NC_Net v2.15 - New Version (with Perfomance counter FIX)

[Andreas Ericsson]

Anthony Montibello wrote:
> That is true,  However my concern about adding encryption to check_nt
> is how to implement it so that the TCP listener port of NC_Net does
> not loose backwards compatibility with older versions of check_nt.

If you can parse the incoming request plaintext, don't decrypt it. If 
you can't, decrypt it and try again. Still no go? Invalid request or 
incompatible cipher. How hard is that?

> (this is a part of my original requirements goals of NC_Net being a
> drop in replacement for NS_Client)
> 
> 
> About the level of complexity for the conversion; this would be
> moderate. It did take over full week to get the Xor running when I
> converter send_NSCA to c#.  This is mostly due to c# being more like
> Java than C in both semantics and syntax.

Doesn't it have inline assembly? An xor cipher is about 8 lines of asm, 
with bounds and error checking, so it couldn't possibly take a full week 
even with the monkey+typewriter theory.

>  Once some of the current
> objective are met, I can look into adding encryption to the
> check_nt/NC_Net port while still maintaining its backwards
> compatibility.
> 
> 
> 
> On Fri, 11 Feb 2005 10:10:05 +0100, Andreas Ericsson <ae at op5.se> wrote:
> 
>>Anthony Montibello wrote:
>>
>>>I am not sure how I would be able to add non-plaintext authentication
>>>scheme to this command at this time.  How would this be implemented
>>>into check_nt? because check_NT uses plain only.
>>>
>>
>>But nsca is able to select from a wide range of different ciphers. It
>>wouldn't be an overwhelming feat to add that same sort of encryption to
>>check_nt (although a bit timeconsuming).
>>
>>
>>>>--
>>
>>Andreas Ericsson                   andreas.ericsson at op5.se
>>OP5 AB                             www.op5.se
>>Lead Developer
>>
> Thanks for the advise,
> Tony
> 
> 
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-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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