Re: simple crypto solution(s)?

On 03/18/2018 06:12 PM, Mark Weisler wrote:
>
>> On Mar 18, 2018, at 5:31 PM, Lister <[email protected] 
>> <mailto:[email protected]>> wrote:
>>
>> List,
>>
>> I am trying to solve a little problem, but since I don't have much idea
>> about cryptography tools on linux, I would like to get some pointers
>> from this list. Also, if the problem I have develops to something big,
>> there may be a paid consulting opportunity here as well
>>
>> Two entities (say A and B, non-humans) are connected through a high
>> speed, point to point, short distance (say 1m max) serial link. Both
>> entities have their own OS and file systems. I need to create a key
>> (private/public) pair and send some information (less than 256 bytes) as
>> a part of the handshake procedure between A and B (I already have a
>> custom protocol to do handshake). Also, I am not bothered about key
>> rings or publishing the public keys as the project targets a private
>> system, not connected to internet, but _CANNOT_ use symmetric keys.
>
> I recommend getting acquainted with GnuPG, an implementation of OpenPGP.
> https://www.gnupg.org/
Started on this, thanks.
>>
>> My questions are:
>>
>> How do I create a (moderately) strong key pair in linux for asymmetric
>> encryption?
> There are numerous public instructions on the Web about how to create 
> keys and move them between hosts. The link above is a start.
>>
>> What are the tools used?
>
>>
>> Do these tools have APIs and source code available (this is most 
>> important)
>>
> APIs - yes. Open source code - yes.
> BTW, the distance between hosts is irrelevant for GnuPG purposes.
Yeah. What I intended to convey was that sideline attack resistance is 
not a factor to be considered.
thanks
Lister.

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