show-photos off by defaulf, causes problem?

2006-07-11 Thread Jørgen Lysdal
Recently, a friend had a problem with a key in his keyring that appeared
to be valid. However he could not find any link between that key and his
only ultimately trusted key. He removed all signatures from that key,
but it still appeared to be valid. After importing the key into PGP i
noticed that there was a photo uid that had the link between the
keys that he could not find.

Okay, maybe i missed something here, but could the problem be that
show-photos was turned off?

are there any good reasons this is turned off by default?

---

show-photos
Causes   --list-keys,  --list-sigs,  --list-public-
keys, and --list-secret-keys to display  any  photo
IDs attached to the key.  Defaults to no.  See also
--photo-viewer.

-

Jorgen Christiansen Lysdal
j.lysdal(at)gmail.com
0x01331B97 / 0x972BF22A

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Re: show-photos off by defaulf, causes problem?

2006-07-11 Thread David Shaw
On Tue, Jul 11, 2006 at 01:09:15PM +0200, Jørgen Lysdal wrote:
 Recently, a friend had a problem with a key in his keyring that appeared
 to be valid. However he could not find any link between that key and his
 only ultimately trusted key. He removed all signatures from that key,
 but it still appeared to be valid. After importing the key into PGP i
 noticed that there was a photo uid that had the link between the
 keys that he could not find.
 
 Okay, maybe i missed something here, but could the problem be that
 show-photos was turned off?

I'm not sure.  What was the problem here?

David

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Re: show-photos off by defaulf, causes problem?

2006-07-11 Thread Jørgen Lysdal
David Shaw wrote:
 
 I'm not sure.  What was the problem here?
 
 David

okay, made a mistake here... There is no problem.
sry for wasting your time...
(im hitting myself with the stupidity stick)

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Re: Keysigning challenge policies/procedures

2006-07-11 Thread Todd Zullinger
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Atom Smasher wrote:
 pgp Key Signing Observations: Overlooked Social and Technical
 Considerations
 http://www.linuxsecurity.com/content/view/121645/49/
 
 there's a few sections in that article that might be of interest.

Indeed, thank you Atom!  I'll pass this link along for more
information after my short talk.

- -- 
ToddOpenPGP - KeyID: 0xD654075A | URL: www.pobox.com/~tmz/pgp
==
Politicians are the same all over. They promise to build bridges even
when there are no rivers.
-- Nikita Khrushchev

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Comment: When crypto is outlawed bayl bhgynjf jvyy unir cevinpl.

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ei5hc2MACgkQuv+09NZUB1ritwCeL/ePib2q8dHR4C97Y123fmAHj7cAn2O5jfDf
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Card readers supported by GPG's internal drivers

2006-07-11 Thread Tony Whitmore
Hi all,

I've been playing around with an OpenGPG smartcard and card reader for
the last few days, and have a few questions.

Is there a compatibility list of drivers supported by GPG's internal
card reader driver, other than the relevant part of the HOWTO? Do
readers have to support a certain standard to be supported by GPG
directly, or is support for each reader implemented individually?

I have an ACS ACR30U reader[1] and have followed the HOWTOs instructions
on setting up with udev. However, it doesn't seem to work with GPG directly:

$ gpg --card-status
gpg: pcsc_establish_context failed: no service (0x8010001d)
gpg: card reader not available
gpg: OpenPGP card not available: general error

The reader does support PC/SC though, so I plan to try using PC/SC to
access the card.

BTW, the link to the gnupg-ccid file (NOT gnupg-ccid.rules) on the HOWTO
links back to the HOWTO, not the file:

http://www.gnupg.org/(en)/howtos/card-howto/en/smartcard-howto-single.html#id2501406

Thanks in advance for any help,

Tony Whitmore

[1]
http://www.acs.com.hk/Product_Readers.asp?productID=53PCate=Products_PC_Linked_SmartCard_Readers



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Re: Card readers supported by GPG's internal drivers

2006-07-11 Thread Tony Whitmore
Matthias Kirschner wrote:
 * Tony Whitmore [EMAIL PROTECTED] [2006-07-11 19:16:02 +0100]:
 
 $ gpg --card-status
 gpg: pcsc_establish_context failed: no service (0x8010001d)
 gpg: card reader not available
 gpg: OpenPGP card not available: general error
 
 Sorry, wrong link in my last e-mail. Please try this:
 http://lists.gnupg.org/pipermail/gnupg-devel/2006-July/023000.html

Thanks Matze. I've removed the udev rules/script I had previously setup
as per the HOWTO and substituted the rules you gave. I've symlinked them
into /etc/udev/rules.d too and restarted udev, but get the same result.
I'm running Ubuntu Dapper. Am I right in thinking the entries in
/proc/bus/usb/XXX/XXX should be modified to match the rules (i.e. group
scard, mode 644)? Because they don't seem to be:

# ls -l /proc/bus/usb/002/021
-rw-r--r-- 1 root root 43 2006-07-11 21:58 /proc/bus/usb/002/021

I get the same failure as reported before even if I manually change the
group and permissions on the device node. And yes, my user is in the
scard group. :)

FWIW, lsusb for the device reports:

Bus 002 Device 021: ID 072f:0001 Advanced Card Systems, Ltd AC1030-based
SmartCard Reader

What can I try next?

Thanks,

Tony



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How do I check if a file is a valid encrypted file before I decrypt it?

2006-07-11 Thread Todd Patrick
Version:

gpg (GnuPG) 1.2.6
Copyright (C) 2004 Free Software Foundation, Inc.
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions. See the file COPYING for details.

Home: ~/.gnupg
Supported algorithms:
Pubkey: RSA, RSA-E, RSA-S, ELG-E, DSA, ELG
Cipher: 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH
Hash: MD5, SHA1, RIPEMD160, SHA256
Compression: Uncompressed, ZIP, ZLIB


Summary:

How do I check if a file is a valid encrypted file before I decrypt it?


Issue:

Before I decrypt a file, this file does have a .pgp extension, how do I
know if it is a valid encrypted file before I decrypt it?

Looking at the man pages, there is a --verify argument, but that deals
with the sigfile and not an encrypted file.

Basically, I'd like to check the file to make sure it was encrypted
properly before I attempt to decrypt it.

Suggestions, examples or thoughts are greatly appreciated.

Thanks,

--Todd

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Re: How do I check if a file is a valid encrypted file before I decrypt it?

2006-07-11 Thread Robert J. Hansen
 Before I decrypt a file, this file does have a .pgp extension, how do I
 know if it is a valid encrypted file before I decrypt it?

I'm not sure what you're asking here, to be honest.  What's an invalid
encrypted file?  If I send you an encrypted file containing nothing but
random data, the successful decryption of the valid file will be
statistically indistinguishable from trying to decrypt it with an
incorrect session key.

And in some other respects, the OpenPGP standard makes it very easy for
an implementation to detect bad or corrupted data and to bail out early.

So without knowing precisely what you mean by 'validity', I don't know
what to tell you, I'm sorry.



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