109 lines
3.3 KiB
C#
109 lines
3.3 KiB
C#
//
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// Authors:
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// Marek Habersack <grendel@twistedcode.net>
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//
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// (C) 2011 Novell, Inc (http://novell.com/)
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Web;
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using System.Web.Configuration;
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using System.Web.Util;
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namespace System.Web.Security
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{
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public static class MachineKey
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{
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public static byte[] Decode (string encodedData, MachineKeyProtection protectionOption)
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{
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if (encodedData == null)
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throw new ArgumentNullException ("encodedData");
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int dlen = encodedData.Length;
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if (dlen == 0 || dlen % 2 == 1)
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throw new ArgumentException ("encodedData");
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byte[] data = MachineKeySectionUtils.GetBytes (encodedData, dlen);
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if (data == null || data.Length == 0)
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throw new ArgumentException ("encodedData");
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var config = WebConfigurationManager.GetWebApplicationSection ("system.web/machineKey") as MachineKeySection;
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byte[] result = null;
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Exception ex = null;
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try {
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switch (protectionOption) {
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case MachineKeyProtection.All:
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result = MachineKeySectionUtils.VerifyDecrypt (config, data);
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break;
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case MachineKeyProtection.Encryption:
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result = MachineKeySectionUtils.Decrypt (config, data);
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break;
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case MachineKeyProtection.Validation:
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result = MachineKeySectionUtils.Verify (config, data);
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break;
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default:
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return MachineKeySectionUtils.GetBytes (encodedData, dlen);
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}
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} catch (Exception e) {
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ex = e;
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}
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if (result == null || ex != null)
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throw new HttpException ("Unable to verify passed data.", ex);
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return result;
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}
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public static string Encode (byte[] data, MachineKeyProtection protectionOption)
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{
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if (data == null)
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throw new ArgumentNullException ("data");
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var config = WebConfigurationManager.GetWebApplicationSection ("system.web/machineKey") as MachineKeySection;
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byte[] result;
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switch (protectionOption) {
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case MachineKeyProtection.All:
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result = MachineKeySectionUtils.EncryptSign (config, data);
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break;
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case MachineKeyProtection.Encryption:
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result = MachineKeySectionUtils.Encrypt (config, data);
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break;
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case MachineKeyProtection.Validation:
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result = MachineKeySectionUtils.Sign (config, data);
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break;
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default:
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return String.Empty;
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}
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return MachineKeySectionUtils.GetHexString (result);
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}
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}
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}
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