Re: [openssl-users] beginner needs advice on data signature/verification

2015-07-14 Thread Jakob Bohm
(continuing top posting to keep thread consistent) Note that the point of using an X.509 signature at file creation time and/or client approval time was to reuse the internal file structure that is already designed to hold that particular signature format (specifically, the internal file struc

Re: [openssl-users] beginner needs advice on data signature/verification

2015-07-11 Thread Michael Wojcik
el Wojcik Technology Specialist, Micro Focus From: openssl-users [mailto:openssl-users-boun...@openssl.org] On Behalf Of Jakob Bohm Sent: Wednesday, June 24, 2015 01:53 To: openssl-users@openssl.org Subject: Re: [openssl-users] beginner needs advice on data signature/verification (Contin

Re: [openssl-users] beginner needs advice on data signature/verification

2015-06-23 Thread Jakob Bohm
(Continuing top posting to keep thread consistent). First of all, if the client itself is compromised, the file content can be compromised just before you do whatever you do to assure the server that this was what the user of the client wanted. No way to fix that other than to keep the client

Re: [openssl-users] beginner needs advice on data signature/verification

2015-06-23 Thread Marco Warga
Many thanks for the answer. I should have been more specific on the requirements right away. The "file" was really just an example to keep it simple. Reading my own writing, I would probably have suggested what you did :-) So here are the facts: - client/server are not connected to the intern

Re: [openssl-users] beginner needs advice on data signature/verification

2015-06-22 Thread Michael Wojcik
Response inline below, prefixed with "MW". (Unfortunately Outlook is incapable of replying to HTML messages properly, so you'll have to excuse the formatting.) Michael Wojcik Technology Specialist, Micro Focus From: openssl-users [mailto:openssl-users-boun...@openssl.org] On Behalf Of Marco W