Can IPAD or Android Tablets create Keys and use gnupg

mercuryrising at mercuryrising at
Thu Sep 13 01:35:05 CEST 2012

Hash: SHA1

An old post from last year said:

On Wed, Aug 29 at 12:42 AM (UTC), Landon Hurley <ljrhurley at> wrote:
 _____________________________________________ Gnupg-users mailing list Gnupg-users at

shavital at mac

Jan 23, 2011, 8:48 AM

Post #3 of 11 (10237 views) Permalink

Re: Gpg for iPhone or iPad Remove Highlighting [In reply to]

Benjamin Donnachie wrote the following on 1/23/11 7:08 AM: > There's oPenPG Lite available from the App Store but it doesn't work > with my private key! YMMV of course! > > Ben

oPenGP Lite (couldn't find any version without the 'Lite'). This version works one way, it decrypts only, doesn't encrypt. This is a PGP Corporation (owned by Symantec now) App, hence the upper case PGP in oPenGP.

I don't know whether there is, or will be, a Mobile GnuPG what will work under iPhone or iPad iOS.

I generated on my Mac a new key pair (default RSA/RSA 2048). I didn't want to use my "regular" key.

Exported the secret key to the Mac's Desktop.

Connected the iPhone via iTunes (hardwired USB)

Imported the secret key to the iPhone via iTunes and an App called 'Files' <>.

In 'Files' I could see the key block, select all/copy.

Back to oPenGP, Import clipboard, ascertained that the key is now in the keyring.

Back to 'Files', set an access locked code. Checked that it works. Deleted the secret key keyblock.

Sent myself a test message encrypted with the public key of the above keypair.

Downloaded the e-mail in iPhone, select all/copy.

Back to oPenGP, Import/Decrypt Clipboard, enter the passphrase.

It works.

I don't feel at ease having my secret key in my iPhone, but i can learn to live with it, if I really want to use this iPhone feature. I'm not sure I want to.


So ios can use PGP on iphones and ipads?

 What are the security issues?  How safe is the private key and pass phrase on these devices?


> APGW functions on android remarkabl
y well, with key servers and
> key
> generation features. The only thing missing that comes to mind
> is the
> WOT side. As long as this is between friends, that becomes
> relatively
> unnecessary. Also possible is to just import pre existing keys.
> Also of
> interest would be whether sufficient entropy exists on the
> device to
> actually generate a secure key, so caveat emptor, so to speak.
> Both
> elgamal and rsa keys of up to unspecified sizes can be
> generated, but
> the instructions within the app suggest 8192 at least; more
> than
> sufficient.  As noted in another reply, PGP/mime is not
> supported. That
> functionality may be an issue, but given all three of the
> replies that
> I've seen to your query (including mine) are inline, that
> shouldn't be a
> problem with day to day operations.
> Attachments do not have sigs produced for them when emailed, but
> you can
> manually encrypt them using the APG app before attaching them to
> an
> email. K-9 works well with that app. File compression and
> message
> compression are both supported, most if not all of the
> encryption and
> hashing algorithms commonly found in gnupg are incorporated, and
> the app
> even supports ASCII armoured docs. All in all, an excellent
> tool.
> Someone recently forked the APG app, around the same time I was
> looking
> at doing the same, since the project has been inactive for
> nearly two
> years. His name escapes me, but he also manages the ad-away app.
> Also,
> The Guardian Project is porting gnupg.
> All in all an excellent project, highly recommended.
> //landon
> -------- Original Message --------
> From: mercuryrising at
> Sent: Tue Aug 28 19:49:57 EDT 2012
> To: Mika Suomalainen <mkaysi at>,
> gnupg-users at
> Subject: Re: Can IPAD or Android Tablets create Keys and use
> gnupg
> Thank you both for replying to my question about IPODs and
> Androids.  It
> sounds like neither will work to be fully functional with gnupg
> or PGP
> then.  Perhaps I should get a small laptop computer.  I wonder
> if one of
> those small driveless computers and a USB storage device would
> work.  I
> need an inexpensive solution for a Europe.  Since
> Poland and
> the Ukraine are in the European Union there shouldn't be any
> problem
> using PGP for private communication among friends right? I have
> been
> using PGP since the  90's as a hobby and believe if privacy is
> not use
> it will be lost.  I used to chat with Julf at Anon penit fi back
> then to
> but not with PGP.
> Procopius
> On Tue, Aug 28 at 02:04 PM (UTC), Mika Suomalainen
> <mkaysi at> wrote:
> > 28.08.2012 07:48, mercuryrising at kirjoitti:
> > > Can IPAD or ANDROID TABLETS create gnupgp
> private/public
> > keys and
> > > use gnupg or is that still relegated to Windows/Vista,
> Mac
> > OSX and
> > > Linux on desktop and laptop/notebook computer
> platforms?
> > >
> >
> > There is APG (Android Privacy Guard) in Google Play Store,
> which
> > can
> > be used by e.g. K9 Mail, which can sign, decrypt and
> encrypt
> > messages.
> > I am not sure can it generate keys, by itself, but it
> accepts
> > keys
> > created in gnupg.
> >
> > More information at [APG home page] and [K9 Mail Google
> Code
> > page].
> >
> > [APG home page]:
> > [K9 Mail Google Code
> page]:
> >
> > --
> > Mika Suomalainen
Charset: UTF8
Version: Hush 3.0
Note: This signature can be verified at


More information about the Gnupg-users mailing list