//******************************************************************************************************// Common.cs - Gbtc//// Copyright © 2012, Grid Protection Alliance. All Rights Reserved.//// Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See// the NOTICE file distributed with this work for additional information regarding copyright ownership.// The GPA licenses this file to you under the MIT License (MIT), the "License"; you may// not use this file except in compliance with the License. You may obtain a copy of the License at://// http://www.opensource.org/licenses/MIT//// Unless agreed to in writing, the subject software distributed under the License is distributed on an// "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the// License for the specific language governing permissions and limitations.//// Code Modification History:// ----------------------------------------------------------------------------------------------------// 05/24/2011 - J. Ritchie Carroll// Generated original version of source code.// 12/20/2012 - Starlynn Danyelle Gilliam// Modified Header.////****************************************************************************************************** using System.Security.Cryptography;using GSF.Threading;using Microsoft.Win32; namespace GSF.TimeSeries.Transport{ /// <summary> /// Common static methods and extensions for transport library. /// </summary> public static class Common { // Flag that determines if managed encryption wrappers should be used over FIPS-compliant algorithms. private static readonly bool s_useManagedEncryption; // Static Constructor static Common() {#if MONO s_useManagedEncryption = true;#else const string fipsKeyOld = "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Lsa"; const string fipsKeyNew = "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Lsa\\FipsAlgorithmPolicy"; // Determine if the operating system configuration to set to use FIPS-compliant algorithms s_useManagedEncryption = (Registry.GetValue(fipsKeyNew, "Enabled", 0) ?? Registry.GetValue(fipsKeyOld, "FipsAlgorithmPolicy", 0)).ToString() == "0";#endif } /// <summary> /// Gets flag that determines if managed encryption should be used. /// </summary> public static bool UseManagedEncryption { get { return s_useManagedEncryption; } } /// <summary> /// Gets an AES symmetric algorithm to use for encryption or decryption. /// </summary> public static SymmetricAlgorithm SymmetricAlgorithm { get { Aes symmetricAlgorithm; if (s_useManagedEncryption) symmetricAlgorithm = new AesManaged(); else symmetricAlgorithm = new AesCryptoServiceProvider(); symmetricAlgorithm.KeySize = 256; return symmetricAlgorithm; } } // Reference same static timer for the Time-Series Library in root common internal static readonly SharedTimerScheduler TimerScheduler = TimeSeries.Common.TimerScheduler; }}
//******************************************************************************************************
// Common.cs - Gbtc
//
// Copyright © 2012, Grid Protection Alliance. All Rights Reserved.
//
// Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See
// the NOTICE file distributed with this work for additional information regarding copyright ownership.
// The GPA licenses this file to you under the MIT License (MIT), the "License"; you may
// not use this file except in compliance with the License. You may obtain a copy of the License at:
//
// http://www.opensource.org/licenses/MIT
//
// Unless agreed to in writing, the subject software distributed under the License is distributed on an
// "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the
// License for the specific language governing permissions and limitations.
//
// Code Modification History:
// ----------------------------------------------------------------------------------------------------
// 05/24/2011 - J. Ritchie Carroll
// Generated original version of source code.
// 12/20/2012 - Starlynn Danyelle Gilliam
// Modified Header.
//
//******************************************************************************************************
using System.Security.Cryptography;
using GSF.Threading;
using Microsoft.Win32;
namespace GSF.TimeSeries.Transport
{
/// <summary>
/// Common static methods and extensions for transport library.
/// </summary>
public static class Common
{
// Flag that determines if managed encryption wrappers should be used over FIPS-compliant algorithms.
private static readonly bool s_useManagedEncryption;
// Static Constructor
static Common()
{
#if MONO
s_useManagedEncryption = true;
#else
const string fipsKeyOld = "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Lsa";
const string fipsKeyNew = "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Lsa\\FipsAlgorithmPolicy";
// Determine if the operating system configuration to set to use FIPS-compliant algorithms
s_useManagedEncryption = (Registry.GetValue(fipsKeyNew, "Enabled", 0) ?? Registry.GetValue(fipsKeyOld, "FipsAlgorithmPolicy", 0)).ToString() == "0";
#endif
}
/// <summary>
/// Gets flag that determines if managed encryption should be used.
/// </summary>
public static bool UseManagedEncryption
{
get
{
return s_useManagedEncryption;
}
}
/// <summary>
/// Gets an AES symmetric algorithm to use for encryption or decryption.
/// </summary>
public static SymmetricAlgorithm SymmetricAlgorithm
{
get
{
Aes symmetricAlgorithm;
if (s_useManagedEncryption)
symmetricAlgorithm = new AesManaged();
else
symmetricAlgorithm = new AesCryptoServiceProvider();
symmetricAlgorithm.KeySize = 256;
return symmetricAlgorithm;
}
}
// Reference same static timer for the Time-Series Library in root common
internal static readonly SharedTimerScheduler TimerScheduler = TimeSeries.Common.TimerScheduler;
}
}