From 5a15118706347647960086bd4b143b7902103e6b Mon Sep 17 00:00:00 2001
From: Alex Barney <thealexbarney@gmail.com>
Date: Sun, 9 Dec 2018 18:23:46 -0600
Subject: [PATCH] Use Aes128CtrTransform in DecryptRsaKey

---
 src/LibHac/Crypto.cs | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/src/LibHac/Crypto.cs b/src/LibHac/Crypto.cs
index 03b38622..1c0aaf48 100644
--- a/src/LibHac/Crypto.cs
+++ b/src/LibHac/Crypto.cs
@@ -106,21 +106,17 @@ namespace LibHac
         {
             var counter = new byte[0x10];
             Array.Copy(encryptedKey, counter, 0x10);
-            var body = new byte[0x230];
-            Array.Copy(encryptedKey, 0x10, body, 0, 0x230);
-            var dec = new byte[0x230];
+            var key = new byte[0x230];
+            Array.Copy(encryptedKey, 0x10, key, 0, 0x230);
 
-            using (var storageDec = new Aes128CtrStorage(new MemoryStorage(body), kek, counter, false))
-            {
-                storageDec.Read(dec, 0);
-            }
+            new Aes128CtrTransform(kek, counter).TransformBlock(key);
 
             var d = new byte[0x100];
             var n = new byte[0x100];
             var e = new byte[4];
-            Array.Copy(dec, 0, d, 0, 0x100);
-            Array.Copy(dec, 0x100, n, 0, 0x100);
-            Array.Copy(dec, 0x200, e, 0, 4);
+            Array.Copy(key, 0, d, 0, 0x100);
+            Array.Copy(key, 0x100, n, 0, 0x100);
+            Array.Copy(key, 0x200, e, 0, 4);
 
             BigInteger dInt = GetBigInteger(d);
             BigInteger nInt = GetBigInteger(n);