[SOLVED] Sha256sum failure? Mint Cinnamon beta 18 64bit

[palimmo]

I've downloaded the .iso from the mirror in Cologne.
The check fails, apparently. Am I wrong?

Code: Select all

 $ gpg --recv-key A25BAE09
gpg: requesting key A25BAE09 from hkp server keys.gnupg.net
gpg: key A25BAE09: "Linux Mint ISO Signing Key <root@linuxmint.com>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1
 $ gpg --list-keys --with-fingerprint
/home/alessio/.gnupg/pubring.gpg
--------------------------------
pub   4096R/D38B4796 2016-04-12
      Key fingerprint = EB4C 1BFD 4F04 2F6D DDCC  EC91 7721 F63B D38B 4796
uid                  Google Inc. (Linux Packages Signing Authority) <linux-packages-keymaster@google.com>
sub   4096R/640DB551 2016-04-12 [expires: 2019-04-12]

pub   4096R/A25BAE09 2016-06-07
      Key fingerprint = 27DE B156 44C6 B3CF 3BD7  D291 300F 846B A25B AE09
uid                  Linux Mint ISO Signing Key <root@linuxmint.com>

$ gpg --verify sha256sum.txt.gpg sha256sum.txt
gpg: Signature made Tue 07 Jun 2016 06:46:57 PM CEST using RSA key ID A25BAE09
gpg: Good signature from "Linux Mint ISO Signing Key <root@linuxmint.com>"
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 27DE B156 44C6 B3CF 3BD7  D291 300F 846B A25B AE09
 $ sha256sum -b linuxmint-18-cinnamon-64bit-beta.iso
8a2d3a3276d36497470156063e02ba894d5b9d562a8edf856dd29ee479eb55c4 *linuxmint-18-cinnamon-64bit-beta.iso

why?
Or should I look for 8a2d3a3276d36497470156063e02ba894d5b9d562a8edf856dd29ee479eb55c4 in the sha256sum.txt file?
There it is listed...

[xenopeek]

How exactly is this a failure? Output is completely correct and as expected as far as I see.

Are you being tripping up by this part?

gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.

Yes, there is no established chain of trust between you can Clem. Basically this says you don't know him in real life and you don't know anybody that does. Poor you Unless you sign Clem's key as trusted this is the message you get.

[Cosmo.]

It is not clear for me, why you titled your thread with "sha256sum failure".

I suppose that you mean with Cologne = Netcologne. This happened to be exactly the mirror, where I downloaded the beta iso (also 64 bit here). When I did this I compared the sha 256 has sum with the one in the provided text-file and it matched exactly. So no failure to be seen.

[palimmo]

This is the procedure to be followed:
https://linuxmint.com/verify.php

I had to read it a few times to fully understand..