58 lines
1.9 KiB
C#
58 lines
1.9 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System.IO;
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using System.Runtime.Serialization;
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using System.Text;
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namespace Microsoft.AspNetCore.Authentication.WsFederation
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{
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public class CustomStateDataFormat : ISecureDataFormat<AuthenticationProperties>
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{
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public const string ValidStateData = "ValidStateData";
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private string lastSavedAuthenticationProperties;
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private DataContractSerializer serializer = new DataContractSerializer(typeof(AuthenticationProperties));
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public string Protect(AuthenticationProperties data)
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{
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lastSavedAuthenticationProperties = Serialize(data);
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return ValidStateData;
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}
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public string Protect(AuthenticationProperties data, string purpose)
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{
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return Protect(data);
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}
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public AuthenticationProperties Unprotect(string state)
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{
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return state == ValidStateData ? DeSerialize(lastSavedAuthenticationProperties) : null;
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}
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public AuthenticationProperties Unprotect(string protectedText, string purpose)
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{
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return Unprotect(protectedText);
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}
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private string Serialize(AuthenticationProperties data)
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{
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using (MemoryStream memoryStream = new MemoryStream())
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{
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serializer.WriteObject(memoryStream, data);
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memoryStream.Position = 0;
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return new StreamReader(memoryStream).ReadToEnd();
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}
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}
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private AuthenticationProperties DeSerialize(string state)
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{
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var stateDataAsBytes = Encoding.UTF8.GetBytes(state);
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using (var ms = new MemoryStream(stateDataAsBytes, false))
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{
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return (AuthenticationProperties)serializer.ReadObject(ms);
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}
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}
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}
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} |