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91 lines
3.2 KiB
Markdown
91 lines
3.2 KiB
Markdown
<!-- Copyright (C) 2012-2021 jrnl contributors
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License: https://www.gnu.org/licenses/gpl-3.0.html -->
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# Privacy and Security
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`jrnl` is designed with privacy and security in mind, but like any other
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program there are some limitations to be aware of.
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## Password strength
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`jrnl` doesn't enforce password strength requirements. Short or commonly-used
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passwords can be easily circumvented by someone with basic security skills
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to access to your encrypted `jrnl` file.
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## Shell history
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Since you can enter entries from the command line, any tool that logs command
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line actions is a potential security risk. See below for how to deal with this
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problem in various shells.
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### bash
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You can disable history logging for jrnl by adding this line into your
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`~/.bashrc` file:
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``` sh
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HISTIGNORE="$HISTIGNORE:jrnl *"
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```
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To delete existing `jrnl` commands from `bash` history, simply delete them from
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your bash history file. The default location of this file is `~/.bash_history`,
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but you can run `echo "$HISTFILE"` to find it if needed. Also, you can run
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`history -c` to delete all commands from your history.
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### zsh
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You can disable history logging for jrnl by adding this to your `~/.zshrc`
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file:
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``` sh
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setopt HIST_IGNORE_SPACE
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alias jrnl=" jrnl"
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```
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To delete existing `jrnl` commands from `zsh` history, simply remove them from
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your zsh history file. The default location of this file is `~/.zsh_history`,
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but you can run `echo "$HISTFILE"` to find it if needed. Also, you can run
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`history -c` to delete all commands from your history.
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### fish
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By default `fish` will not log any command that starts with a space. If you
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want to always run jrnl with a space before it, then you can add this to your
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`~/.config/fish/config.fish` file:
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``` sh
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abbr --add jrnl " jrnl"
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```
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To delete existing jrnl commands from `fish` history, run `history delete --prefix 'jrnl '`.
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### Windows Command Prompt
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Windows doesn't log history to disk, but it does keep it in your command prompt
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session. Close the command prompt or press `Alt`+`F7` to clear your history
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after journaling.
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## Files in transit from editor to jrnl
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When creating or editing an entry, `jrnl` uses a unencrypted temporary file on
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disk in order to give your editor access to your journal. After you close your
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editor, `jrnl` then deletes this temporary file.
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So, if you have saved a journal entry but haven't closed your editor yet, the
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unencrypted temporary remains on your disk. If your computer were to shut off
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during this time, or the `jrnl` process were killed unexpectedly, then the
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unencrypted temporary file will remain on your disk. You can mitigate this
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issue by only saving with your editor right before closing it. You can also
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manually delete these files (i.e. files named `jrnl_*.txt`) from your temporary
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folder.
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## Plausible deniability
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You may be able to hide the contents of your journal behind a layer of encryption,
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but if someone has access to your configuration file, then they can figure out that
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you have a journal, where that journal file is, and when you last edited it.
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With a sufficient power imbalance, someone may be able to force you to unencrypt
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it through non-technical means.
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## Notice any other risks?
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Please let the maintainers know by [filing an issue on GitHub](https://github.com/jrnl-org/jrnl/issues).
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