RS> The same INPUT file, sure, clearly not the same OUTPUT file tho,
RS> the length was different. So the CRC should be different too.

PE> zip calculates the CRC on the input data.

RS> I find that hard to believe. It complains about
RS> a damaged archive without having unzipped it first.

Easiest way to confirm is by doing a zip -0 and then a zip -9, in both
cases followed by a zip -v.

Another way is to read the source code, as I have done.

BFN.  Paul.
@EOT:

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