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I have downloaded Mageia 4 and it says that after downloading I should verify the signatures. I burned the ISO to a DVD and explored that but no luck. Please could someone tell me how I verify a signature. This must be basic stuff but it stumped me.
Where are there instructions that tell you to verify the signatures? I went to the Mageia 4 downloads page and they don't say anything about signatures. When I download the torrent file there is no signature files bundled with it (only hash checksums). Usually, when software is signed it is using PGP/GPG or S/MIME. Share your source. Help me help you.
...then hit the enter key. It will then calculate the checksum of the iso, may take a few seconds, and will display a long string of characters on the next line. If the string of characters matches the ones shown in the download page (I have hilighted blue) then the file is OK. If they are different then the file is corrupted.
It is sufficient to check either the md5sum or the sha1sum. They will both be correct or they will both be incorrect.
$ sha1sum Mageia-4.1-x86_64-DVD.iso
If signatures do not match, DO NOT use this ISO. Double-check and try to download again.
This only turns up after clicking the download button. Thanks for you help.
That's poor wording on their part. Making sure the checksums match is what they should say because those downloads are not signed. In any case, as astrogeek pointed out you need to open a terminal and run those commands to verify the checksums.
I am not a torrent user, but that sounds like a very useful idea!
Originally Posted by veerain
if [ "hash1" == "hash2" ]; then echo OK; else echo FAIL; fi
The red must be quoted I think...
But even copy/paste is relatively a lot of trouble to compare the checksums.
In reality it is sufficient to simply compare the first few and last few characters which can be done with a quick look. It would be exceedingly rare to have more than 4-5 leading characters match for a corrupted iso. The difference in the checksums is not proportional to the amount of difference in the files. Even a single bit of difference will radically alter the checksum.