private byte[] GetProperty(IntPtr hAlg, string name)
{
var size = 0;
var status = BCrypt.BCryptGetProperty(hAlg, name, null, 0, ref size, 0x0);
if (status != BCrypt.ERROR_SUCCESS)
{
throw new CryptographicException(
$"BCrypt.BCryptGetProperty() (get size) failed with status code:{status}");
}
var value = new byte[size];
status = BCrypt.BCryptGetProperty(hAlg, name, value, value.Length, ref size, 0x0);
if (status != BCrypt.ERROR_SUCCESS)
{
throw new CryptographicException($"BCrypt.BCryptGetProperty() failed with status code:{status}");
}
return(value);
}
private IntPtr OpenAlgorithmProvider(string alg, string provider, string chainingMode)
{
var status = BCrypt.BCryptOpenAlgorithmProvider(out var hAlg, alg, provider, 0x0);
if (status != BCrypt.ERROR_SUCCESS)
{
throw new CryptographicException(
$"BCrypt.BCryptOpenAlgorithmProvider() failed with status code:{status}");
}
var chainMode = Encoding.Unicode.GetBytes(chainingMode);
status = BCrypt.BCryptSetAlgorithmProperty(hAlg, BCrypt.BCRYPT_CHAINING_MODE, chainMode, chainMode.Length,
0x0);
if (status != BCrypt.ERROR_SUCCESS)
{
throw new CryptographicException(
$"BCrypt.BCryptSetAlgorithmProperty(BCrypt.BCRYPT_CHAINING_MODE, BCrypt.BCRYPT_CHAIN_MODE_GCM) failed with status code:{status}");
}
return(hAlg);
}