From e6181c24124d97f2fbc932b8a68311e625463156 Mon Sep 17 00:00:00 2001
From: uzvkl <dennis.kobert@student.kit.edu>
Date: Tue, 11 Jun 2019 23:05:52 +0200
Subject: Move dsa related stuff to subfolder

---
 FireBase/FirebaseKeyGenerator.cs | 79 ----------------------------------------
 1 file changed, 79 deletions(-)
 delete mode 100644 FireBase/FirebaseKeyGenerator.cs

(limited to 'FireBase/FirebaseKeyGenerator.cs')

diff --git a/FireBase/FirebaseKeyGenerator.cs b/FireBase/FirebaseKeyGenerator.cs
deleted file mode 100644
index 37beed5..0000000
--- a/FireBase/FirebaseKeyGenerator.cs
+++ /dev/null
@@ -1,79 +0,0 @@
-using System;
-using System.Text;
-
-namespace Firebase.Database
-{
-    /// <summary>
-    ///     Offline key generator which mimics the official Firebase generators.
-    ///     Credit: https://github.com/bubbafat/FirebaseSharp/blob/master/src/FirebaseSharp.Portable/FireBasePushIdGenerator.cs
-    /// </summary>
-    public class FirebaseKeyGenerator
-    {
-        // Modeled after base64 web-safe chars, but ordered by ASCII.
-        private const string PushCharsString = "-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz";
-        private static readonly char[] PushChars;
-        private static readonly DateTimeOffset Epoch = new DateTimeOffset(1970, 1, 1, 0, 0, 0, 0, TimeSpan.Zero);
-
-        private static readonly Random random = new Random();
-        private static readonly byte[] lastRandChars = new byte[12];
-
-        // Timestamp of last push, used to prevent local collisions if you push twice in one ms.
-        private static long lastPushTime;
-
-        static FirebaseKeyGenerator()
-        {
-            PushChars = Encoding.UTF8.GetChars(Encoding.UTF8.GetBytes(PushCharsString));
-        }
-
-        /// <summary>
-        ///     Returns next firebase key based on current time.
-        /// </summary>
-        /// <returns>
-        ///     The <see cref="string" />.
-        /// </returns>
-        public static string Next()
-        {
-            // We generate 72-bits of randomness which get turned into 12 characters and
-            // appended to the timestamp to prevent collisions with other clients. We store the last
-            // characters we generated because in the event of a collision, we'll use those same
-            // characters except "incremented" by one.
-            var id = new StringBuilder(20);
-            var now = (long) (DateTimeOffset.Now - Epoch).TotalMilliseconds;
-            var duplicateTime = now == lastPushTime;
-            lastPushTime = now;
-
-            var timeStampChars = new char[8];
-            for (var i = 7; i >= 0; i--)
-            {
-                var index = (int) (now % PushChars.Length);
-                timeStampChars[i] = PushChars[index];
-                now = (long) Math.Floor((double) now / PushChars.Length);
-            }
-
-            if (now != 0) throw new Exception("We should have converted the entire timestamp.");
-
-            id.Append(timeStampChars);
-
-            if (!duplicateTime)
-            {
-                for (var i = 0; i < 12; i++) lastRandChars[i] = (byte) random.Next(0, PushChars.Length);
-            }
-            else
-            {
-                // If the timestamp hasn't changed since last push, use the same random number,
-                // except incremented by 1.
-                var lastIndex = 11;
-                for (; lastIndex >= 0 && lastRandChars[lastIndex] == PushChars.Length - 1; lastIndex--)
-                    lastRandChars[lastIndex] = 0;
-
-                lastRandChars[lastIndex]++;
-            }
-
-            for (var i = 0; i < 12; i++) id.Append(PushChars[lastRandChars[i]]);
-
-            if (id.Length != 20) throw new Exception("Length should be 20.");
-
-            return id.ToString();
-        }
-    }
-}
\ No newline at end of file
-- 
cgit v1.2.3-54-g00ecf