//public void SignUseAPrivateKey(string signFile, string needToSignFile, string ecdSaKeyFile)
//{
// SHA256Provider s256 = new SHA256Provider();
// byte[] s256R = s256.ComputeFile(needToSignFile);
// StreamReader sr = new StreamReader(ecdSaKeyFile);
// String s = sr.ReadToEnd();
// sr.Close();
// ECDsaProvider esa = ECDsaProvider.CreateUseAXMLKeyFile(s);
// byte[] sign = esa.SignFile(needToSignFile);
// File.Create(signFile).Close();
// StreamWriter sw = new StreamWriter(signFile);
// sw.WriteLine("=== Start ECDSA Sign ===");
// int i = 0;
// foreach (byte b in sign)
// {
// StringBuilder sb = new StringBuilder();
// sb.Append(b);
// sw.Write(sb.ToString());
// if ((sign.Length - 1) != i)
// {
// sw.Write(',');
// }
// i++;
// }
// sw.WriteLine();
// sw.WriteLine("=== End ECDSA Sign ===");
// sw.WriteLine();
// sw.WriteLine("=== Start Sha256 Sign ===");
// i = 0;
// foreach (byte b in s256R)
// {
// StringBuilder sb = new StringBuilder();
// sb.Append(b);
// sw.Write(sb.ToString());
// if ((s256R.Length - 1) != i)
// {
// sw.Write(',');
// }
// i++;
// }
// sw.WriteLine();
// sw.Write("=== End Sha256 Sign ===");
// sw.Close();
//}
public string SignAsNewKeyAndExportPublicKeyAsXml(string signFile, string needToSignFile, string keyName)
{
SHA256Provider s256 = new SHA256Provider();
byte[] s256R = s256.ComputeFile(needToSignFile);
ECDsaProvider esa = new ECDsaProvider(keyName, null);
CngKey k = esa.Key;
byte[] sign = esa.SignFile(needToSignFile);
File.Create(signFile).Close();
StreamWriter sw = new StreamWriter(signFile);
sw.WriteLine("=== Start ECDSA Sign ===");
int i = 0;
foreach (byte b in sign)
{
StringBuilder sb = new StringBuilder();
sb.Append(b);
sw.Write(sb.ToString());
if ((sign.Length - 1) != i)
{
sw.Write(',');
}
i++;
}
sw.WriteLine();
sw.WriteLine("=== End ECDSA Sign ===");
sw.WriteLine();
sw.WriteLine("=== Start Sha256 Sign ===");
i = 0;
foreach (byte b in s256R)
{
StringBuilder sb = new StringBuilder();
sb.Append(b);
sw.Write(sb.ToString());
if ((s256R.Length - 1) != i)
{
sw.Write(',');
}
i++;
}
sw.WriteLine();
sw.Write("=== End Sha256 Sign ===");
sw.Close();
return(esa.ToXmlString);
}
/// <summary>
/// Check Sign.
/// </summary>
/// <param name="signFile">The signture file.</param>
/// <param name="verifyFile">The file need to verify.</param>
/// <param name="ecdSaKeyFile">The ECDsa Public keyring.</param>
/// <returns>Result.</returns>
public bool Check(string signFile, string verifyFile, string ecdSaKeyFile)
{
StreamReader sr = new StreamReader(signFile);
string result = sr.ReadToEnd();
sr.Close();
if (!result.StartsWith("=== Start ECDSA Sign ==="))
{
throw new InvalidDataException();
}
StringBuilder sb = new StringBuilder();
sb.Append(result);
sb.Replace("=== Start ECDSA Sign ===", "");
sb.Replace("=== End ECDSA Sign ===", "\\");
sb.Replace("=== Start Sha256 Sign ===", "");
sb.Replace("=== End Sha256 Sign ===", "");
string APResult = sb.ToString().Trim();
string[] diffSign = APResult.Split('\\');
StreamReader ecdKSR = new StreamReader(ecdSaKeyFile);
string s = ecdKSR.ReadToEnd();
ecdKSR.Close();
ECDsaProvider esa = ECDsaProvider.CreateUseAXMLKeyFile(s);
bool esaRe = esa.VerifyBytes(diffSign[0], verifyFile);
SHA256Provider s256 = new SHA256Provider();
byte[] s256R = s256.ComputeFile(verifyFile);
bool s256Re = true;
string[] signBlockStrArray = diffSign[1].Split(',');
byte[] signBlock = new byte[signBlockStrArray.Length];
int i = 0;
foreach (string item in signBlockStrArray)
{
signBlock[i] = byte.Parse(item);
i++;
}
i = 0;
foreach (byte b1 in signBlock)
{
if (b1 != signBlock[i])
{
s256Re = false;
}
i++;
}
return(s256Re & esaRe);
}