diff --git a/ArcFormats/Camellia.cs b/ArcFormats/Camellia.cs
index a2db2bde..b04b6bb4 100644
--- a/ArcFormats/Camellia.cs
+++ b/ArcFormats/Camellia.cs
@@ -34,7 +34,7 @@ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 using System;
 
-namespace GameRes.Encryption
+namespace GameRes.Cryptography
 {
     public class Camellia
     {
diff --git a/ArcFormats/CatSystem/ArcINT.cs b/ArcFormats/CatSystem/ArcINT.cs
index 1ba3999f..32a7891c 100644
--- a/ArcFormats/CatSystem/ArcINT.cs
+++ b/ArcFormats/CatSystem/ArcINT.cs
@@ -34,7 +34,7 @@ using Simias.Encryption;
 using System.Runtime.InteropServices;
 using GameRes.Formats.Strings;
 using GameRes.Formats.Properties;
-using GameRes.Utility;
+using GameRes.Cryptography;
 
 namespace GameRes.Formats.CatSystem
 {
diff --git a/ArcFormats/CsWare/ArcPCS.cs b/ArcFormats/CsWare/ArcPCS.cs
index d3c9c727..93a247ad 100644
--- a/ArcFormats/CsWare/ArcPCS.cs
+++ b/ArcFormats/CsWare/ArcPCS.cs
@@ -28,6 +28,7 @@ using System.Collections.Generic;
 using System.ComponentModel.Composition;
 using System.IO;
 using System.Security.Cryptography;
+using GameRes.Cryptography;
 using GameRes.Utility;
 
 namespace GameRes.Formats.CsWare
diff --git a/ArcFormats/ExHibit/ImageGYU.cs b/ArcFormats/ExHibit/ImageGYU.cs
index a0f968a4..d8844521 100644
--- a/ArcFormats/ExHibit/ImageGYU.cs
+++ b/ArcFormats/ExHibit/ImageGYU.cs
@@ -30,6 +30,7 @@ using System.Windows.Media.Imaging;
 using System.Windows.Media;
 using GameRes.Utility;
 using GameRes.Compression;
+using GameRes.Cryptography;
 
 namespace GameRes.Formats.ExHibit
 {
diff --git a/ArcFormats/Malie/ArcLIB.cs b/ArcFormats/Malie/ArcLIB.cs
index 31baa34b..fefe925a 100644
--- a/ArcFormats/Malie/ArcLIB.cs
+++ b/ArcFormats/Malie/ArcLIB.cs
@@ -27,9 +27,8 @@ using System;
 using System.Collections.Generic;
 using System.ComponentModel.Composition;
 using System.IO;
-using System.Linq;
 using System.Text;
-using GameRes.Encryption;
+using GameRes.Cryptography;
 using GameRes.Utility;
 
 namespace GameRes.Formats.Malie
diff --git a/ArcFormats/MersenneTwister.cs b/ArcFormats/MersenneTwister.cs
index 8fbc41ea..92d272e8 100644
--- a/ArcFormats/MersenneTwister.cs
+++ b/ArcFormats/MersenneTwister.cs
@@ -7,7 +7,7 @@
 // C# port by morkt
 //
 
-namespace GameRes.Utility
+namespace GameRes.Cryptography
 {
     public class MersenneTwister
     {