[Scons-users] Feature Request: Add Support for detecting build changes via sha256

[Marc Branchaud]

On 2018-08-13 05:19 PM, Bill Deegan wrote:
> Ryan,
> 
> Curious why SCons would be run in an SELinux environment and what 
> changes you'd expect to need to make it run as such?
> (Are you planning to run SCons with elevated privileges (as root for 
> example)?)
> 
> I can't see any reason why sha256 couldn't be used instead of MD5.

I agree, just please don't make it the default.  SHA256 is much slower 
than MD5.

(And, no, SCons does *not* need a more secure hash function.  MD5's 
properties are perfectly suitable for SCons's purposes.)

		M.


> However such change would need to be compatible with existing md5 based 
> sconsigns so it might be a bit more complicated that just changing the 
> hash used.
> 
> Feel free to make a pull request via github and we can review and help 
> guide the patches into something the project could merge.
> 
> Thanks,
> Bill
> SCons Project Co-Manager
> 
> On Mon, Aug 13, 2018 at 7:45 AM, RUHGE, RYAN L CTR USAF AFMC 
> AFLCMC/HBAW-OL <ryan.ruhge.ctr at us.af.mil 
> <mailto:ryan.ruhge.ctr at us.af.mil>> wrote:
> 
>     Currently we have to patch SCons to use sha256 detection for
>     detecting file changes when building to meet security requirements. 
>     Could SCons be updated to support FIPS/SELinux natively, via a
>     command line option possibly?____
> 
>     __ __
> 
>     //SIGNED//____
> 
>     Ryan L. Ruhge____
> 
>     Cloud Analysis Forecast____
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>     Contractor, 557th Weather Wing/SEMS____
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>     Bld 185 Rm 2420-01____
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>     402.232.0534____
> 
>     ryan.ruhge.ctr at us.af.mil <mailto:ryan.ruhge.ctr at us.af.mil>____
> 
>     __ __
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