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Re: Deltarpm *not* ready for new RPM checksums (was Re: Ready for new RPM version?)





On Tue, 10 Mar 2009, Jonathan Dieter wrote:

On Tue, 2009-03-10 at 19:41 +0200, Jonathan Dieter wrote:
Ok, I've been trying this, but how can we tell if the sequence is sha256
or md5 if we're *just* given the sequence (i.e. applydeltarpm -c -s
audit-libs-1.7.12-1.fc11-04548395de7d18795d88b32ea98897e90140 where it's
a sha256 sequence)?

Ok, I've got it.  We just check against md5 first, then sha256 if md5
doesn't match.  It's not elegant, but it should work fine, especially
since we're only checking for verification, *not* security.


why not just check the length of the checksum? md5 checksums are always going to be SHORTER than sha256.

Seems like a length check is lighter-weight.

-sv


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