCsp = false;
rsa.ImportPublicKeyPem(publicKeyPem);
bool isValid;
using (var sha1 = new SHA1CryptoServiceProvider())
isValid = rsa.VerifyData(DataToSign, sha1, signature);
Assert.IsTrue(isValid);
// invalidate signature so the next check must fail
signature[signature.Length - 1] ^= 0xFF;
using (var sha1 = new SHA1CryptoServiceProvider())
isValid = rsa.VerifyData(DataToSign, sha1, signature);
Assert.IsFalse(isValid);
}
}
