private void longBlockTest()
{
byte[] data = new byte[16000];
byte[] res = new byte[32];
for (int i = 0; i != data.Length; i++)
{
data[i] = (byte)i;
}
for (int i = 10000; i != data.Length; i++)
{
CShakeDigest cshake_ = new CShakeDigest(128, new byte[0], Arrays.CopyOfRange(data, 0, i));
cshake_.BlockUpdate(Hex.Decode("00010203"), 0, 4);
cshake_.DoFinal(res, 0);
}
CShakeDigest cshake = new CShakeDigest(256, new byte[0], new byte[200]);
cshake.BlockUpdate(Arrays.CopyOfRange(data, 0, 200), 0, 200);
cshake.DoFinal(res, 0);
Assert.IsTrue(Arrays.AreEqual(Hex.Decode("4a899b5be460d85a9789215bc17f88b8f8ac049bd3b519f561e7b5d3870dafa3"), res));
}
public int DoFinal(byte[] output, int outOff)
{
if (firstOutput)
{
if (!initialised)
{
throw new InvalidOperationException("KMAC not initialized");
}
byte[] encOut = XofUtilities.RightEncode(GetMacSize() * 8);
cshake.BlockUpdate(encOut, 0, encOut.Length);
}
int rv = cshake.DoFinal(output, outOff, GetMacSize());
Reset();
return(rv);
}
private void CalculateDigest(ulong[] words)
{
var hasher = new CShakeDigest(256, null, Encoding.ASCII.GetBytes("ROM_CTRL"));
foreach (var word in words)
{
hasher.BlockUpdate(BitConverter.GetBytes(word), 0, 8);
}
hasher.DoFinal(digest, 0, digest.Length);
CheckDigest();
}
private void doFinalTest()
{
CShakeDigest cshake = new CShakeDigest(128, new byte[0], Strings.ToByteArray("Email Signature"));
cshake.BlockUpdate(Hex.Decode("00010203"), 0, 4);
byte[] res = new byte[32];
cshake.DoOutput(res, 0, res.Length);
Assert.IsTrue(Arrays.AreEqual(Hex.Decode("c1c36925b6409a04f1b504fcbca9d82b4017277cb5ed2b2065fc1d3814d5aaf5"), res));
cshake.DoOutput(res, 0, res.Length);
Assert.IsTrue(!Arrays.AreEqual(Hex.Decode("c1c36925b6409a04f1b504fcbca9d82b4017277cb5ed2b2065fc1d3814d5aaf5"), res));
cshake.DoFinal(res, 0, res.Length);
cshake.BlockUpdate(Hex.Decode("00010203"), 0, 4);
cshake.DoFinal(res, 0, res.Length);
string s = Hex.ToHexString(res);
Console.WriteLine(s);
Assert.IsTrue(Arrays.AreEqual(Hex.Decode("c1c36925b6409a04f1b504fcbca9d82b4017277cb5ed2b2065fc1d3814d5aaf5"), res));
cshake.BlockUpdate(Hex.Decode("00010203"), 0, 4);
cshake.DoOutput(res, 0, res.Length);
Assert.IsTrue(Arrays.AreEqual(Hex.Decode("c1c36925b6409a04f1b504fcbca9d82b4017277cb5ed2b2065fc1d3814d5aaf5"), res));
cshake.DoFinal(res, 0, res.Length);
Assert.IsTrue(Arrays.AreEqual(Hex.Decode("9cbce830079c452abdeb875366a49ebfe75b89ef17396e34898e904830b0e136"), res));
}
private void checkSHAKE(int bitSize, CShakeDigest cshake, byte[] msg)
{
ShakeDigest ref_ = new ShakeDigest(bitSize);
ref_.BlockUpdate(msg, 0, msg.Length);
cshake.BlockUpdate(msg, 0, msg.Length);
byte[] res1 = new byte[32];
byte[] res2 = new byte[32];
ref_.DoFinal(res1, 0, res1.Length);
cshake.DoFinal(res2, 0, res2.Length);
Assert.IsTrue(Arrays.AreEqual(res1, res2));
}
private static void Main()
{
Console.WriteLine("Hello World!");
const int hashchainLength = 1000_000;
//해시체인 시드
var randomBytes = new byte[1000];
using var c = new RNGCryptoServiceProvider();
//시드 생성
c.GetBytes(randomBytes);
const int outputLength = 25;
const string functionName = "hello";
const string customization = "world";
var cShakeDigest =
new CShakeDigest(256,
Encoding.ASCII.GetBytes(functionName),
Encoding.ASCII.GetBytes(customization));
var previousHash = randomBytes;
for (int i = 0; i < hashchainLength; i++)
{
cShakeDigest.Reset();
cShakeDigest.BlockUpdate(previousHash, 0, previousHash.Length);
var hash = new byte[outputLength];
cShakeDigest.DoFinal(hash, 0, outputLength);
previousHash = hash;
// var hashString = BitConverter.ToString(hash).Replace("-", string.Empty).ToLowerInvariant();
// Console.WriteLine($"{i} {hashString}");
}
Console.WriteLine("done");
}
