OpenPGP Signing

Posted by singpolyma on Stack Overflow See other posts from Stack Overflow or by singpolyma
Published on 2010-03-30T20:22:29Z Indexed on 2010/04/01 16:33 UTC
Read the original article Hit count: 501

Filed under:

openpgp

|

pgp

|

gnupg

|

cryptography

I'm reading RFC4880 in an attempt to produce an implementatdion of a subset of OpenPGP (RSA signatures) using http://phpseclib.sourceforge.net/. I have the publickey and compression-literal-signature packets parsed out. I can extract n and e and feed them to Crypt_RSA to construct a verifier. I tell it I'm using sha256. It then needs a "message" and a " signature" parametre. I get the signature data out of the signature packet no problem. The question I have is: what is "message"? According to sec tion 5.2.4 it's some combination of the literal data packet(s?) (their bodies or the whole packet?) and the "hashed" subpackets. Do I just concat all the data packets and the hashed packets together in the order they appear?

© Stack Overflow or respective owner

Related posts about openpgp

OpenPGP Signing

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm reading RFC4880 in an attempt to produce an implementatdion of a subset of OpenPGP (RSA signatures) using http://phpseclib.sourceforge.net/. I have the publickey and compression-literal-signature packets parsed out. I can extract n and e and feed them to Crypt_RSA to construct a verifier.… >>> More
How to obtain a S/MIME certificate for e-mail encryption?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
There are parties, e.g. enterprises, that uses S/MIME certificates for e-mail encryption. To my understanding Thunderbird has support by default for S/MIME. But I have not found a way to obtain a personal S/MIME certificate to be used on a Ubuntu system. Thus my question: How to obtain a S/MIME… >>> More
Couldn't generate PGP key: General Error

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I want to get involved with Ubuntu and I've decided to join the Bug Squad. Launchpad tells me that I have to some OpenPGP Fingerprint key, and I followed instructions from this link: https://launchpad.net/+help-registry/openpgp-keys.html#publish All goes fine, I enter all the necessary information… >>> More
Openpgp does not work in my Thunderbird-Installation

as seen on Super User - Search for 'Super User'
Hello community, as mentioned above - i encountered serious troubles. here are the versions of the related software: SuSE 11.2, Thunderbird v.3.1.6, released October 27, 2010, Firefox 3.6 v3.6.12 I created an installations with an own partition both for the user and for the TB-Mails. For a new… >>> More
Une implémentation en JavaScript introduit OpenPGP aux Webmails, sécuriser ses emails ne requiert plus l'utilisation d'un client de messagerie

as seen on Developper.com - Search for 'Developper.com'
Une implémentation en JavaScript introduit OpenPGP aux Webmails Sécuriser ses emails ne requiert plus l'utilisation d'un client de messagerie Si une implémentation de la machine virtuelle Java en JavaScript peut être vue comme un délire de Geek, reprendre la norme de chiffrement OpenPGP avec… >>> More

Related posts about pgp

WinSCP putting multiple files on sftp site

as seen on Super User - Search for 'Super User'
WinSCP 5.2 I wanted to put multiple files with a file extension .pgp on an sftp site. When I tested my original command line (see below) and it only placed the first *.pgp alphabetical file (D:\a.csv.pgp) on the sftp site. I tried specifying *.PGP and *.pgp without any changes - only one file (D:\a… >>> More
Installing Disastry's PGP 2.6.3ia multi06 on 12.04 LTS

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
How can I install Disastry's version of PGP 2.6.3ia-multi06 on Ubuntu 12.04 LTS? His site with the source code is here: http://www.spywarewarrior.com/uiuc/disastry/263multi.htm He already compiled a unix version of pgp and it's in the Linux section of his download. How can I either copy and install… >>> More
Is it possible to run pgp 6.5.8 freeware on Windows 7 64 bit machine?

as seen on Super User - Search for 'Super User'
I am trying to get the PGP Command Line -Freeware Version 6.5.8 by Networks Associates working on a Wndows 7 64 bit machine. Does anyone know if it is possible? I installed it in C:\pgp when i run pgp, it keeps telling me that it can't find the pgp.cfg file. My PGPPATH is defined and set to C:\pgp I… >>> More
Need example for BouncyCastle PGP File encryption in C#

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to write an c#.net app to encrypt files using my private key (in ascii format) and any other public key (also in ascii format). The BouncyCastle library looks like the correct thing to use, but I cannot find documentation for C#. Could anyone please give me an example of how to use… >>> More
Easiest way to decrypt PGP-encrypted files from VBA (MS Access)

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to write code that picks up PGP-encrypted files from an FTP location and processes them. The files will be encrypted with my public key (not that I have one yet). Obviously, I need a PGP library that I can use from within Microsoft Access. Can you recommend one that is easy to use? I'm looking… >>> More