#96 - Fixed authentication when using a password containing unicode characters (#97)

Author: gpailler

MegaApiClient/Extensions.cs

@@ -2,6 +2,7 @@
 {
   using System;
   using System.IO;
+  using System.Linq;
   using System.Text;
 
   internal static class Extensions
@@ -41,6 +42,28 @@ public static byte[] ToBytes(this string data)
       return Encoding.UTF8.GetBytes(data);
     }
 
+    public static byte[] ToBytesPassword(this string data)
+    { 
+      // Store bytes characters in uint array
+      // discards bits 8-31 of multibyte characters for backwards compatibility
+      var array = new uint[(data.Length + 3) >> 2];
+      for (var i = 0; i < data.Length; i++)
+      {
+        array[i >> 2] |= (uint)(data[i] << (24 - (i & 3) * 8));
+      }
+
+      return array.SelectMany(x =>
+      {
+        var bytes = BitConverter.GetBytes(x);
+        if (BitConverter.IsLittleEndian)
+        {
+          Array.Reverse(bytes);
+        }
+
+        return bytes;
+      }).ToArray();
+    }
+
     public static T[] CopySubArray<T>(this T[] source, int length, int offset = 0)
     {
       T[] result = new T[length];

MegaApiClient/MegaApiClient.cs

@@ -102,7 +102,7 @@ public static AuthInfos GenerateAuthInfos(string email, string password)
       }
 
       // Retrieve password as UTF8 byte array
-      byte[] passwordBytes = password.ToBytes();
+      byte[] passwordBytes = password.ToBytesPassword();
 
       // Encrypt password to use password as key for the hash
       byte[] passwordAesKey = PrepareKey(passwordBytes);