internal static ECDsa MakeExportable(this ECDsa ecdsa)
{
if (ecdsa is ECDsaCng dsaCng)
{
const CngExportPolicies Exportability =
CngExportPolicies.AllowExport |
CngExportPolicies.AllowPlaintextExport;
if ((dsaCng.Key.ExportPolicy & Exportability) == CngExportPolicies.AllowExport)
{
ECDsa copy = ECDsa.Create();
copy.ImportEncryptedPkcs8PrivateKey(
nameof(MakeExportable),
ecdsa.ExportEncryptedPkcs8PrivateKey(
nameof(MakeExportable),
new PbeParameters(
PbeEncryptionAlgorithm.TripleDes3KeyPkcs12,
HashAlgorithmName.SHA1,
2048)),
out _);
return(copy);
}
}
return(ecdsa);
}
private ECDsa getRootPrivateKey()
{
string keyFile = File.ReadAllText(_configuration["PrivateKeyPath"]);
// extract base64 encoded private key
Regex regex = new Regex(@"(-----BEGIN ENCRYPTED PRIVATE KEY-----)((.|\n)*)(-----END ENCRYPTED PRIVATE KEY-----)");
string keyBase64 = regex.Match(keyFile).Groups[2].ToString();
ECDsa eC = ECDsa.Create();
string pw = _configuration["PrivateKeyPw"];
// byte[] pwBytes = Encoding.UTF8.GetBytes(pw);
eC.ImportEncryptedPkcs8PrivateKey(Encoding.UTF8.GetBytes(pw), Convert.FromBase64String(keyBase64), out _);
return(eC);
}