public void TestSignAndVerify()
{
var handler = new AsymmetricCryptoHandler();
var hash = Hash.Parse("b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9");
var signature = handler.SignHash(hash, _privateKey);
Assert.NotNull(signature);
var result = handler.VerifyHash(hash, signature, _publicKey);
Assert.True(result);
var maliciousHash = Hash.Parse("535ceaca7d4c98e083cd3392037ec740af7cb6ce19af76e0ac04698203ac1292");
result = handler.VerifyHash(maliciousHash, signature, _publicKey);
Assert.False(result);
}
private void btnGenerateKeys_Click(object sender, EventArgs e)
{
string path = Environment.CurrentDirectory + @"\" + _KEYS_FILENAME;
if (!File.Exists(path))
{
File.Create(path).Close();
StreamWriter file = new StreamWriter(path, false);
file.WriteLine("; the asymmetric encryption will be used to store the key and iv of the");
file.WriteLine("; symmetric protocol.");
file.WriteLine("");
file.WriteLine("; used for encryption");
file.WriteLine("[Public]");
file.WriteLine("Modulus=");
file.WriteLine("Exponent=");
file.WriteLine("");
file.WriteLine("; used for decryption");
file.WriteLine("[Private]");
file.WriteLine("Modulus=");
file.WriteLine("Exponent=");
file.WriteLine("P=");
file.WriteLine("Q=");
file.WriteLine("DP=");
file.WriteLine("DQ=");
file.WriteLine("Inverse=");
file.WriteLine("D=");
file.WriteLine("");
file.WriteLine("[Symmetric]");
file.WriteLine("Key=");
file.WriteLine("IV=");
file.Close();
file.Dispose();
file = null;
}
IniFileName iniFile = new IniFileName(path);
//Generate a public/private key pair.
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
//Save the public key information to an RSAParameters structure.
RSAParameters publicInfo = rsa.ExportParameters(false);
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
tdes.GenerateIV();
tdes.GenerateKey();
AsymmetricCryptoHandler crypto = new AsymmetricCryptoHandler(publicInfo, true);
byte[] key = crypto.Encrypt(tdes.Key);
byte[] iv = crypto.Encrypt(tdes.IV);
iniFile.SetValue("Public", "Modulus", Convert.ToBase64String(publicInfo.Modulus));
iniFile.SetValue("Public", "Exponent", Convert.ToBase64String(publicInfo.Exponent));
RSAParameters keyInfo = rsa.ExportParameters(true);
iniFile.SetValue("Private", "Modulus", Convert.ToBase64String(keyInfo.Modulus));
iniFile.SetValue("Private", "Exponent", Convert.ToBase64String(keyInfo.Exponent));
iniFile.SetValue("Private", "P", Convert.ToBase64String(keyInfo.P));
iniFile.SetValue("Private", "Q", Convert.ToBase64String(keyInfo.Q));
iniFile.SetValue("Private", "DP", Convert.ToBase64String(keyInfo.DP));
iniFile.SetValue("Private", "DQ", Convert.ToBase64String(keyInfo.DQ));
iniFile.SetValue("Private", "Inverse", Convert.ToBase64String(keyInfo.InverseQ));
iniFile.SetValue("Private", "D", Convert.ToBase64String(keyInfo.D));
iniFile.SetValue("Symmetric", "Key", Convert.ToBase64String(key));
iniFile.SetValue("Symmetric", "IV", Convert.ToBase64String(iv));
StreamWriter csFile = new StreamWriter(Environment.CurrentDirectory + @"\csharp.cs", false);
csFile.WriteLine($"private byte[] _MODULUS = {GenerateArrayString(keyInfo.Modulus)};");
csFile.WriteLine($"private byte[] _EXPONENT = {GenerateArrayString(keyInfo.Exponent)};");
csFile.WriteLine($"private byte[] _P = {GenerateArrayString(keyInfo.P)};");
csFile.WriteLine($"private byte[] _Q = {GenerateArrayString(keyInfo.Q)};");
csFile.WriteLine($"private byte[] _DP = {GenerateArrayString(keyInfo.DP)};");
csFile.WriteLine($"private byte[] _DQ = {GenerateArrayString(keyInfo.DQ)};");
csFile.WriteLine($"private byte[] _INVERSE = {GenerateArrayString(keyInfo.InverseQ)};");
csFile.WriteLine($"private byte[] _D = {GenerateArrayString(keyInfo.D)};");
csFile.WriteLine($"");
csFile.WriteLine($"private byte[] _SYM_KEY = {GenerateArrayString(key)};");
csFile.WriteLine($"private byte[] _SYM_IV = {GenerateArrayString(iv)};");
csFile.Close();
csFile.Dispose();
}