Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread Michael Anders

 Any way for two correspondents to set up gnupg within a few moments
 without having to become expert?
 
 The usual gnupg materials are very dense.

Ask an expert to do the setup. After that usage is simple.



In my opinion public license software is about empowering people.
If you need an expert to install a software for you, the dependency on
a software vendor is replaced by the dependency on an expert, which
might be even worse in some circumstances.
Experts should also see their role in empowering people.
Yes, there is a necessity to have good GUI based installers that don't
need an experts assistance to get things right (and eventually change
the insecure gpg defaults for that matter...)
gpg4win works just fine.(So does Truecrypt or Academic Signature if you
look at other crypto)

The users must invest some minutes in understanding what asymmetric
cryptography is about, however. That should be well within the scope of
people with normal intelligence.
Without that very basic understanding, using GnuPG(or other public key
crypto) would be reckless nonsense anyways. Becoming a console wizard
should definitely not be necessary. 

Regards
   Michael Anders 




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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread Peter Lebbing
On 21/01/14 10:45, Michael Anders wrote:
 Yes, there is a necessity to have good GUI based installers that don't
 need an experts assistance to get things right (and eventually change
 the insecure gpg defaults for that matter...)

You mean what you personally consider insecure defaults. Please let's not
confuse people by stating opinions as facts. You're entitled to your opinion,
though.

HTH,

Peter.

-- 
I use the GNU Privacy Guard (GnuPG) in combination with Enigmail.
You can send me encrypted mail if you want some privacy.
My key is available at http://digitalbrains.com/2012/openpgp-key-peter

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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread Michael Anders

 You mean what you personally consider insecure defaults. Please let's not
 confuse people by stating opinions as facts. You're entitled to your opinion,
 though.
 
 HTH,
 
 Peter.
 

My opinion is that SHA1 should no longer be used.

A link on SHA1 security:

https://www.schneier.com/blog/archives/2005/02/cryptanalysis_o.html

regards,
   Michael Anders


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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread Steve Jones
On Tue, 21 Jan 2014 14:03:07 +0100
Michael Anders micha...@gmx.de wrote:

 My opinion is that SHA1 should no longer be used.
 
 A link on SHA1 security:
 
 https://www.schneier.com/blog/archives/2005/02/cryptanalysis_o.html 

How do I prevent gnupg from using SHA1? Also how do I update my key to not use 
SHA1 digests which it appears to be using, as well as listing SHA1 as my second 
favourite algorithm.

-- 
Steve Jones st...@secretvolcanobase.org
Key fingerprint: 3550 BFC8 D7BA 4286 0FBC  4272 2AC8 A680 7167 C896


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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread Michael Anders
On Tue, 2014-01-21 at 14:19 +, Steve Jones wrote:

 How do I prevent gnupg from using SHA1? Also how do I update my key to not 
 use SHA1 digests which it appears to be using, as well as listing SHA1 as my 
 second favourite algorithm.
 
I found a description in the
web( 
http://sparkslinux.wordpress.com/2013/02/21/hashing-algorithm-is-your-gpg-configuration-secure/)
 that told me to do the following:

You locate the file gpg.conf 
On my ubuntu it is in the directory ~/.gnupg/
In this file you can add the three lines at the bottom

personal-cipher-preferences AES256 TWOFISH AES192 AES
personal-digest-preferences SHA512 SHA384 SHA256
personal-compress-preferences ZLIB BZIP2 ZIP

to set the preferences. GnuPG is supposed to pick the leftmost possible
in the respective lists.
But backup before editing! I remember some recent posts on problems
editing GnuPG config files and tranferring to and fro windows and linux.
There seems to be a danger to mess up things using wrong editor
settings.


I don't know if hash preference information is additionally attached to
keys. I would guess it is not, it wouldn't make sense to me.

regards,
   Michael Anders 


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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread Hauke Laging
Am Di 21.01.2014, 16:06:36 schrieb Michael Anders:

 I don't know if hash preference information is additionally attached
 to keys. I would guess it is not, it wouldn't make sense to me.

Unfortunately that's not a reliable guide.

http://www.gnupg.org/documentation/manuals/gnupg-devel/GPG-Esoteric-Options.html

--default-preference-list


Hauke
-- 
Crypto für alle: http://www.openpgp-schulungen.de/fuer/unterstuetzer/
http://userbase.kde.org/Concepts/OpenPGP_Help_Spread
OpenPGP: 7D82 FB9F D25A 2CE4 5241 6C37 BF4B 8EEF 1A57 1DF5


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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread Pete Stephenson
On Jan 21, 2014 5:32 PM, Hauke Laging mailinglis...@hauke-laging.de
wrote:

 Am Di 21.01.2014, 16:06:36 schrieb Michael Anders:

  I don't know if hash preference information is additionally attached
  to keys. I would guess it is not, it wouldn't make sense to me.

 Unfortunately that's not a reliable guide.


http://www.gnupg.org/documentation/manuals/gnupg-devel/GPG-Esoteric-Options.html

 --default-preference-list

I've found http://www.debian-administration.org/users/dkg/weblog/48 to be a
reasonably sensible guide for setting stronger preferences. I also added
Twofish and Blowfish after AES256 and AES, respectively.

I've not heard of any issues with that setup, but your mileage may vary.
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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread Steve Jones
On Tue, 21 Jan 2014 17:39:13 +0100
Pete Stephenson p...@heypete.com wrote:

 I've found http://www.debian-administration.org/users/dkg/weblog/48 to be a
 reasonably sensible guide for setting stronger preferences. I also added
 Twofish and Blowfish after AES256 and AES, respectively.
 
 I've not heard of any issues with that setup, but your mileage may vary.

Thanks, that was quite helpful. I've found I can just delete the self 
signatures on my UID and replace them with better ones but I can't see a way to 
change the subkey binding signature.

-- 
Steve Jones st...@secretvolcanobase.org
Key fingerprint: 3550 BFC8 D7BA 4286 0FBC  4272 2AC8 A680 7167 C896


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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-21 Thread arne renkema-padmos
On 21/01/14 14:03, Michael Anders wrote:
 
 You mean what you personally consider insecure defaults. Please let's not
 confuse people by stating opinions as facts. You're entitled to your opinion,
 though.

 HTH,

 Peter.

 
 My opinion is that SHA1 should no longer be used.

Of course in the best of worlds it shouldn't be used anymore. But if
everyone started signing their emails with SHA1 I couldn't be more
pleased, because then you at least have the infrastructure in place, and
can upgrade people later. The major problem we're facing is that we
can't even get most people to use MD5 or DES. Heck, they don't even know
who or what they are, and to be frank they shouldn't have to.

Cheers,
arne


-- 
Arne Renkema-Padmos
@hcisec, secuso.org
Doctoral researcher
CASED, TU Darmstadt

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Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-16 Thread Don Warner Saklad
Any way for two correspondents to set up gnupg within a few moments
without having to become expert?

The usual gnupg materials are very dense.

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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-16 Thread Hauke Laging
Am Do 16.01.2014, 05:34:34 schrieb Don Warner Saklad:
 Any way for two correspondents to set up gnupg within a few moments
 without having to become expert?
 
 The usual gnupg materials are very dense.

Ask an expert to do the setup. After that usage is simple.


Hauke
-- 
Crypto für alle: http://www.openpgp-schulungen.de/fuer/unterstuetzer/
http://userbase.kde.org/Concepts/OpenPGP_Help_Spread
OpenPGP: 7D82 FB9F D25A 2CE4 5241 6C37 BF4B 8EEF 1A57 1DF5


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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-16 Thread fa-ml
On Thu, Jan 16, 2014 at 05:34:34AM -0500, Don Warner Saklad wrote:
 Any way for two correspondents to set up gnupg within a few moments
 without having to become expert?

 The usual gnupg materials are very dense.



The most complex part is generating and sharing your public keys, which
can be as easy as:

gpg --gen-key
gpg --send-key your-key-id
gpg --search-key name-or-mail-of-your-friend
gpg --fingerprint name-or-mail-of-your-friend

After checking (on the phone or on some other channel) that the fingerprint
matches, you can type

gpg -e file

to encrypt a file. The commands are for the most part interactive, hence easy
to follow).

Mail client integration becomes a must if you need to exchange more than
a few messages. I use mutt, but there are many other setups (Thunderbird 
Enigmail, claws-mail, etc.) that are PGP friendly.



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Re: Any way for two correspondents to set up gnupg within a few moments without having to become expert?

2014-01-16 Thread Ryan Sawhill Aroha
Yes. Decide a shared passphrase via a secure channel and just use gpg -c.
On Jan 16, 2014 6:24 AM, Don Warner Saklad dsak...@gnu.org wrote:

 Any way for two correspondents to set up gnupg within a few moments
 without having to become expert?

 The usual gnupg materials are very dense.

 ___
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 Gnupg-users@gnupg.org
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