public static void Main(string[] args)
{
if (args.Length != 2)
{
Console.WriteLine("Usage: ECCTest.exe ecdsaca.der ecdsakey.cng");
return;
}
X509Certificate2 cert = new X509Certificate2(args[0]);
PublicKey publicKey = cert.PublicKey;
ECDsaCng ecdsaPublicKey = GetECDSAFromPublicKey(publicKey);
ecdsaPublicKey.HashAlgorithm = CngAlgorithm.Sha512;
byte[] cngBlob = File.ReadAllBytes(args[1]);
CngKey cngKey = CngKey.Import(cngBlob, CngKeyBlobFormat.GenericPrivateBlob, CngProvider.MicrosoftSoftwareKeyStorageProvider);
ECDsaCng ecdsaPrivateKey = new ECDsaCng(cngKey);
ecdsaPrivateKey.HashAlgorithm = CngAlgorithm.Sha512;
byte[] data = new byte[256];
for (int i = 0; i < data.Length; i++)
{
data[i] = (byte)i;
}
byte[] signature = ecdsaPrivateKey.SignData(data);
PrintBytes("signature", signature);
Console.WriteLine("Signature verified: " + ecdsaPublicKey.VerifyData(data, signature));
ECDiffieHellmanBc alice = new ECDiffieHellmanBc();
ECDiffieHellmanCng bob = new ECDiffieHellmanCng();
byte[] aliceKey = alice.DeriveKeyMaterial(bob.PublicKey);
byte[] bobKey = bob.DeriveKeyMaterial(alice.PublicKey);
PrintBytes("alice key", aliceKey);
PrintBytes("bob key", bobKey);
Console.WriteLine("Running CMAC test");
byte[] keyBytes = new byte[24];
KeyParameter key = new KeyParameter(keyBytes);
byte[] hashedData = new byte[31];
for (int i = 0; i < hashedData.Length; i++)
{
hashedData[i] = (byte)i;
}
CMac cmac = new CMac(new AesEngine(), 128);
cmac.Init(key);
cmac.BlockUpdate(hashedData, 0, hashedData.Length);
byte[] hash = new byte[cmac.GetMacSize()];
cmac.DoFinal(hash, 0);
PrintBytes("hash", hash);
}
private static byte[] Scp03_mac(byte[] keybytes, byte[] msg, int lengthBits)
{
// FIXME: programmatically set the crypto backend
IBlockCipher cipher = new AesEngine();
CMac cmac = new CMac(cipher);
cmac.Init(new KeyParameter(keybytes));
cmac.BlockUpdate(msg, 0, msg.Length);
byte[] outVal = new byte[cmac.GetMacSize()];
cmac.DoFinal(outVal, 0);
return(Arrays.CopyOf(outVal, lengthBits / 8));
}
private byte[] AesCMac(byte[] inputBytes)
{
var mac = new CMac(_myAes);
var keyParam = new KeyParameter(_config.DigestKey);
mac.Init(keyParam);
mac.BlockUpdate(inputBytes, 0, inputBytes.Length);
var hash = new byte[mac.GetMacSize()];
mac.DoFinal(hash, 0);
return(hash);
}