public static void DecryptDataWithMicrosoft(string fileName, RSAKey key)
{
string[] temp = fileName.Split('.');
string saveFileName = temp[0] + "_decryptedECB";
if (temp.Length == 2)
{
saveFileName = temp[0] + "_decryptedECB." + temp[1];
}
FileStream readStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
FileStream writeStream = new FileStream(saveFileName + "microsoft", FileMode.Create, FileAccess.Write);
using (StreamWriter writer = new StreamWriter(writeStream))
{
using (StreamReader sr = new StreamReader(readStream))
{
using (RSACryptoServiceProvider crypto = new RSACryptoServiceProvider())
{
RSAParameters rsaKey = new RSAParameters();
rsaKey.Modulus = key.n.ToByteArray();
rsaKey.Exponent = key.e.ToByteArray();
rsaKey.D = key.d.ToByteArray();
rsaKey.P = key.p.ToByteArray();
rsaKey.Q = key.q.ToByteArray();
rsaKey.DQ = (key.d % (key.q - 1)).ToByteArray();
rsaKey.DP = (key.d % (key.p - 1)).ToByteArray();
rsaKey.InverseQ = RSAKeyGenerator.ModularInverse(key.q, key.p).ToByteArray();
crypto.ImportParameters(rsaKey);
string line;
while ((line = sr.ReadLine()) != null)
{
byte[] bytes = Encoding.UTF8.GetBytes(line);
string testowy = Encoding.UTF8.GetString(bytes);
byte[] decryptedData = crypto.Decrypt(Convert.FromBase64String(testowy), RSAEncryptionPadding.Pkcs1);
writer.Write(Encoding.UTF8.GetString(decryptedData));
}
}
}
}
readStream.Close();
writeStream.Close();
}
public void SaveConfig()
{
FileStream stream = new FileStream("config.rsa", FileMode.OpenOrCreate);
using (StreamWriter sw = new StreamWriter(stream))
{
sw.WriteLine("asn1 = SEQUENCE:rsa_key");
sw.WriteLine("");
sw.WriteLine("[rsa_key]");
sw.WriteLine("version=INTEGER:0");
sw.WriteLine($"modulus=INTEGER:{n}");
sw.WriteLine($"pubExp=INTEGER:{e}");
sw.WriteLine($"privExp=INTEGER:{d}");
sw.WriteLine($"p=INTEGER:{p}");
sw.WriteLine($"q=INTEGER:{q}");
sw.WriteLine($"e1=INTEGER:{d % (p - 1)}");
sw.WriteLine($"e2=INTEGER:{d % (q - 1)}");
sw.WriteLine($"coeff=INTEGER:{RSAKeyGenerator.ModularInverse(q, p)}");
}
string cmdText = $"/C openssl asn1parse -genconf config.rsa -out newkey.der";
Process.Start("CMD.exe", cmdText);
Process proc = new Process();
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.RedirectStandardOutput = true;
proc.StartInfo.RedirectStandardError = true;
proc.StartInfo.FileName = "CMD.exe";
proc.StartInfo.Arguments = "/C openssl rsa -in newkey.der -inform der -text -check";
proc.EnableRaisingEvents = true;
proc.OutputDataReceived += Proc_OutputDataReceived;
proc.Start();
proc.BeginOutputReadLine();
proc.WaitForExit();
cmdText = $"/C openssl rsa -in newkey.der -inform DER -outform PEM -out id_rsa";
proc = Process.Start("CMD.exe", cmdText);
proc.WaitForExit();
cmdText = $"/C openssl rsa -in id_rsa -pubout > id_rsa.pub";
Process.Start("CMD.exe", cmdText);
}
