diff --git a/PKHeX/Saves/Substructures/MemeCrypto.cs b/PKHeX/Saves/Substructures/MemeCrypto.cs
index e9ba95f6e..cdee6f57a 100644
--- a/PKHeX/Saves/Substructures/MemeCrypto.cs
+++ b/PKHeX/Saves/Substructures/MemeCrypto.cs
@@ -200,9 +200,12 @@ private static byte[] RSAEncrypt(byte[] data)
         }
 
         private static byte[] ReverseCrypt(byte[] input)
-        {
+        {            
             if (input.Length != 0x80)
                 throw new ArgumentException("Invalid Memecrypto decryption byte[]!");
+
+            var sha1 = new SHA1CryptoServiceProvider();
+
             byte[] PubKeyDer = "307C300D06092A864886F70D0101010500036B003068026100B61E192091F90A8F76A6EAAA9A3CE58C863F39AE253F037816F5975854E07A9A456601E7C94C29759FE155C064EDDFA111443F81EF1A428CF6CD32F9DAC9D48E94CFB3F690120E8E6B9111ADDAF11E7C96208C37C0143FF2BF3D7E831141A9730203010001".ToByteArray();
             byte[] enc = new byte[0x60];
             Array.Copy(input, 0x20, enc, 0, 0x60);
@@ -210,15 +213,15 @@ private static byte[] ReverseCrypt(byte[] input)
             byte[] keybuf = new byte[PubKeyDer.Length + 0x20];
             Array.Copy(PubKeyDer, keybuf, PubKeyDer.Length);
             Array.Copy(input, 0, keybuf, PubKeyDer.Length, 0x20);
-            byte[] key = new SHA1Managed().ComputeHash(keybuf).Take(0x10).ToArray();
+            byte[] key = sha1.ComputeHash(keybuf).Take(0x10).ToArray();
 
             byte[] RSA = RSAEncrypt(enc);
             var dec = MemeCryptoAESDecrypt(key, RSA);
-            if (new SHA1Managed().ComputeHash(dec).Take(0x8).SequenceEqual(dec.Skip(0x58)))
+            if (sha1.ComputeHash(dec).Take(0x8).SequenceEqual(dec.Skip(0x58)))
                 return dec;
             RSA[0] |= 0x80;
             dec = MemeCryptoAESDecrypt(key, RSA);
-            if (new SHA1Managed().ComputeHash(dec).Take(0x8).SequenceEqual(dec.Skip(0x58)))
+            if (sha1.ComputeHash(dec).Take(0x8).SequenceEqual(dec.Skip(0x58)))
                 return dec;
             return null;
         }
@@ -228,6 +231,8 @@ public static byte[] Resign(byte[] sav7)
             if (sav7 == null || sav7.Length != 0x6BE00)
                 return null;
 
+            var sha1 = new SHA1CryptoServiceProvider();
+
             byte[] outSav = (byte[])sav7.Clone();
 
             byte[] CurSig = new byte[0x80];
@@ -242,13 +247,13 @@ public static byte[] Resign(byte[] sav7)
             byte[] keybuf = new byte[PubKeyDer.Length + 0x20];
             Array.Copy(PubKeyDer, keybuf, PubKeyDer.Length);
             Array.Copy(Hash, 0, keybuf, PubKeyDer.Length, 0x20);
-            byte[] key = new SHA1Managed().ComputeHash(keybuf).Take(0x10).ToArray();
+            byte[] key = sha1.ComputeHash(keybuf).Take(0x10).ToArray();
 
             byte[] secret = ReverseCrypt(CurSig) ?? new byte[0x60];
             byte[] secretWorkBuf = new byte[0x78];
             Hash.CopyTo(secretWorkBuf, 0);
             Array.Copy(secret, 0, secretWorkBuf, 0x20, 0x58);
-            Array.Copy(new SHA1Managed().ComputeHash(secretWorkBuf), 0, secret, 0x58, 8);
+            Array.Copy(sha1.ComputeHash(secretWorkBuf), 0, secret, 0x58, 8);
 
             Hash.CopyTo(outSav, 0x6BB00);
             byte[] MemeCrypted = MemeCryptoAESEncrypt(key, secret);