Re: TPK Archival

2009-03-24 Thread David Shaw
On Tue, Mar 24, 2009 at 02:47:01PM +0100, Chris Hills wrote: > I am looking for a tool that to export a GPG private key to a Data > Matrix 2d barcode for long-term archival. I have been searching but have > yet to find any existing software to do this. I have looked at PaperKey > but it only

Re: TPK Archival

2009-03-24 Thread David Shaw
On Tue, Mar 24, 2009 at 05:55:15PM +0100, Chris Hills wrote: > On 24/03/09 17:47, Chris Hills wrote: >> Thanks David, that is exactly what I was looking for. For some reason >> after I compiled libdmtx 0.7 the PDF and SVG formats are not available, >> but I can manage with PNG. > > Scratch that; SV

Re: default symmetric algorithm used for private key

2009-04-01 Thread David Shaw
On Mar 29, 2009, at 3:37 PM, Chrys M wrote: Hello, I am trying to find out which is the default algorithm that GPG uses to encrypt my private key with the passphrase provided. Is there a command that I can use? It's CAST5, unless: a) You don't have CAST5 compiled in b) You run with --rfc2

Re: .gnupg/gpg.conf permissions

2009-04-06 Thread David Shaw
On Apr 6, 2009, at 6:25 PM, Robert Holtzman wrote: Just tried to d/l a key and was greeted with [hol...@localhost]~$ sudo gpg --recv --keyserver pgp.mit.edu A373FB480EC4FE05 [sudo] password for holtzm: gpg: WARNING: unsafe ownership on configuration file `/home/ holtzm/.gnupg/gpg.conf' gpg:

Re: Singing a key with a subkey

2009-04-07 Thread David Shaw
On Apr 7, 2009, at 10:54 AM, Brian Mearns wrote: I've exported a crippled version of my private keyset for use at work...I did not include the primary/master key in the export, only a signing subkey and an encryption subkey. Now I've imported them on a different system and want to sign a co-work

Re: Help Solicited to implement a new pgp key server

2009-04-08 Thread David Shaw
On Apr 8, 2009, at 5:36 AM, rahul kaushik wrote: I have been asked to support PGP for a application. the most likely scenario would be to implement a key server that would allow customers to manage their keys. This will of course come with some complications, in terms of interface, provi

Re: Upgrade from GnuPG 1.4.5 to 1.4.9 breaks signature verification in PGP

2009-04-14 Thread David Shaw
On Apr 14, 2009, at 9:10 PM, Ronald Cook wrote: Hi. I've been scouring the gnupg-users mail archives but haven't yet seen a solution to this. One of our clients recently upgraded their production installation of GnuPG 1.4.5 to version 1.4.9. They send encrypted / signed files to us almost dai

Re: Keyserver doesn't honour removed signatures

2009-04-15 Thread David Shaw
On Apr 15, 2009, at 8:35 AM, Chris Hills wrote: On 14/04/09 14:32, Werner Koch wrote: No. The Net never forgets. A keyservers will never remove signatures because signatures go into the key validation computation and thus removing signatures would change the validity of your key. Signatu

Re: Keyserver doesn't honour removed signatures

2009-04-15 Thread David Shaw
On Apr 15, 2009, at 1:16 PM, Werner Koch wrote: from whichever keyserver they like (or run their own keyserver and get content synced to them on a regular basis). An easy countermeasure would be to limit the size of the meta data (user IDs, attribute id, notations and so). Well, until p

Re: Keyserver doesn't honour removed signatures

2009-04-16 Thread David Shaw
On Apr 16, 2009, at 3:18 AM, Werner Koch wrote: On Wed, 15 Apr 2009 19:47, ds...@jabberwocky.com said: The difference is that the keyserver network allows anyone to submit data, and the keyserver net will then serve it on their behalf. It's Like Usenet. Not exactly. Usenet has delete :)

Re: OpenPGP digital signature query

2009-04-20 Thread David Shaw
On Apr 20, 2009, at 7:08 PM, Robert J. Hansen wrote: John Clizbe wrote: Your interests would be best served by a) hiring the services of a security consultant knowledgeable in the dealings of HIPAA specifically as it relates to the FDA; b) consulting an attorney knowledgeable in technology,

Re: Keyserver doesn't honour removed signatures

2009-04-20 Thread David Shaw
On Apr 16, 2009, at 1:12 PM, Robert J. Hansen wrote: Add it all together and USENET was at best a network-choking bandwidth hog, and at worst was a lawsuit waiting to happen. And thus, many full USENET feeds fell off the face of the net. It might be worth wondering whether the same could h

Re: OpenPGP digital signature query

2009-04-20 Thread David Shaw
On Apr 20, 2009, at 10:07 PM, Robert J. Hansen wrote: David Shaw wrote: That's a pretty big step there. "Is it true that you chose as a first source of information a mailing list where you did not know the people who were responding, nor their credentials, nor their professional

Re: Keyserver doesn't honour signature removal

2009-04-20 Thread David Shaw
On Apr 12, 2009, at 8:01 AM, John W. Moore III wrote: Listing Your Key at www.biglumber.com will allow You to display Your Key exactly as You desire it to appear and folks may be directed to retrieve it from there via a Comment line or a signature tagline. I am not aware of the ability to

Re: Keyserver doesn't honour signature removal

2009-04-20 Thread David Shaw
On Apr 13, 2009, at 5:23 AM, Sven Radde wrote: Hi! John Clizbe schrieb: You can remove any cruft you wish and distribute that key yourself. You just can't use the keyserver networks to do it. Also anyone who refreshes that key from a keyserver will pick up all the pieces you decided needed d

Re: OpenPGP digital signature query

2009-04-21 Thread David Shaw
On Apr 21, 2009, at 7:38 AM, Robert J. Hansen wrote: David Shaw wrote: "Sure. They told me some stuff, and I treated it as anecdote until I got confirmation from an attorney." The correct answer is "yes". On cross-examination you're not allowed to give exp

Re: Keyserver doesn't honour signature removal

2009-04-21 Thread David Shaw
On Apr 21, 2009, at 1:31 AM, Sven Radde wrote: Hi! David Shaw schrieb: With PKA, you can even get automatic key retrieval without a keyserver. That's not quite right. PKA records in DNS can point to a keyserver, but you still need the keyserver in the mix somewhere (though, like

Re: Keyserver doesn't honour signature removal

2009-04-21 Thread David Shaw
On Apr 21, 2009, at 1:44 AM, Faramir wrote: Sven Radde escribió: PKA is the way to get somebody to use my web server already for initial key retrieval (although this might not be the primary purpose of PKA) so that the (synchronizing merge-only) keyserver network is avoided. But if some

Re: Help with encrypting using my PGP Public key

2009-04-23 Thread David Shaw
On Apr 23, 2009, at 2:18 PM, Kumfer, Brian K wrote: While I appreciate the response, please note that I am unfamiliar with PGP and encryption, so this is my first attempt to work through an issue surrounding the problem. I never stated troubleshooting is a big burden. Rather, I did what

Re: DH/DSS vs ElGame/DSS?

2009-04-24 Thread David Shaw
On Apr 24, 2009, at 7:50 AM, Robert J. Hansen wrote: allen.schu...@gmail.com wrote: What is the difference between DH/DSS and ElGamel/DSS? I was reading up on S/MIME v3 and PGP/MIME differences when that came up. I don't know how it's used in the S/MIME standard. However, the Elgamal en

Re: DH/DSS vs ElGame/DSS?

2009-04-24 Thread David Shaw
On Apr 24, 2009, at 10:34 AM, Felipe Alvarez wrote: It's historical. Back in the late 1990s, the PGP developers were offered a free patent license if they called it Diffie-Hellman. Now that the patent has expired, though, it's a little hard to change their product without confusing a bunch of

Re: DH/DSS vs ElGame/DSS?

2009-04-24 Thread David Shaw
On Apr 24, 2009, at 12:29 PM, Robert J. Hansen wrote: David Shaw wrote: The patent holders (Cylink) simply wanted to push the name Diffie-Hellman for marketing reasons. Many people think Cylink has a history of regrettably close cooperation with the NSA. Some people consider their

Re: Help with encrypting using my PGP Public key

2009-04-24 Thread David Shaw
On Apr 24, 2009, at 12:40 PM, bkumfer wrote: Thanks for your help. To create the key, I followed the --gpg -gen-key command - used key length of 1024 bits. I examined this key and there is nothing particularly unusual about it. The only thing that jumps out (and this is a reach) is that

Re: Help with encrypting using my PGP Public key

2009-04-25 Thread David Shaw
On Apr 24, 2009, at 3:07 PM, David Shaw wrote: On Apr 24, 2009, at 12:40 PM, bkumfer wrote: Thanks for your help. To create the key, I followed the --gpg -gen-key command - used key length of 1024 bits. I examined this key and there is nothing particularly unusual about it. The only

Re: certificate chain depth

2009-04-25 Thread David Shaw
On Apr 25, 2009, at 6:18 PM, Raimar Sandner wrote: On Saturday 25 April 2009 22:00:05 John W. Moore III wrote: Raimar Sandner wrote: In the end it is of course a people thing whether you trust a key or not, no mathematical model ever can replace your final decision. So there is a big diffe

Re: certificate chain depth (technical)

2009-04-25 Thread David Shaw
On Apr 25, 2009, at 6:27 PM, Raimar Sandner wrote: On Saturday 25 April 2009 18:27:44 Raimar Sandner wrote: Hello, when gnupg trusts a key as a result of trustdb calculations, I would like to know what the chain depth for the given key is. [snip] As of now I can only think of gradually reduc

Re: certificate chain depth (technical)

2009-04-26 Thread David Shaw
On Apr 26, 2009, at 3:54 AM, Raimar Sandner wrote: On Sunday 26 April 2009 07:00:52 you wrote: On Apr 25, 2009, at 6:27 PM, Raimar Sandner wrote: On Saturday 25 April 2009 18:27:44 Raimar Sandner wrote: Hello, when gnupg trusts a key as a result of trustdb calculations, I would like to know

Re: Just a thought

2009-04-26 Thread David Shaw
On Apr 25, 2009, at 6:14 PM, John Clizbe wrote: Ingo Klöcker wrote: On Saturday 25 April 2009, John Clizbe wrote: The message will be encrypted once with a symmetric cipher and session key. Then the session key is encrypted to each recipient's public key and the encrypted session keys are att

Re: Just a thought

2009-04-27 Thread David Shaw
On Apr 27, 2009, at 7:04 AM, Harakiri wrote: I'm not sure if Enigmail has sufficient control here (due to the Thunderbird restrictions), but if possible, it might be wise to handle Bcc's recipients with --hidden-recipient instead of --recipient (i.e. "-r"). That would better duplicate the

Re: Subkeys...

2009-04-28 Thread David Shaw
On Apr 28, 2009, at 9:48 PM, Allen Schultz wrote: I made a key with default settings. Can I delte the encrypting subkey that has not expiration date and remake one with an expiration date? There are many answers to your question. Basically, yes, you could, but no, you almost certainly don't

Re: Looking for a good port80 static-DNS keyserver

2009-04-29 Thread David Shaw
On Apr 29, 2009, at 9:03 AM, Brian Mearns wrote: So I've been "advertising" keys.gnupg.net as the place to get my key for a while now, but the round-robin DNS is kind of bugging me. I understand the purpose of it, but it's kind of a crap shoot: not infrequently, the address maps to a server that

New results against SHA-1

2009-04-30 Thread David Shaw
http://eurocrypt2009rump.cr.yp.to/837a0a8086fa6ca714249409ddfae43d.pdf There is not much hard information yet, but the two big quotes are "SHA-1 collisions now 2^52" and "Practical collisions are within resources of a well funded organisation." David __

Re: Use other hash than SHA-1

2009-05-02 Thread David Shaw
On May 2, 2009, at 6:25 AM, Simon Ruderich wrote: I would like to use a different hash than SHA-1. I tried setting personal-digest-preferences SHA256 in my gpg.conf but it didn't work. What hash can I use with my key (default DSA/Elgamel key) and how? The short answer is that you can only use

Re: Use other hash than SHA-1

2009-05-02 Thread David Shaw
On May 2, 2009, at 10:47 AM, Raimar Sandner wrote: On Saturday 02 May 2009 15:45:11 David Shaw wrote: On May 2, 2009, at 6:25 AM, Simon Ruderich wrote: I would like to use a different hash than SHA-1. I tried setting personal-digest-preferences SHA256 in my gpg.conf but it didn't work.

Re: Use other hash than SHA-1

2009-05-02 Thread David Shaw
On May 2, 2009, at 3:46 PM, Allen Schultz wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Sat, May 2, 2009 at 7:45 AM, David Shaw wrote: The short answer is that you can only use a 160-bit hash with your default DSA key. That means SHA-1 or RIPEMD/160. There is a feature you can

Re: Use other hash than SHA-1

2009-05-03 Thread David Shaw
On May 3, 2009, at 8:17 AM, Simon Ruderich wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Sat, May 02, 2009 at 09:45:11AM -0400, David Shaw wrote: On May 2, 2009, at 6:25 AM, Simon Ruderich wrote: The short answer is that you can only use a 160-bit hash with your default DSA key

Re: New results against SHA-1

2009-05-04 Thread David Shaw
On May 4, 2009, at 6:16 AM, Nicholas Cole wrote: On Mon, May 4, 2009 at 9:24 AM, Werner Koch wrote: On Fri, 1 May 2009 05:58, a...@smasher.org said: so... when is the open-pgp spec moving beyond SHA1 hashes to identify public keys? what's next? will it have to be a bigger hash? OpenPGP

Re: Use other hash than SHA-1

2009-05-04 Thread David Shaw
On May 4, 2009, at 11:21 AM, Raimar Sandner wrote: On Monday 04 May 2009 04:56:24 David Shaw wrote: If you want a DSA2 key: gpg --enable-dsa2 --gen-key Select option 1, and enter 3072 for the DSA key size. If you want an RSA key: gpg --cert-digest-algo sha256 --gen-key Select

Re: Use other hash than SHA-1

2009-05-04 Thread David Shaw
On May 4, 2009, at 1:40 PM, Christoph Anton Mitterer wrote: On Sun, 2009-05-03 at 22:56 -0400, David Shaw wrote: It's important to remember that this isn't a completely SHA-1 free key, as that is not currently possible in the OpenPGP protocol, but it is possible to make a "us

Re: Use other hash than SHA-1

2009-05-05 Thread David Shaw
On May 5, 2009, at 5:21 PM, Christoph Anton Mitterer wrote: On Mon, 2009-05-04 at 23:46 -0400, David Shaw wrote: Re-issuing your self-sigs is more or less harmless. The keyservers never delete anything, so they'll end up with both the old and new. I'm not sure if this leads t

Re: Use other hash than SHA-1

2009-05-07 Thread David Shaw
On May 7, 2009, at 7:17 PM, Christoph Anton Mitterer wrote: On Tue, 2009-05-05 at 22:16 -0400, David Shaw wrote: I'm not sure if this leads to the same discussion that we had some time ago on the WG-list (about explicitly revoking previous self- sigs),... but if a key has self-sigs

Re: Use other hash than SHA-1

2009-05-08 Thread David Shaw
On May 8, 2009, at 3:26 AM, Raimar Sandner wrote: On Friday 08 May 2009 09:14:27 Raimar Sandner wrote: On Friday 08 May 2009 02:09:31 David Shaw wrote: One fear that I've seen talked about for SHA-1 is that an attacker can create a duplicate document such that if you signed document or

Re: gpg: WARNING: standard input reopened

2009-05-08 Thread David Shaw
On May 8, 2009, at 3:16 PM, Patrick Mabie wrote: Hello I was just wondering , can I fix this ? RPM version 4.4.2.3 gnupg-1.4.5-14.x86_64 CentOS 5.3 x86_64 kernel : 2.6.18-128.1.10.el5 rpmbuild -bb Documents/Rpm/Spec/q7z-64.spec --sign Generating signature: 1005 gpg: WARNING: standard inpu

Re: GPG Confirmation

2009-05-08 Thread David Shaw
On May 8, 2009, at 10:37 AM, jnhemley wrote: I was given a new key to use with our partner for encryption. Previously, the key was working fine. I removed all keys and then imported our key and then the partner's key. I set trust to ultimate. The encryption works but I now get a confirma

Re: Problems changing hash algo for clearsign

2009-05-10 Thread David Shaw
On May 10, 2009, at 8:52 AM, Tyler Spivey wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello. I'm trying to make any message I clearsign have a hash of SHA256. If the key you are trying to make a SHA256 signature with is the same one that you signed this message with, then you can't

Re: Problems changing hash algo for clearsign

2009-05-10 Thread David Shaw
On May 10, 2009, at 10:58 AM, Bob Henson wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Tyler Spivey wrote: and I can force it with --digest-algo sha256. Add just "digest-algo SHA256" (without the parentheses) to your gpg.conf file. Please do not do this. There is an entire

Re: Question regarding signature

2009-05-12 Thread David Shaw
On May 11, 2009, at 12:44 PM, Sanjeev Gupta wrote: All, I have 2 different vendors an dI would like to sign their keys using 2 different private keys. I don't want to share my public key between them. When ever I try to sign the key the software doesn't give me the option to select my

Re: Decryption streaming

2009-05-12 Thread David Shaw
On May 8, 2009, at 5:30 PM, Coffman, Beth C wrote: What is a good way to write a C++ app to decrypt multiple large PGP- encrypted files simultaneously into memory? I cannot have the plaintext output in a file on disk at any time. Preferably, one block of data from the file will be decrypte

Re: Photo's in keys?

2009-05-14 Thread David Shaw
On May 14, 2009, at 7:41 PM, Allen Schultz wrote: RE: including a photo uid, which is commonly stripped by public keyservers (http://fifthhorseman.net/key-transition-2007-06- 15.txt) Are there any limits on the photo in the keys, format/extension, size, etc? Will GPG resize if necessary? And th

Re: Photo's in keys?

2009-05-14 Thread David Shaw
On May 14, 2009, at 11:40 PM, Robert J. Hansen wrote: David Shaw wrote: The pic must be JPEG and the extension doesn't matter. GPG doesn't really care what the size is, but if it is over 6k, you'll get an "are you sure?" message, as it is kindness to the rest o

Re: There are actually two public keys?

2009-05-16 Thread David Shaw
On May 16, 2009, at 5:33 PM, Lucio Capuani wrote: Hello everybody and thank you for reading. I have a pretty good understanding of how asymmetric cryptography works in general. Nevertheless, the fact that GPG uses "two keys", I mean a main key and a subkey, confuses me. Are those "two keys"

Re: There are actually two public keys?

2009-05-16 Thread David Shaw
On May 16, 2009, at 9:14 PM, Lucio Capuani wrote: Can anyone explain why there is a difference between signing and encrypting keypairs, even for the same type (RSA)? As far as I've understood from the documentation, one of the reason should be that it would be good practice to keep the signing

Re: There are actually two public keys?

2009-05-18 Thread David Shaw
On May 18, 2009, at 5:49 PM, James P. Howard, II wrote: On Mon May 18 08:45:38 2009, R.A. Hettinga wrote: The reason for it is a notion of what's called "key hygiene," and that's an important concept in RSA usage. That is the notion that one should never sign with an encryption key, and never

Re: There are actually two public keys?

2009-05-19 Thread David Shaw
On May 19, 2009, at 1:46 PM, James P. Howard, II wrote: And on a divergent note, using the black magic described elsewhere[1], is it bad to convert a subkey into a primary key and use it to sign others? To do this, you have to have the key in primary key form in the (local) web of trust. I

Re: GNUPG 1.2.1 problem

2009-05-21 Thread David Shaw
On May 20, 2009, at 5:25 AM, Paweł Żuk wrote: I use gnupg 1.2.1 version For same cases during decrypting I receive: gpg: encrypted with 2048-bit RSA key, ID 453733BB, created 2006-02-13 "Comapny (User) " gpg: md_enable: algorithm 8 not available

Re: Changing the expiration date after the key has expired

2009-06-02 Thread David Shaw
On Jun 2, 2009, at 10:14 AM, Vincent Panel wrote: Hi, I just wondered if it was possible to postpone the expiration date after it has been set and/or after the deadline has been reached. Yes, you can. 2 years ago, I created a personal key and set the expiration to 2y, so it has now expired.

Re: backup all keys of DSA+ELG pair?

2009-06-05 Thread David Shaw
On Jun 5, 2009, at 2:00 AM, Kārlis Repsons wrote: Hi there, please, how can I make a keypair of DSA and ELG keys, 4 keys, as I understand, and then export all of them to another machine's gpg? Using --export, --export-secret-keys, --export-secret-subkeys, then --import for each of 3 previou

Re: backup all keys of DSA+ELG pair?

2009-06-05 Thread David Shaw
On Jun 5, 2009, at 10:02 AM, James P. Howard, II wrote: On Fri Jun 5 02:00:55 2009, Kārlis Repsons wrote: please, how can I make a keypair of DSA and ELG keys, 4 keys, as I understand, and then export all of them to another machine's gpg? Using --export, --export-secret-keys, --export-se

Re: backup all keys of DSA+ELG pair?

2009-06-05 Thread David Shaw
On Jun 5, 2009, at 10:59 AM, James P. Howard, II wrote: On Fri Jun 5 10:52:48 2009, David Shaw wrote: --allow-secret-key-import is a no-op. It is no longer used for anything. Really? I could not import last week without it. howar...@thermopylae:~$ gpg --version gpg (GnuPG/MacGPG2

Re: backup all keys of DSA+ELG pair?

2009-06-05 Thread David Shaw
On Jun 5, 2009, at 12:27 PM, Kārlis Repsons wrote: On Friday 05 June 2009 15:23:10 Werner Koch wrote: On Fri, 5 Jun 2009 16:59, j...@jameshoward.us said: On Fri Jun 5 10:52:48 2009, David Shaw wrote: --allow-secret-key-import is a no-op. It is no longer used for anything. Really? I

Re: Possible to recreate GPG using pen and paper?

2009-06-05 Thread David Shaw
On Jun 5, 2009, at 2:52 AM, Harry Rickards wrote: Would it be possible to do the same job that GPG does (using all the same algorithms) simply using a pen and paper? You can do simple public key crypto with RSA, by choosing two primes and doing a multitude of stuff with them. I understand

Re: the preference of signing keys question

2009-06-06 Thread David Shaw
On Jun 6, 2009, at 5:26 AM, Kārlis Repsons wrote: Hi, still I have questions :) This time: is there some gnupg dictated way of setting preference of which signing/encrypting key to use? For example, I have a long RSA subkey, which I created just in case. I'd like to use DSA now, but my mail

Re: Primary uid not honored in 1.4.9

2009-06-11 Thread David Shaw
On Jun 11, 2009, at 3:57 AM, Todd A. Jacobs wrote: I've attempted (several times, in fact) to create a key pair with three UIDs: one primary and two others. Whether using Seahorse or the command line, I will manually set one of the UIDs as primary. This *appears* to work locally, but if I e

Re: Email signature

2009-06-11 Thread David Shaw
On Jun 11, 2009, at 6:32 AM, Rob Cilissen wrote: First of all: I like this email signing en encryption. But I have a "problem". No one I know uses PGP to sign mails. Now I don't want to act as the cumputernerd and send everybody unasked signed mails and hope they also ara going to use PGP. Is

Re: Verify signature by specific key

2009-06-17 Thread David Shaw
On Jun 17, 2009, at 8:58 AM, Brian Mearns wrote: I'm looking for an automated way to verify that a signature was made by a specific key. It's not sufficient to just verify that the signature is valid and known to my keyring, I want to confirm who it belongs to. I was hoping the -u option would w

Re: cannot pass in input and passphrase at the same time in batch mode?

2009-06-22 Thread David Shaw
On Jun 18, 2009, at 8:41 PM, Harry wrote: Hello guys, I ran into a problem when using gpg to sign and encrypt. I have a test run below (in bash): $echo abcd | gpg -u b...@xyz.com --output message.pgp -r al...@123.com -se --passphrase-fd 0 << EOF <123456 There is no error but after decry

Re: Hibernation and secret keys

2009-06-23 Thread David Shaw
On Jun 23, 2009, at 7:28 AM, Werner Koch wrote: On Sun, 21 Jun 2009 00:10, t.e...@yahoo.com said: So, here is the question: Is is possible to secure gpg (or PGP or TrueCrypt for that matter) on a Windows system? If you have the ability to run a program if hibernation kicks in, you may want

Re: Key propagation

2009-06-23 Thread David Shaw
On Jun 23, 2009, at 2:33 PM, Daniel Kahn Gillmor wrote: On 06/23/2009 12:45 PM, franv wrote: I was wondering if it is possible to limit key propagation, that is the number of times a key can be exported and reimported. A key is a piece of digital information; as such, it can be transferre

Re: Key propagation

2009-06-23 Thread David Shaw
On Jun 23, 2009, at 12:45 PM, franv wrote: I was wondering if it is possible to limit key propagation, that is the number of times a key can be exported and reimported. No. If I want only 1 or 2 other people to have my key, is it possible during the key creation to give it a parameter sta

Re: corrupted file?

2009-06-23 Thread David Shaw
On Jun 23, 2009, at 3:35 PM, Joseph Oreste Bruni wrote: Here's the weird part: If I download the file using Safari I receive the file correctly. If I download the file using the command-line "ftp" on either OS X (10.5.7) or FreeBSD (7.2) the file appears corrupted and is slightly smaller.

Re: Key propagation

2009-06-24 Thread David Shaw
On Jun 24, 2009, at 12:21 AM, Daniel Kahn Gillmor wrote: On 06/23/2009 10:53 PM, David Shaw wrote: Unfortunately, local signatures do not work that way. Each implementation strips local signatures both on export and on import (just in case someone leaked one on export). They just don't

Re: Question of a beginner: DSA/ElGamal or RSA/Elgamal with a higher number of encryption?

2009-06-26 Thread David Shaw
On Jun 25, 2009, at 6:30 AM, Alexander Delau wrote: I'm a beginner in encrypting E-Mails. It would bei nice if you could help me in my question: I want to use GnuPG with a masterkey (to sign) and a subkey (to encrypt) on Windows XP (GnuPG 1.4.9) and Ubuntu (GnuPG ?.?.?). Now I'm not sur

Re: defining port number for keyserver searches

2009-06-29 Thread David Shaw
On Jun 29, 2009, at 8:43 AM, Malte Gell wrote: Hi there, when doing a keyserver search on the server side it seems port 11371 is used. I would like to define a fixed port number (the same 11371) for gpg which waits for the answer from the keyserver. Can I tell gpg at which port to listen?

Re: My public key block appears different on keyservers

2009-07-01 Thread David Shaw
On Jul 1, 2009, at 9:05 AM, Matt Gantner wrote: Hello. I have uploaded my public key (GnuPG v2.0.10 (Darwin)) via command line and copy / paste methods into keys.gnupg.net and pgpkeys.mit.edu and when I look up the key on the systems they are different. I have been looking at this problem for a

Re: My public key block appears different on keyservers

2009-07-02 Thread David Shaw
On Jul 2, 2009, at 8:36 AM, Matt Gantner wrote: I'm not terribly familiar PNG or GPG keys so bear with me. I am understanding your statement to be saying that the two keys are really the same asci text but the line breaks make them appear to be different. No. I'm saying that line breaks are

Re: algorythm 11 mistake mac

2009-07-07 Thread David Shaw
On Jul 7, 2009, at 2:55 AM, Friedrich Fuhr wrote: Hello to all. I have a Problem: When i try to send a signed mail message i get a window with the following text: internal failure: the hash algorithmus 11 is not allowed with rfc3156 the message couldn´t signed with gpg You need to contact

Re: algorythm 11 mistake mac

2009-07-07 Thread David Shaw
On Jul 7, 2009, at 10:37 AM, Charly Avital wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On Jul 7, 2009, at 9:08 AM, David Shaw wrote: On Jul 7, 2009, at 2:55 AM, Friedrich Fuhr wrote: Hello to all. I have a Problem: When i try to send a signed mail message i get a window with

Re: algorythm 11 mistake mac

2009-07-07 Thread David Shaw
On Jul 7, 2009, at 1:49 PM, Charly Avital wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA224 On Jul 7, 2009, at 12:03 PM, David Shaw wrote: [...] You are using SHA-256. Try SHA-224. Here you go. With PGP/MIME turned on. David

Re: algorithm 11 mistake mac

2009-07-07 Thread David Shaw
On Jul 7, 2009, at 4:45 PM, Charly Avital wrote: According to previous posts and result of tests, it seems that the problem is with GPGMail signing with OpenPGP/MIME *and* SHA224. OpenPGP/MIME is set by default when sending a message with an attachment, or a multi-part message (e.g. HTML for

Re: algorithm 11 mistake mac

2009-07-07 Thread David Shaw
On Jul 7, 2009, at 5:32 PM, Robert J. Hansen wrote: [I]t's chopping sha256 down to 224 bits to fit. As I understand things, this is largely (almost entirely) irrelevant. Am I mistaken? Possibly. It depends on what you believe it is irrelevant for. A user using SHA-256 reasonably expects

Re: algorithm 11 mistake mac

2009-07-07 Thread David Shaw
On Jul 7, 2009, at 6:10 PM, Robert J. Hansen wrote: On Jul 7, 2009, at 6:02 PM, David Shaw wrote: Or are you asking if there is there a significant difference between SHA-256 truncated to 224 bits and straight SHA-224 in terms of hash strength? If so, no, there really isn't. SHA-2

Re: gnupg not building with gcc4 and --enable-minimal option

2009-07-08 Thread David Shaw
On Jul 7, 2009, at 12:08 PM, Senthilkumar .E wrote: Hi, I am trying to build gnupg on a RHEL box. I am not able to build gnupg with gcc4. When I downgrade to gcc3 it is building. Looks like this a bug with configure (http://lists.gnupg.org/pipermail/gnupg-devel/2008-April/024364.html ). Is

Re: 8192bit RSA keys

2009-07-08 Thread David Shaw
On Jul 6, 2009, at 4:21 AM, martin f krafft wrote: Hey folks, Two years ago, there was a thread on this list, in which RSA key sizes >2048 were discussed [0]. In these two years, the crypto-world has been shaken up a bit, and computers got yet a bit more powerful. 0. http://lists.gnupg.org/pip

Re: gnupg not building with gcc4 and --enable-minimal option

2009-07-08 Thread David Shaw
Please don't top-post. > I am trying to build gnupg on a RHEL box. I am not able to build gnupg with gcc4. When I downgrade to gcc3 it is building. Looks like this a bug with configure (http://lists.gnupg.org/pipermail/gnupg-devel/2008-April/024364.html ). Is it fixed on the latest gnupg ver

Re: Opinions on RIPEMD vs SHA?

2009-07-08 Thread David Shaw
On Jul 8, 2009, at 12:56 PM, Brian Mearns wrote: I'm considering making my default hash RIPEMD160: does anyone have any opinions on how this compares to SHA-2 algorithms in terms of both security and availability? I like the idea that RIPEMD was developed in an academic community instead of the

Re: 8192bit RSA keys

2009-07-09 Thread David Shaw
On Jul 9, 2009, at 5:39 AM, Roscoe wrote: On Thu, Jul 9, 2009 at 3:36 AM, David Shaw wrote: ... If you're looking for a more immediate reason, though, note that if you make a RSA key larger than 2048 bits you can't use it with the spiffy new OpenPGP smartcard. Oh, something

Re: Encryption keys in the OpenPGP spec

2009-07-26 Thread David Shaw
On Jul 26, 2009, at 9:40 PM, James P. Howard, II wrote: I am trying to understand the differences in key types and looking at encryption keys in particular. RFC 4880 has this to say on the matter of key flags: 0x04 - This key may be used to encrypt communications. 0x08 - This key

Re: IT Department having the secure key.

2009-07-27 Thread David Shaw
On Jul 27, 2009, at 5:25 AM, arcintl wrote: i wish to setup GNUpg for my work (i am the IT Administrator) but i have a few questions. First: if the user creates a key and then leaves the company. assuming he/she didnt tell anyone the pass phrase and was the only key used, are those files l

Re: IT Department having the secure key.

2009-07-27 Thread David Shaw
On Jul 27, 2009, at 8:29 AM, Daniel Kahn Gillmor wrote: And: You can only encrypt the files for one key. So only one user will have access to the files (owns the files), as long as you don't share the keys. For example you can introduce company wide keys or deparmtement keys and distribut

Re: IT Department having the secure key.

2009-07-27 Thread David Shaw
Somehow this thread mutated into being on both gnupg-devel and gnupg- users. I'm only replying to gnupg-users. Let's try to keep it on one list. On Jul 27, 2009, at 9:41 AM, Ingo Krabbe wrote: You actually can encrypt files to more than one OpenPGP key, so that anyone holding any of the re

Re: Encryption keys in the OpenPGP spec

2009-07-27 Thread David Shaw
On Jul 27, 2009, at 11:15 AM, James P. Howard, II wrote: On Sun Jul 26 2009 23:09:18 GMT-0400 (EST) , David Shaw wrote: Because it is difficult (or nearly impossible) to determine the difference from the perspective of GnuPG. That is, I as a person know what I'm encrypting and what I

Re: new AES 256 vulnerability

2009-07-30 Thread David Shaw
On Jul 30, 2009, at 4:17 PM, ved...@hush.com wrote: a new attack has been found against AES - 256 http://www.schneier.com/blog/archives/2009/07/another_new_aes.html it only works against 10 round AES-256 (which normally has 16 rounds) It breaks 11 rounds of 14. David _

Re: Changing GPG's default key type?

2009-07-30 Thread David Shaw
On Jul 30, 2009, at 7:06 PM, Robert J. Hansen wrote: No; only people using OpenPGP applications that don't support RSA will have problems. This is potentially quite a lot of people. The last time I tallied it up there were at least ten different OpenPGP implementations, and some of them o

Re: Changing GPG's default key type?

2009-07-30 Thread David Shaw
On Jul 29, 2009, at 11:14 AM, Jan Suhr wrote: For my understanding GnuPG is standard conform and creates a "DSA primary key (1024 bits - not "DSA2") with an Elgamal subkey per default." It was discussed in May to change this standard to 2048-bit RSA key: http://www.imc.org/ietf-openpgp/mail-

Re: list of OpenPGP implementations [was: Re: Changing GPG's default key type?]

2009-07-30 Thread David Shaw
On Jul 30, 2009, at 9:23 PM, Robert J. Hansen wrote: Hence, McAfee may be a much bigger player than people think. Is that an example of a potential problem implementation? Note that the McAfee product does support RSA (not surprising, given its ancestry). David ___

Re: list of OpenPGP implementations [was: Re: Changing GPG's default key type?]

2009-07-30 Thread David Shaw
On Jul 30, 2009, at 10:06 PM, Robert J. Hansen wrote: Is that an example of a potential problem implementation? Note that the McAfee product does support RSA (not surprising, given its ancestry). I don't know. There are a wide number of implementations with various degrees of conformanc

Re: latest stable version of GnuPG that decrypts Adobe PDF files

2009-07-31 Thread David Shaw
On Jul 31, 2009, at 9:21 AM, Reich, George wrote: Hello, Can anyone suggest the latest stable version of GnuPG that successfully does decryption for Adobe PDF files? And if so, are there installation instructions for that version? I'm going to guess that you are referring to the built-in

Re: Transferring GnuPG accounts

2009-08-07 Thread David Shaw
On Aug 7, 2009, at 6:43 PM, Adam Bogacki wrote: Hi, Having recently set up lenny on a new box, I copied the contents of ~/.gnupg from the old etch box to a USB stick and then to the lenny box - but find that mutt does not do digital signatures as it did on the old one. What am I missing here ?

Re: Setting up SKS Keyserver

2009-08-11 Thread David Shaw
On Aug 11, 2009, at 12:31 PM, Sebastian Wiesinger wrote: I'm thinking about setting up an SKS Keyserver. My question is, is there some sort of mailinglist or something where this is ontopic? http://lists.nongnu.org/mailman/listinfo/sks-devel is the place. As I understand I would also be in n

Entropy-on-a-key

2009-08-11 Thread David Shaw
This is cute: http://www.entropykey.co.uk/ (Reasonably on-topic as the device would work with GnuPG (at least on Linux), as it seems to feed /dev/random) David ___ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/list

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