[Python-ideas] hook zipfile.ZipExtFile to check secure hash sums

[Serhiy Storchaka]

On 29.08.12 19:08, Daniel Holth wrote:
> I am checking the sha256 sums of all the files in a zip archive as it
> is being extracted by overriding ZipExtFile._update_crc, but it is
> inconvenient.
>
> It would be nice to have a hook, for example the ZipExtFile
> constructor could be a property of ZipFile and conveniently replaced
> with a ZipExtFile subclass.

Where do you get the checksums for control? ZIP file format specifies 
the checksum algorithm, file with another saved checksums is not ZIP 
file (or is invalid ZIP file).