[cumbria_lug] verifying postal media

[Simon Hobson]

Andrew wrote:
>I may also be missing something but I dont have the ISO file the 
>disk was created with as the disk was posted from a distribution 
>vendor.
>
>What Im stuck on is how to compare the contents of the disk with the 
>published SHA256 image checksum?

How about "sha256sum -b /dev/sr0" and compare the output with what's 
been published.

If you use check mode, you'd need to edit the signature file so that 
the filename matches what you are testing. Ie, if the originator did 
a hash of "foo.iso", it will fail if you try a comparison later with 
a file called "bar.iso" - I'd expect it to complain it can't find 
foo.iso.

-- 
Simon Hobson

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