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I'm a student and now 2nd time poster, please excuse any lacking detail on my part.

For my exams I'm doing a cross-platorm application using RabbitMQ for messaging. It'll serve as POC for both SOA and Security. The application purpose is a mocked shopping system, with a component for each action e.g. ordering, payment, shipping. The purpose is secondary, but they all communicate through a RabbitMQ-broker.

My questions are:

How to go about encrypting and handling key pairs in such a system?

What major components are involved?

What is the major concerns/pitfalls related to enterprise scale encryption?

I'm familiar with encryption and terminology, but not at scale.

My goal is to be able to have clients on web and mobile communicating securely with the broker, while maintaining internal confidentiality. Preferably using as few platform specific libraries as possible.

FOSS is preferred, and any pointer or advised literature has interest.

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Even setting aside our usual reluctance to do people's homework for them, this question is terrifically broad. Take a look at the FAQ and consider rewriting to focus on a specific part of the process you're having trouble with. – Graham Hill Nov 16 '12 at 17:00
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You are essentially asking the internets to solve a very very difficult problem. Break this problem down into smaller components, and you'll find that all of these questions have been asked before. Voting to close. – Rook Nov 17 '12 at 1:25
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Yes, do look around the site. I see some "answers" in the related links on the right hand column of this page. – makerofthings7 Nov 17 '12 at 15:04
@GrahamHill Being a student, doesn't mean you automatically post homework assignments. I realize its a big subject, which is why i was asking for references to literature or basic pointer. This was totally useless. Seems you can't as anything but small or super specific question, unless attaching a 50-100 rep bounty... – Peter Lindhard Nov 18 '12 at 19:46

closed as too localized by Rook, Iszi, Terry Chia, makerofthings7, Scott Pack Nov 17 '12 at 18:39

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ.