Android text editor with file-by-file encryption

[HippoMan]

I'm seeking an Android app which I have not been able to find, and which may not even exist.

I'm looking for an Android text editor app which optionally can encrypt and decrypt files via AES or at least some well-known encryption algorithm. I want this optional encryption to be performed on a file-by-file basis, and not via some sort of encrypted storage such as encfs or TrueCrypt. I also want this to be done locally on my device, without anything being stored anywhere in the cloud.

In other words, I want to be able to open a non-encrypted file on my Android device and edit its contents via a text editor, and then save either an encrypted or decrypted version of the same file on my device. And I want to be able to open a file that was encrypted in this manner using the same app, and have it be editable in plain text, with it being saved on disk in either encrypted or decrypted format, depending on my choice.

I want the data to be stored in individual files, not sqlite database entries like most Android notepad applications utilize.

I know I can encrypt/decrypt files using various Android apps, but I do not want to use a separate app to perform this encryption/decryption before and efter editing the message in the text editor. I want all of this to be handled via a single step within the text editor or a plugin which might be available for such a text editor ...

... or if an Android file manager exists which can perform this encryption/decryption functionality behind the scenes when a file is selected for editing, that will be acceptable, as well.

I have searched extensively for such an app, and I have not come up with anything, so I am not optimistic that I can find something like this. But I thought I'd ask here, just in case someone might know of some software which can do what I want.

Thank you in advance.

 

[Rukbat]

1. Android Apps is for developers to advertise their apps. I moved your question to Ask a Question, where it will get better exposure.

2. Text editing and encryption are two totally different ideas. I don't know of any text editor, Android or not, that saves files in any encryption. (I may be wrong, but in over 40 years I've never run into one.)

 

[ManiacJoe]

As you have guessed, normally that level of encryption would be done at the file system level with the apps knowing nothing about it.

To do it all in an app, you probably need an editor that uses plug-ins, then need to find an encryption plug-in that works in that app. Unfortunately, I know of no such editor nor of any plug-ins, mostly due to never having looked for them.

 

[HippoMan]

1. Android Apps is for developers to advertise their apps. I moved your question to Ask a Question, where it will get better exposure.

2. Text editing and encryption are two totally different ideas. I don't know of any text editor, Android or not, that saves files in any encryption. (I may be wrong, but in over 40 years I've never run into one.)

Thank you. Well, I use emacs under linux, MacOs, and Windows, and it's a simple process to configure it to decrypt/encrypt files based upon their name, or their suffix, or the directories they reside in, etc. Actually, this is fairly simple to do in vim, as well. I was hoping for something like that in an Android text editor. Oh well ...

And thank you for moving this question to the proper location!

 

[HippoMan]

As you have guessed, normally that level of encryption would be done at the file system level with the apps knowing nothing about it.

To do it all in an app, you probably need an editor that uses plug-ins, then need to find an encryption plug-in that works in that app. Unfortunately, I know of no such editor nor of any plug-ins, mostly due to never having looked for them.

Thank you. I'm looking for plugin-enabled editors and file managers. Total Commander and Solid Explorer both allow plugins, but as yet I haven't found instructions for writing such plugins in either piece of software. But I'm still looking. If I can find a way to do this, I'll write the encryption/decryption plugin myself.

 

[ManiacJoe]

Take a look at this editor:
https://play.google.com/store/apps/details?id=jp.sblo.pandora.jota.plus

It seems to use plug-ins for some of its features. You will probably need to contact the developer to see what APIs are available for the plug-ins, assuming they want to cooperate.

 

[HippoMan]

Take a look at this editor:
https://play.google.com/store/apps/details?id=jp.sblo.pandora.jota.plus

It seems to use plug-ins for some of its features. You will probably need to contact the developer to see what APIs are available for the plug-ins, assuming they want to cooperate.

Thank you. I actually use this editor.

I now see that it utilizes plugins for capabilities such as root access and connectors to Dropbox, Google Drive, etc. However, there are no docs for any plugin API, so I will try to contact the developer.