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//-----------------------------------------------------------------------
// <copyright file="CryptoKey.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.Messaging.Bindings {
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Text;
using DotNetOpenAuth.Messaging;
using Validation;
/// <summary>
/// A cryptographic key and metadata concerning it.
/// </summary>
public class CryptoKey {
/// <summary>
/// Backing field for the <see cref="Key"/> property.
/// </summary>
private readonly byte[] key;
/// <summary>
/// Backing field for the <see cref="ExpiresUtc"/> property.
/// </summary>
private readonly DateTime expiresUtc;
/// <summary>
/// Initializes a new instance of the <see cref="CryptoKey"/> class.
/// </summary>
/// <param name="key">The cryptographic key.</param>
/// <param name="expiresUtc">The expires UTC.</param>
public CryptoKey(byte[] key, DateTime expiresUtc) {
Requires.NotNull(key, "key");
Requires.That(expiresUtc.Kind == DateTimeKind.Utc, "expiresUtc", "Time must be expressed in UTC.");
this.key = key;
this.expiresUtc = expiresUtc;
}
/// <summary>
/// Gets the key.
/// </summary>
[SuppressMessage("Microsoft.Performance", "CA1819:PropertiesShouldNotReturnArrays", Justification = "It's a buffer")]
public byte[] Key {
get {
return this.key;
}
}
/// <summary>
/// Gets the expiration date of this key (UTC time).
/// </summary>
public DateTime ExpiresUtc {
get {
return this.expiresUtc;
}
}
/// <summary>
/// Determines whether the specified <see cref="System.Object"/> is equal to this instance.
/// </summary>
/// <param name="obj">The <see cref="System.Object"/> to compare with this instance.</param>
/// <returns>
/// <c>true</c> if the specified <see cref="System.Object"/> is equal to this instance; otherwise, <c>false</c>.
/// </returns>
/// <exception cref="T:System.NullReferenceException">
/// The <paramref name="obj"/> parameter is null.
/// </exception>
public override bool Equals(object obj) {
var other = obj as CryptoKey;
if (other == null) {
return false;
}
return this.ExpiresUtc == other.ExpiresUtc
&& MessagingUtilities.AreEquivalent(this.Key, other.Key);
}
/// <summary>
/// Returns a hash code for this instance.
/// </summary>
/// <returns>
/// A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.
/// </returns>
public override int GetHashCode() {
return this.ExpiresUtc.GetHashCode();
}
}
}
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