From 07f0376b4547559cf8cae37c85d81fb310f2ceea Mon Sep 17 00:00:00 2001
From: de4dot <de4dot@gmail.com>
Date: Fri, 25 Nov 2011 15:21:29 +0100
Subject: [PATCH] Add methods to encrypt resource data, and set new data

---
 .../dotNET_Reactor/EncryptedResource.cs       | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/de4dot.code/deobfuscators/dotNET_Reactor/EncryptedResource.cs b/de4dot.code/deobfuscators/dotNET_Reactor/EncryptedResource.cs
index 97d9d780..cda5905f 100644
--- a/de4dot.code/deobfuscators/dotNET_Reactor/EncryptedResource.cs
+++ b/de4dot.code/deobfuscators/dotNET_Reactor/EncryptedResource.cs
@@ -162,5 +162,27 @@ namespace de4dot.deobfuscators.dotNET_Reactor {
 				}
 			}
 		}
+
+		public byte[] encrypt(byte[] data) {
+			if (key == null || iv == null)
+				throw new ApplicationException("Can't encrypt resource");
+
+			using (var aes = new RijndaelManaged { Mode = CipherMode.CBC }) {
+				using (var transform = aes.CreateEncryptor(key, iv)) {
+					return transform.TransformFinalBlock(data, 0, data.Length);
+				}
+			}
+		}
+
+		public void updateResource(byte[] encryptedData) {
+			for (int i = 0; i < module.Resources.Count; i++) {
+				if (module.Resources[i] == encryptedDataResource) {
+					encryptedDataResource = new EmbeddedResource(encryptedDataResource.Name, encryptedDataResource.Attributes, encryptedData);
+					module.Resources[i] = encryptedDataResource;
+					return;
+				}
+			}
+			throw new ApplicationException("Could not find encrypted resource");
+		}
 	}
 }