public ECDsa GetECDsaPrivateKey()
{
if (_privateKey == null || _privateKey.IsInvalid)
{
return(null);
}
using (SafeEcKeyHandle ecKeyHandle = Interop.libcrypto.EVP_PKEY_get1_EC_KEY(_privateKey))
{
return(new ECDsaOpenSsl(ecKeyHandle.DangerousGetHandle()));
}
}
internal static int EcKeyGetCurveName(SafeEcKeyHandle ecKey)
{
bool mustRelease = false;
try
{
ecKey.DangerousAddRef(ref mustRelease);
IntPtr ecGroup = EC_KEY_get0_group(ecKey.DangerousGetHandle());
int nid = EC_GROUP_get_curve_name(ecGroup);
return(nid);
}
finally
{
if (mustRelease)
{
ecKey.DangerousRelease();
}
}
}