I don't know if this is high priority or out of scope but I generally save my encrypted notepad material using GPG so I can save and open encrypted text on multiple devices, since that format has fairly broad support.

Add optional integration with windows context menu (e.g. in 7zip), when right clicking on files. It will be look like that:

Menu explanation

Encrypt - encrypt selected file;
Decrypt - decrypt selected file;
Encrypt and replace - encrypt selected file and replace it. This will be work like this:

• you right-click on some new.txt file;
• click this menu item;
• typing password for encryption;
• new.txt file will be deleted;
• instead of new.txt file will be a new, encrypted file, in the same place - new.cnp;

Describe the bug
hello
after launching the last update does not open the file saying that the password is incorrect, the password if it is the correct insurance. It has been right after the update.

To Reproduce
Steps to reproduce the behavior:
not posible open the notepad file

Expected behavior
hello
after launching the last update does not open the file saying that the password is incorrect, the password if it is the correct insurance. It has been right after the update

Screenshots
If applicable, add screenshots to help explain your problem.

Software version (please complete the following information):

• OS versionWindows 7
• App version [e.g. v1.4.4]

Additional context
Add any other context about the problem here.

Only in Windows 10 Creators Update appear wierd bug, when scrolling Crypto Notepad reports "overflow during arithmetical operation"

Output: https://pastebin.com/raw/s1cDQzZv

Let user to enable/disable auto-update on first launch.

Need to extend types of special symbols in password generator, because for now passwords generate only using this symbols: !#$%&*@\

Add paddings to editor between text and window borders, and give the opportunity to change these values.

Additional context

Keep the Crypto-Notepad open in task bar
whatever copied from web searches past onto a single text file continuously

Add tabs support, like in notepad++

Downloaded Crypto-Notepad version 1.6.7.0 on 8/19/20.
Downloaded Visual Studio Community 2019, downloaded Microsoft .NET Framework 4.6.1 Targeting Pack, Targeting Pack (ENU), and SDK.
Started "Build Solution", and received the following errors:

1>C:\Users\Paul\Downloads\Crypto-Notepad-master\Crypto Notepad\Forms\PasswordGeneratorFrom.cs(52,72,52,86): error CS0012: The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'.

1>C:\Users\Paul\Downloads\Crypto-Notepad-master\Crypto Notepad\Forms\PasswordGeneratorFrom.cs(56,23,61,71): error CS0012: The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'.

Don't know what to do at this point.

Expected behavior
A successful Build.

Software version (please complete the following information):

• OS version = Windows 10

Add status panel to the bottom of editor, like in NP++
It will be contain the different information, like number of lines, text length etc.
Also add able to hide it.

Additional context
Example of how it will be look

Crypto-Notepad is such a great tool, but this one thing kind of drives me crazy.

I'm using version 1.6.7 on Windows 10

So, when opening a file by way of drag and drop, a Windows association or File -> Open, the message The "Try to decrypt %filename% file?" pops up requiring an answer. This requires an (often) needless click when I think this process could be done better.

How? Perhaps opening files with the TXT extension as unencrypted by default (and provide an option in the interface to decrypt), the inverse goes for files using CNP - assuming these are encrypted.

It's possible it could be a program-wide option (Always assume TXT files are unencrypted), something like that.

To be able to open and close simple TXT files unimpeded (most often use case I'd imagine) and then offering the encrypted options when signalled, the program is far easier to use.

Add line numbers to editor.
This feature will be optional and can be disabled in settings.
Colors fonts and etc. must be customizable.

An example how it will be look:

Describe the bug
App does not closing after some actions.

To Reproduce

1. Open app.
2. Type some text.
3. Click [X] to close app
4. Click [Chancel] button in message box.
5. Delete all text.
6. Click [X] again.

Expected behavior
App must be closed.

Software version:

• OS version [Windows 10]
• App version [v1.4.0]

No matter if I choose "File > Save" or use combination "CTRL + S", text cursor will move to last line.

Im using v1.1.1 in Win10 (x64).

When files encrypted with large values of Password iterations (more then 1000000) files loading to slow. So need add some progress bar (maybe in title bar), which will display file load & save progress, and load & save files asynchronously.

In About the link to Sigmanor points at https://sigmanor.github.io/ and it redirects to https://sigmanor.net/, perhaps you may change this line:

Process.Start("https://sigmanor.github.io/");

to:

Process.Start("https://sigmanor.net/");

if you don't plan to move to https://sigmanor.github.io/ in the future.

Add support for Blowfish or/and SHA-3

Add possibility to save file and close it, without closing the app. I think it will be new menu item in New menu/ Something like this:

Add Crypto Notepad to "Send to" - when right click on a text files.

Sometimes after saving the file, there is no possibility to open it anymore, the password is incorrect.
This bug only appears in 1.1.3+ versions.

@h5p9sl can you help me to fix this? Because on version 1.1.2 I can't reproduce this bug, so it's appeared after the last updates, and I have not changed anything in the encryption code in recent updates. So I need your help.

To catch this bug I wrote a small code. This code is try to encrypt the opened file, and then decrypt it.

Loop that saving the file for a 10 times

            int i = 1;
            while (i != 10)
            {
                i++;
                Text = i.ToString();
                saveToolStripMenuItem1_Click_1(sender, e);
                CheckFileSavedCorrectly();
            }

This code is for open the file after saving

private void CheckFileSavedCorrectly()
        {
            string de = "";
            try
            {
                string opnfile = File.ReadAllText(OpenFile.FileName);
                de = AES.Decrypt(opnfile, PublicVar.encryptionKey.Get(), null, ps.HashAlgorithm, ps.PasswordIterations, ps.KeySize);
                customRTB.Text = de;
                string cc2 = customRTB.Text.Length.ToString(CultureInfo.InvariantCulture);
                customRTB.Select(Convert.ToInt32(cc2), 0);
            }
            catch (CryptographicException)
            {
                MessageBox.Show("Gotcha!");
            }

        }

How it works

I just searched "AES encryption" on Github to see what poor implementations of AES I could find and I came across your implementation.

There's quite a few issues with how you're using it here.

1. Insecure initialization vector -- I'll leave this to you to figure out why not picking a secure random IV for every encryption you do is bad. "16CHARSLONG12345" is most definitely not a secure, random IV.
2. Insecure password hashing -- Use a stronger hashing function like Bcrypt, scrypt, or pbkdf2.
3. Unauthenticated cipher mode -- You're using CBC without any authentication of any kind. Look into using CBC with HMAC or a different AEAD like GCM mode or using libsodium's SecretBox.
4. Ideally, you would derive different keys for each file. It looks like you're using the same key for every file.

There's probably more, but this was a quick look over.

Checkout "Cryptography Engineering" by Bruce Schneier and Niels Ferguson to learn how to safely and properly implement cryptographic functions like this.

Add password generator. This will be a separate window that can be called with the button in Enter Key, Change key window and from the main menu. Also will be possible to generate passwords with different lengths and dificulty

When toolbar is disabled, vertical scroll bar in editor is shifted down.

Screenshots

Video

Update
When Word Wrap in editor is disabled, horizontal scroll bar is also shifted right.

Describe the bug
Missing information message when connection is lost while checking updates.

Software version

• OS version [any]
• App version [v1.5.1]

Add able to encrypt/decrypt all file formats, not only *.cnp

Ctrl+Alt+S launches settings, which prevents to type "ś" mapped to the same key. "Ś" is a special Polish character.
I'd be glad if you could remap the "Settings" menu item to some other shortcut (please do not use Ctrl+Alt+Z, ..X, ..A, ..L, ..O ..E ..C either :))

Currently the user can start as many instances of Crypto Notepad as they may like. Of course this is not bad at all but in certain circumstances the user may need an option only a single instance of Crypto Notepad to be allowed. So I would like to suggest a new check-box (perhaps in Settings - Application):

• Single instance

which, when selected, would allow only a single instance of Crypto Notepad to be running.

If this option is selected and the user tries to open a new instance of Crypto Notepad there bight be a warning message telling the user that the program is already running,

The Single instance option might be particularly useful when Minimize to Tray (#35) is enabled- the program may be hidden in system tray and the user may forget that the program is already running,

You may consider adding a new command:

• Always on Top (or just On Top);

perhaps under Edit menu, CTRL+T keyboard shortcut seems logical.

I tried to use an external tool to achieve this (SmartSystemMenu, which adds additional commands in the title bar), screen:

but it didn't work as expected because the main window is always on top of Enter the encryption key window and it is impossible to enter the encryption key. So if Always on Top is implemented then Enter the encryption key window should be on top of the main window.

Always on Top feature may facilitate the use of drag&drop. But if you think that this is a fancy feature which requires too much work feel free to close this issue.

Add able to deactivate functionality of Insert keyboard button. For those people, who missclick while using Ctrl+Insert or Shift+Insert instead of Ctrl+C and Ctrl+V

It would be very handy if Crypto Notepad could detect URLs and mailto: links so these could be opened (either via double click or via CTRL+click) in the default web browser and in the default mail client.

It would be nice if Crypto Notepad supports drag and drop for TXT and CNP files. If a TXT file is dragged and dropped into Crypto Notepad it just opens it, while if a CNP file is dragged and dropped the program opens "Enter the encryption key:" dialog.

Describe the bug
New files don't saving when Save As & Save clicking.

To Reproduce
Steps to reproduce the behavior:

1. Open the Crypto Notepad.
2. Enter some text into the blank space of the text area.
3. Click Save&Save As, enter the password, choose the file name and location.
4. The file name is immediately created (it even appears File saved on the status bar, and then Ready), but the file just created is empty and with 0 bytes size.

Software version:

• OS version [any]
• App version [v1.6.2]

As tray support is coming (#35) I would like to suggest a very tiny, cosmetic enhancement- icons for tray commands Show and Exit, screen:

Perhaps tray commands should be iconized only when Settings - Application - Menu icons is enabled.

Description

Add able to drag & drop *.cnp files on executable to open it.

Not really necessary feature, and it's can be implemented with a few lines of code, but I decide to add it for full support of drag & drop ideology. So, this feature will be added in the next minor update, of course if there will be enough changes for release a new version.

Video preview

I would like to suggest a small enhancement which would be useful at least for me- and option to minimize Crypto Notepad to system tray. Currently I use an external tool to achieve this- SmartSystemMenu, which adds additional commands to title bar, screen:

but native support for system tray would be better. Perhaps you may add a couple of new check boxes under Tools - Settings - Application:

• Minimize to tray;
• Close to tray;

When Minimize to tray is enabled the program goes to system tray on minimize.
When Close to tray is enabled the program goes to system tray on close.

If tray support is implemented you may add a couple of tray commands, right click on tray icon:

• Show;
• Exit:

If you don't find this feature request useful enough feel free to discard it, I use many programs and my task bar becomes easily cluttered so I prefer to send the programs which are not immediately needed to system tray. My preferred settings would be to minimize the program to task bar and to close it to system tray ( Minimize to tray not checked, Close to tray checked).

When "Word Wrap" option is disabled, "Right-to-left reading" option work incorrect.

Hello, !
I can not access my notes after Windows Ver Change.

Old (setup)
Synology NAS stores Note Files
DesktopPC HDD Win7 64Bit with on
Hardware Raid10 NFTS files system
Win7-64 Bit

New (setup)
Synology NAS stores Note Files (files not moved or changed at all)
Desktop PC HDD Win 2008R2 (as Desktop OS not as server)
Same Hardware Raid Raid10 NFTS File system.

My Computer crashed and burned and i need to replace 1 of my drive in Desktop PC
I replaced and rebuilt Raid and added a 500G SSD boot Drive. and rebuilt the 25Tb of RAID.
I install different version of windows. 2008R2 64Bit.
Just to be safe I installed all of my applications over again one by one.
Crypto note being one of them...

Problem Today
Crypto can not access any of my notes ( NONE ). It just kicks it back as Bad Key.
to double check myself and Keys (i am getting old)
I opened a VMware previous snapshot of my Win7 system and connected to the NAS.
The Snapshot could open the old Cnotes
The New OS still can not.

I was lucky that I had a snapshot. Or I would have been hosed. with 1500+ of these single page txt files. (Client Records.) Non-Profit Law Office

• Change interface of Settings window (because of too many settings).
• Rework the logic of applying app settings. For now after pressing Save button, settings applying without checking if any settings was really changed.

Move project to ScintillaNET.
Causes:

• Better performance on big files. Will help with this issue.
• Built in line numbers.
• Feature-rich.

Hello,

First, I would like to thank you for maintaining and improving Crypto Notepad, I appreciate your work.

There is just one, cosmetic, insignificant thing (introduced in version 1.4.0) that I do not like- from Release-Notes:

New icons (http://p.yusukekamiyamane.com/)

I prefer the old tool bar icons (till version 1.3.0), screen:

to the new tool bar icons (from version 1.4.0), screen:

Would it be too much of a trouble to provide an option to use the old tool bar icons?

Regards

Save in settings Custom colours values, from color picker.

Describe the bug
After opening the file, if you try to open another file, but do not enter the correct password, and then press the cancel button, you will no longer be able to change the file password, or save the file.

Steps to Reproduce

1. Open some file
2. Try to open another file, but type wrong password
3. After showing the "Invalid key" message press the cancel button

Now menu item Change Key is inactive. After trying to press Save button appears error.

Video

Software version:

• OS version [Windows 10]
• App version [v1.2.0]

Describe the solution you'd like
Remember value of the Right-to-Left setting.

Describe the solution you'd like
Disable whole word selection with mouse in editor.

Additional context

Describe the bug
Scrolling down in editor using mouse wheel doesn't work on Windows 7

Software version:

• OS version [Windows 7]
• App version [v1.5.0]

Additional context
Bug in this line of code

Auto lock the application based on time

In the setting add a "lock timeout". When the editor is out of focus longer than the time put in the setting, the application gets locked and needs the password or a pin to unlock again.

Describe the bug
Text glitches in editor after file save

Video

Software version (please complete the following information):

• OS version [Windows 10]
• App version [v1.5.0]

When creating a new file, file name is: Unnamed.cnp, even if manually set different file name while saving.

Software version:

• OS version [any]
• App version [v1.6.2]

After upppdatimg from v.: 1.5, I get this message (Win 10 v.:1909):
"
[Window Title]
c:\Utilities\Crypto Notepad.exe
[Content]
c:\Utilities\Crypto Notepad.exe
Operation did not complete successfully because the file contains a virus or potentially unwanted software.
[OK]
"
and the program didn´t work!
What is the problem?
b rgds