32 lines
947 B
C#
32 lines
947 B
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;
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using Microsoft.Framework.Internal;
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namespace Microsoft.AspNet.Authentication.DataHandler.Encoder
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{
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public class Base64UrlTextEncoder : ITextEncoder
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{
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public string Encode([NotNull] byte[] data)
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{
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return Convert.ToBase64String(data).TrimEnd('=').Replace('+', '-').Replace('/', '_');
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}
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public byte[] Decode([NotNull] string text)
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{
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return Convert.FromBase64String(Pad(text.Replace('-', '+').Replace('_', '/')));
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}
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private static string Pad(string text)
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{
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var padding = 3 - ((text.Length + 3) % 4);
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if (padding == 0)
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{
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return text;
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}
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return text + new string('=', padding);
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}
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}
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}
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