Automatically encrypt on save, decrypt on open?

Automatically encrypt on save, decrypt on open?

[Peter Davis]

I'd like to store information in an org page that gets automatically encrypted when I save it, and decrypted when I open it. Is
there some built-in functionality or hooks for this?

Thank you,
-pd

Re: Automatically encrypt on save, decrypt on open?

[John Kitchin]

see org-crypt http://orgmode.org/worg/org-tutorials/encrypting-files.html

Here is the setup I have that worked when I tried it last ;)

;; encryption
(require 'epa-file)
(unless (memq epa-file-handler file-name-handler-alist)
  (epa-file-enable))

(require 'org-crypt)
(org-crypt-use-before-save-magic)
(setq org-tags-exclude-from-inheritance (quote ("crypt")))
;; GPG key to use for encryption
;; Either the Key ID or set to nil to use symmetric encryption.
(setq org-crypt-key "some-key")



Peter Davis writes:

> I'd like to store information in an org page that gets automatically encrypted when I save it, and decrypted when I open it. Is
> there some built-in functionality or hooks for this?
>
> Thank you,
> -pd

--
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu

Re: Automatically encrypt on save, decrypt on open?

[Peter Davis]

Thanks, John! I'll give it a try.

-pd

John Kitchin <jkitchin@andrew.cmu.edu> writes:

> see org-crypt http://orgmode.org/worg/org-tutorials/encrypting-files.html
>
> Here is the setup I have that worked when I tried it last ;)
>
> ;; encryption
> (require 'epa-file)
> (unless (memq epa-file-handler file-name-handler-alist)
>   (epa-file-enable))
>
> (require 'org-crypt)
> (org-crypt-use-before-save-magic)
> (setq org-tags-exclude-from-inheritance (quote ("crypt")))
> ;; GPG key to use for encryption
> ;; Either the Key ID or set to nil to use symmetric encryption.
> (setq org-crypt-key "some-key")
>
>
>
> Peter Davis writes:
>
>> I'd like to store information in an org page that gets automatically encrypted when I save it, and decrypted when I open it. Is
>> there some built-in functionality or hooks for this?
>>
>> Thank you,
>> -pd
>
> --
> Professor John Kitchin
> Doherty Hall A207F
> Department of Chemical Engineering
> Carnegie Mellon University
> Pittsburgh, PA 15213
> 412-268-7803
> @johnkitchin
> http://kitchingroup.cheme.cmu.edu

Re: Automatically encrypt on save, decrypt on open?

[Sebastien Vauban]

Hello John,

> Here is the setup I have that worked when I tried it last ;)
>
> ;; encryption
> (require 'epa-file)
> (unless (memq epa-file-handler file-name-handler-alist)
>   (epa-file-enable))

Do you remember what are those 2 lines for?

Best regards,
  Seb

-- 
Sebastien Vauban

Re: Automatically encrypt on save, decrypt on open?

[John Kitchin]

[-- Attachment #1: Type: text/plain, Size: 1157 bytes --]

They are basically copied from thetop of
http://orgmode.org/worg/org-tutorials/encrypting-files.html

The first line loads epa-file (epa-file.el --- the EasyPG Assistant,
transparent file encryption )

The second line looks like a way to call epa-file-enable if it hasn't been
enabled. You can just call epa-file-enable, and it does the check too, but
this probably avoids a minibuffer message when it is already loaded. I
think this function provides a handler for files ending in .gpg which need
to be en/decrypted by gpg.

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu


On Fri, Aug 14, 2015 at 4:01 AM, Sebastien Vauban <sva-news@mygooglest.com>
wrote:

> Hello John,
>
> > Here is the setup I have that worked when I tried it last ;)
> >
> > ;; encryption
> > (require 'epa-file)
> > (unless (memq epa-file-handler file-name-handler-alist)
> >   (epa-file-enable))
>
> Do you remember what are those 2 lines for?
>
> Best regards,
>   Seb
>
> --
> Sebastien Vauban
>
>
>

[-- Attachment #2: Type: text/html, Size: 1979 bytes --]

Re: Automatically encrypt on save, decrypt on open?

[Sebastien Vauban]

Hello John,

>> > Here is the setup I have that worked when I tried it last ;)
>> >
>> > ;; encryption
>> > (require 'epa-file)
>> > (unless (memq epa-file-handler file-name-handler-alist)
>> >   (epa-file-enable))
>>
>> Do you remember what are those 2 lines for?
>
> They are basically copied from thetop of
> http://orgmode.org/worg/org-tutorials/encrypting-files.html
>
> The first line loads epa-file (epa-file.el --- the EasyPG Assistant,
> transparent file encryption )
>
> The second line looks like a way to call epa-file-enable if it hasn't been
> enabled. You can just call epa-file-enable, and it does the check too, but
> this probably avoids a minibuffer message when it is already loaded. I
> think this function provides a handler for files ending in .gpg which need
> to be en/decrypted by gpg.

It simply because it Just Works (TM) with those 3 lines which I have in
my .emacs file:

--8<---------------cut here---------------start------------->8---
  ;; EasyPG Assistant
  (with-eval-after-load "epa-file"
    (setq epa-file-encrypt-to "john-Ch9RrZxMC0c@public.gmane.org")
    (setq epa-file-cache-passphrase-for-symmetric-encryption t))
--8<---------------cut here---------------end--------------->8---

Best regards,
  Seb

--
Sebastien Vauban

Re: Automatically encrypt on save, decrypt on open?

[Michael Strey]

On Do, 2015-08-13 at 16:28, Peter Davis wrote:
> I'd like to store information in an org page that gets automatically
> encrypted when I save it, and decrypted when I open it. Is there some
> built-in functionality or hooks for this?

Check org-crypt.el (http://orgmode.org/manual/org_002dcrypt_002eel.html)

-- 
Michael Strey
http://www.strey.biz * https://twitter.com/michaelstrey

Re: Automatically encrypt on save, decrypt on open?

[Eric S Fraga]

On Thursday, 13 Aug 2015 at 10:28, Peter Davis wrote:
> I'd like to store information in an org page that gets automatically
> encrypted when I save it, and decrypted when I open it. Is
> there some built-in functionality or hooks for this?

An alternative to using org's own encryption facility, as others have
suggested, is to encrypt the file as a whole and let emacs worry about
it.

If you create an encrypted file (say using gnupg on the command line)
with the following first line:

# -*- mode: org; epa-file-encrypt-to: ("your key name/email"); version-control: nil; -*-

then opening the file will start it up in org mode and will encrypt on
saving.

I prefer this in some cases although I do also use org's capabilities
for some sections in a file.
-- 
: Eric S Fraga (0xFFFCF67D), Emacs 25.0.50.2, Org release_8.3.1-34-gb911f1

Re: Automatically encrypt on save, decrypt on open?

[Peter Davis]

Thanks! This might be the best solution, since it's really just one file I want to encrypt/decrypt.

-pd


Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> On Thursday, 13 Aug 2015 at 10:28, Peter Davis wrote:
>> I'd like to store information in an org page that gets automatically
>> encrypted when I save it, and decrypted when I open it. Is
>> there some built-in functionality or hooks for this?
>
> An alternative to using org's own encryption facility, as others have
> suggested, is to encrypt the file as a whole and let emacs worry about
> it.
>
> If you create an encrypted file (say using gnupg on the command line)
> with the following first line:
>
> # -*- mode: org; epa-file-encrypt-to: ("your key name/email"); version-control: nil; -*-
>
> then opening the file will start it up in org mode and will encrypt on
> saving.
>
> I prefer this in some cases although I do also use org's capabilities
> for some sections in a file.

Re: Automatically encrypt on save, decrypt on open?

[Eric S Fraga]

On Thursday, 13 Aug 2015 at 11:47, Peter Davis wrote:
> Thanks! This might be the best solution, since it's really just one
> file I want to encrypt/decrypt.

If you want to encrypt all the contents of a file, this is indeed the
best approach, I think.  If you only want to encrypt a small part, then
org's crypt features are better.  The latter, however, become clumsy to
use when the whole file is to be encrypted.
-- 
: Eric S Fraga (0xFFFCF67D), Emacs 25.0.50.2, Org release_8.3.1-34-gb911f1

Re: Automatically encrypt on save, decrypt on open?

[Jorge A. Alfaro-Murillo]

Peter Davis writes:

> I'd like to store information in an org page that gets 
> automatically encrypted when I save it, and decrypted when I 
> open it. Is there some built-in functionality or hooks for this?

You could save the file as .gpg, and put as its first line

# -*- mode: org-mode -*-

By the way if you want to store passwords, take a look at 
org-passwords in /contrib

Best,
-- 
Jorge.

Re: Automatically encrypt on save, decrypt on open?

[Marcin Borkowski]

On 2015-08-14, at 19:54, Jorge A. Alfaro-Murillo <jorge.alfaro-murillo@yale.edu> wrote:

> Peter Davis writes:
>
>> I'd like to store information in an org page that gets 
>> automatically encrypted when I save it, and decrypted when I 
>> open it. Is there some built-in functionality or hooks for this?
>
> You could save the file as .gpg, and put as its first line
>
> # -*- mode: org-mode -*-

In my setup (and I didn't do anything special, just installed gpg from
Ubuntu repos), it is enough to name the file foo.org.gpg (of course,
I have this: (add-to-list 'auto-mode-alist '("\\.org\\'" . org-mode))).
 
> Best,

Hth,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University