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//-----------------------------------------------------------------------
// <copyright file="AuthorizationServerAccessToken.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OAuth2 {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.Messaging.Bindings;
using DotNetOpenAuth.OAuth2.ChannelElements;
/// <summary>
/// An access token minted by the authorization server that can be serialized for transmission to the client.
/// </summary>
public class AuthorizationServerAccessToken : AccessToken {
/// <summary>
/// Initializes a new instance of the <see cref="AuthorizationServerAccessToken"/> class.
/// </summary>
public AuthorizationServerAccessToken() {
}
/// <summary>
/// Gets or sets the crypto service provider with the asymmetric private key to use for signing access tokens.
/// </summary>
/// <returns>A crypto service provider instance that contains the private key.</returns>
/// <value>Must not be null, and must contain the private key.</value>
/// <remarks>
/// The public key in the private/public key pair will be used by the resource
/// servers to validate that the access token is minted by a trusted authorization server.
/// </remarks>
public RSACryptoServiceProvider AccessTokenSigningKey { get; set; }
/// <summary>
/// Gets or sets the key to encrypt the access token.
/// </summary>
public RSACryptoServiceProvider ResourceServerEncryptionKey { get; set; }
/// <summary>
/// Gets or sets the symmetric key store to use if the asymmetric key properties are not set.
/// </summary>
public ICryptoKeyStore SymmetricKeyStore { get; set; }
/// <summary>
/// Serializes this instance to a simple string for transmission to the client.
/// </summary>
/// <returns>A non-empty string.</returns>
protected internal override string Serialize() {
ErrorUtilities.VerifyHost(this.AccessTokenSigningKey != null || this.SymmetricKeyStore != null, AuthServerStrings.AccessTokenSigningKeyMissing);
IDataBagFormatter<AccessToken> formatter;
if (this.AccessTokenSigningKey != null) {
formatter = CreateFormatter(this.AccessTokenSigningKey, this.ResourceServerEncryptionKey);
} else {
formatter = CreateFormatter(this.SymmetricKeyStore);
}
return formatter.Serialize(this);
}
}
}
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