private static X509Certificate2 SetEcDsaPrivateKey(X509Certificate2 cert, string privateKey)
{
string[] keyParts = privateKey.Split('-', StringSplitOptions.RemoveEmptyEntries);
byte[] keyBytes = Convert.FromBase64String(keyParts[1]);
ECDsa eccPrivateKey = ECDsa.Create();
if (eccPrivateKey == null)
{
throw new PlatformNotSupportedException("Unable to create ECDsa");
}
switch (keyParts[0])
{
case "BEGIN PRIVATE KEY":
eccPrivateKey.ImportPkcs8PrivateKey(keyBytes, out _);
break;
case "BEGIN EC PRIVATE KEY":
eccPrivateKey.ImportECPrivateKey(keyBytes, out _);
break;
default:
throw new ArgumentException("Invalid PrivateKey String", nameof(privateKey));
}
return(cert.CopyWithPrivateKey(eccPrivateKey).FixForWindows());
}
/// <summary>
/// Imports the ECDSA key from Pkcs8 format
/// </summary>
/// <param name="bytes">Private key store in the Pkcs8 format</param>
/// <returns>The ECDSA key</returns>
public static ECParameters ImportPrivateKey(byte[] bytes)
{
ECDsa ecDsa = ECDsa.Create(ECCurve.CreateFromFriendlyName("secp384r1"));
ecDsa.ImportPkcs8PrivateKey(bytes, out var _);
return(ecDsa.ExportParameters(true));
}
private static ECDsa CreatePrivateKeyAlgorithm(string keyPath)
{
try
{
var key = LoadPrivateKey(keyPath);
dsa = ECDsa.Create();
dsa.ImportPkcs8PrivateKey(key, out int _);
return(dsa);
}
catch (Exception ex)
{
_log.Error(ex);
return(null);
}
}
static string createJwtToken()
{
var payload = new Dictionary <string, object>()
{
{ "api_version", version },
{ "app_id", app_id },
{ "aud", app_uri },
{ "iat", DateTimeOffset.Now.ToUnixTimeSeconds() },
{ "jti", Guid.NewGuid() },
{ "access_token", access_token }
};
ECDsa key = ECDsa.Create();
key.ImportPkcs8PrivateKey(Convert.FromBase64String(private_key), out _);
string token = Jose.JWT.Encode(payload, key, JwsAlgorithm.ES256);
return(token);
}
