Add comment to generate random bytes

Author: selfmadecode

Encrypt/AesEncryption/BaseAesEncryption.cs

@@ -36,6 +36,7 @@ public virtual byte[] EncryptAES(byte[] data, byte[] key, byte[] iv)
 
         // Method to generate a random byte array of given length
         // Used to get the IV
+        // Generate a random 16-byte IV for AES in CBC mode
         public static byte[] GenerateRandomBytes(int length)
         {
             byte[] randomBytes = new byte[length];