Both Files begin with A8 03 50 47 50 Michael Everett Strout Systems Administrator & Software Engineer ClearStructure Financial Technology, LLC michael.str...@clearstructure.com +1 203 205 2720 (direct) +1 203 942 5031 (mobile) +1 203 205 2700 (main) +1 203 205 2739 (fax)
Transparent is Good. Clear is Better. www.clearstructure.com -----Original Message----- From: David Shaw [mailto:ds...@jabberwocky.com] Sent: Monday, April 12, 2010 18:01 To: Michael E. Strout Cc: gnupg-users@gnupg.org Subject: Re: Invalid Marker Packet issue using PGP to encrypt using GnuPG certificate On Apr 12, 2010, at 12:45 PM, Michael E. Strout wrote: > Hi all, > We're using GnuPG to both create an asynchronous key pair, > the public key of which we provide to clients, and to decrypt the files > encrypted with that certificate after its been transfered. One particular > client is uploading files which return an "Invalid Marker Packet" error when > I try to decrypt them. > > I've tried installing the newest versions of gpg, but it doesn't matter > whether I'm using 1.4.9 or 2.0.12, I get an "invalid marker packet" error. > > I've opened up an older upload which I was able to decrypt and the most > recent upload in a hex editor and can see that the bytes following the PGP in > the marker packet are different, > > i.e. the one in the old file is 50 47 50 c1 c0 4c which reads as P G P 193 > 192 76 or PGP 12697676 or PGPÁÀL > While the one in the new file is 50 47 50 C1 C1 4E which reads as P G P 193 > 193 78 or PGP 12697934 or PGPÁÁN The only valid marker packet contains exactly 3 bytes: P, G, and P. Given that the following byte is C1, it looks like that's the beginning of the next packet, rather than part of the marker packet. C1 would be the encrypted session key packet, which makes sense at that point in the document. Can you tell me a few bytes from *before* the P, G, P? Perhaps the length is wrong. David ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - CONFIDENTIALITY NOTICE - This e-mail message from ClearStructure Financial Technology, LLC is intended only for the individual or entity to which it is addressed. This e-mail may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you received this e-mail by accident, please notify the sender immediately and destroy this e-mail and all copies of it. We take steps to protect against viruses but advise you to carry out your own checks and precautions as we accept no liability for any which remain. We may monitor emails sent to and from our server(s) to ensure regulatory compliance to protect our clients and business. _______________________________________________ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users
