Questions tagged [signature]
The signature tag has no usage guidance.
107
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Opera repo not signed due to GPG error NO_PUBKEY [duplicate]
I am unable to perform software updates on my new Ubuntu 22.04 installation due to the following error/issue:
Warning: GPG error: https://deb.opera.com/opera-stable stable InRelease: The following ...
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1
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2
answers
3k
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Yarn producing GPG Error
I am trying to update my Kubuntu 22.04 LTS.
This error occurs:
7 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: An error occurred during the signature verification. The ...
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0
votes
1
answer
217
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How to make the default ubuntu repositories trustable again?
So the other day some of my repos(including PPA's) started throwing signature.
Every time I try to update my repos I end up with this error
sudo apt update
Get:1 http://archive.ubuntu.com/ubuntu ...
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0
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261
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NICDSign issue: NICDSign client is not installed or running
I am using Ubuntu 22.04. Recently I installed NICDSign and ProxKey Token Tool. Both of them are working.(Nicdsign.list and wdproxkey-token-tool.list etc are in var/lib/dpkg/info) 'NICDSign status: ...
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1k
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Cant boot up. dell_smm_hwmon: unable to get SMM Dell signature
Using XPS 9720 and installed a fresh ubuntu 22.04 LTS over windows. Everything was going fine until i rebooted the system.
Now it doesnt boot and shows me the message:
dell_smm_hwmon: unable to get ...
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2
votes
0
answers
82
views
How do I sign a PDF file with a CA certificate (.crt)?
I have obtained a CA certificate (a .cert file) issued by Deutsche Bundesdruckerei to digitally sign PDF files. Now I'm wondering how to sign PDF files on Linux in general and Ubuntu in particular.
...
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13
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2 Questions about GPG signing and decryption
Is it true that every time you sign a document, file, repository, package, email, etc. it becomes encrypted so that you need to verify it AND decrypt it?
If so, how come you don't have to decrypt ...
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5
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0
answers
2k
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Signing pdf with Okular
I saw that in Okular we can now digitally sign a document.
I would like to know the steps from scratch to make this work. At the moment Okular tells me "There are no available signing ...
- 51
0
votes
1
answer
422
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Can't boot with secure boot and with the kernel signed
I want to use Secure Boot with my own keys and with the kernels that I sign. I have gotten Grub to boot, but not with the signed kernel. I get this: "Error: /vmlinuz-5.4.0.91-generic has invalid ...
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0
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1
answer
168
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16.04.7 LTS: Owncloud installed & un-installed, apt-get update gives Err:11 ... "The following signatures were invalid..."
I would like to fully upgrade this system to the latest LTS. But first I would like to feel the current 16.04.7 LTS is clean. I tried to install Owncloud years ago with limited success and then ...
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Why do I get an Invalid signature error using Grub2?
A year or so ago I installed Ubuntu 20.04 LTS on an Acer laptop (SSD system disk) and also made a rescue/safe experimenting FAT32 partition on the internal HDD with the contents of ubuntu-20.04-...
2
votes
1
answer
238
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Problem installing ImageMagick 7 using IMEI
I tried to install ImageMagick 7 by IMEI from github:
https://github.com/SoftCreatR/imei/
but always had this answer:
Signature verification failed!
Please check /var/log/imei.log for details.
...
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55
votes
1
answer
27k
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Invalid signature from repo.skype.com: how can I clear this? [duplicate]
Today I did sudo apt upgrade and then, as a double-check, did sudo apt update. The latter terminated with:
Hit:5 http://dl.google.com/linux/chrome/deb stable InRelease ...
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24
votes
2
answers
7k
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Why isn't `apt upgrade` getting a new software key signature for skype?
After a recent apt update && apt full-upgrade I started getting the following error when running apt full-upgrade subsequently:
Get:4 https://repo.skype.com/deb stable InRelease [4,502 B] ...
- 3,750
0
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1
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358
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Unable to verify the SHA256 checksum for Focal (20.04) LTS minimal cloud image
I'm attempting to follow the official How to verify your Ubuntu download tutorial to verify the checksum provided with the 20.04 minimal cloud image from here.
I'm getting an error from the first ...
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6
votes
1
answer
8k
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How to fix signature key?
I have tried with sudo apt-get update and sudo apt-get upgrade.
And i get this error with kubernetes error:
I have tried with these following commands below:
sudo rm /var/lib/apt/lists/* -vf
sudo apt-...
- 1,743
3
votes
2
answers
1k
views
What is wrong with ddebs.ubuntu.com
Did something expire that should not have?
I am using debug symbols on my Ubuntu 20.10 install, and now I get this when I run the apt-get update command.
W: An error occurred during the signature ...
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3
votes
2
answers
3k
views
Putting Digital Signature on PDF in Ubuntu 20.04
Adobe Acrobat DC on windows support this feature.
While snap package adobe acrobat is partially functional on linux, as it logs incompatibility message.
So actually I am looking for signing my offer ...
- 190
0
votes
2
answers
750
views
How to reinstall a repository pgp key?
I have inadvertently deleted the key that allows for updating of the system, and now when I try updating using sudo apt update I get the following terminal output
Get:1 file:/var/lib/preinstalled-pool ...
- 253
1
vote
1
answer
952
views
`error: invalid signature.` when trying to boot Ubuntu Core
I'm following instructions on the following page to the letter: https://ubuntu.com/download/kvm . When I run the kvm command, the VM screen appears containing the following error:
error: no such ...
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5
votes
0
answers
2k
views
How to sign your kernel and bootloader?
How to sign your kernel and bootloader?
How do I sign my kernel and bootloader?
Update (04-Feb-2021)
Don't think I made clear what it is that I'm trying to do. I want to do away with OEM keys and only ...
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0
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26
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Where can I suggest something to Ubuntu devs? [duplicate]
Ubuntu torrent downloads should include the PGP signature and the SHA256SUM. That would guarantee that the PGP signature and the S256SUM (current available at releases.ubuntu.com) aren't tampered.
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1
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286
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Trying to verify signature of Wasabi-1.1.12.3.deb package but it won´t find the file (THE FILE IS THERE)
Ey there,
So, i have been trying for hours to install wasabi in Ubuntu without success. Having downloaded the
files and following the guide i get to the point of not being able to verify the freaking ...
0
votes
1
answer
268
views
How do I sign a file with my smartcard on Ubuntu 20.10?
I own a latitude E7240 with a smartcard reader (broadcom 5880), running Ubuntu 20.10, and a smartcad with a qualified certificate which I want to usu to digitally sign files.
Cardpeek correctly sees ...
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1
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398
views
0
votes
0
answers
35
views
Does client OS verify packages downloaded from Ubuntu main repository? [duplicate]
Packages seem to be downloaded over http from the Ubuntu main repository, so I was wondering whether the client's OS verifies the packages once downloaded?
If so please could someone outline the ...
2
votes
0
answers
46
views
What is a easy way to sign a Apt package
I built my own linux shell and I built the package I can install it with apt install sturtzshell and it runs like it is supost to when you type sturtz But When I run edited the /etc/apt/sources.list I ...
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401
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In Claws-mail, how to put the signature above quoted text in a reply
In Lubuntu 20.04.1, I'm using Claws Mail 3.17.5 I'd like to be able to click reply and have the cursor position at the top of my message with my signature followed by the quoted text.
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2
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4k
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What exactly does a BAD signature mean?
About 16 hours ago I downloaded the Ubuntu 18.04.5 image from releases.ubuntu.com alongside its checksum file and GnuPG signature. Verifying the checksum file using the signature results in a BAD ...
1
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1
answer
586
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Bad signature on verifying the 18.04.5 sha256 checksum
I was following the "How to verify your Ubuntu download" tutorial to verify the ubuntu-18.04.5-desktop-amd64.iso download.
After the following command
gpg --keyid-format long --verify ...
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4
votes
0
answers
724
views
Having trouble upgrading from 18.04 to 20.04 likely due to lack of valid signature on older unsupported versions [duplicate]
For background, yesterday I tried to upgrade from 18.04 to 20.04 using the itsfoss guide and immediately ran into trouble. My cpu exceeds system requirements, however, it came with Win 10 and I dual-...
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320
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signature pads (Wacom ?)
Is the signing of sheets on signature pads supported under Ubuntu ?
In our shop, this is a widespread use case and it's currently based on Windows
Is an equivalent solution available under Ubuntu ?
It ...
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0
answers
37
views
sound problem / kernel signature
I have an asus zenbook ux430unr, and I would like to use ubuntu on it.
I installed ubuntu 20.04 and unfortunately the sound card is unsupported on its kernel version (5.4.0-37-generic).
So I installed ...
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5
votes
1
answer
2k
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How to remove (adobe) digital signature from PDF
This follows up my previous question: How to check if PDF has been digitally signed?.
Just in doubt a document has been digitally signed (e.g. with Adobe), how to remove the signature?
In particular, ...
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2
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1
answer
2k
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How to check if PDF document has been signed (probably with Adobe)?
I'm on Xubuntu 18.04.4 LTS. I received a document, then forwarded it to other people who should be able to modify it. However digital signatures might prevent that.
How do I check if Adobe was used to ...
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1
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1
answer
364
views
Digital signing with qdigidoc4 (Estonian ID card software) under Ubuntu 20.04
When trying to use qdigidoc4 (version 4.2.4.71) on Ubuntu 20.04, and trying to sign a container, signing fails (both with ID card and Mobile ID) and I get the following message:
ASiC_E.cpp:347 Failed ...
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votes
2
answers
9k
views
How to handle "invalid signature" in apt-get
Following an update to Focal, I had to revisit /etc/apt/sources* to update my third party repositories.
One of the reposities is for the Yorba PPA at: https://launchpad.net/~yorba/+archive/ubuntu/ppa
...
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3
votes
3
answers
4k
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How do i generate a certificate to sign pdf electronically?
I'm stuck trying to figure out what kind of certificate I need to create, and how to create it to sign PDF's with LibreOffice. I created a GnuPG key, that did not work. I tried to create a private key ...
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2
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989
views
Signature verification fails for program that I thought I removed. How to remove the program completely?
Here is the output that I get
53 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: An error occurred during the signature verification. The repository is not updated and the ...
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1
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108
views
How to sign snaps without pushing or pushing it to snap store?
I am creating a snap for my software but until now I've been using --devmode or --dangerous flag to snap install. Now, I would like to sign it, but I can't find something like step-by-step or tutorial ...
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1
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1k
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sbsign: sign a non EFI kernel
The following link explains how to sign a kernel module:
https://ubuntu.com/blog/how-to-sign-things-for-secure-boot
sbsign --key MOK.priv --cert MOK.pem my_binary.efi --output my_binary.efi.signed
...
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1
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15k
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What exactly is an ext4 signature and why am I removing it?
I was following the steps from an Ask Ubuntu answer (Increase partition size on which Ubuntu is installed?) to enlarge an Ubuntu VM I have and I'm wondering what is actually being removed here:
...
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9
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2
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894
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How to digitally sign documents in OpenOffice under Ubuntu?
On Ubuntu 19.04, Libreoffice seems to be there, but when I clicked, all the apps seem to be missing (like the word processor and the spreadsheet). So I first installed OpenOffice. Then I figured out ...
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215
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Unable to mount External HDD missing NTFS and UUID
I need some help!
The facts:
I was trying to mount a microSD card while my external HDD (Samsung M3 Portable) was plugged and sth went wrong after these mistakes at command line:
sudo wipefs --all -...
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1
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0
answers
86
views
How to specify which public key file to use with a repository?
I am trying to set up a repo on local file system on ubuntu. I will use that repo only during the installation of my product & then remove the repo.
Now I want to have my deb packages signed &...
6
votes
2
answers
2k
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Dell Canonical repository is not signed (GPG error)
With the update to 19.04 my dell repository is not working as it is marked as not signed. This is the error I get:
Ign:11 http://dell.archive.canonical.com/updates xenial-dell Release.gpg
W: GPG ...
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1
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0
answers
47
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How to enlist all invalid signatures?
My machine keeps prompting of "Invalid Signatures Found" at every single boot. I knew of two kernel modules that had invalid signatures, the NVIDIA display driver module and the vboxdrv module, and I ...
- 307
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0
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1k
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PKCS#7 signature not signed with a trusted key
Hi i just installed ubuntu 18.10
first boot worked fine but after I reboot
black screen with this message keep comming up
PKCS#7 signature not signed with a trusted key
I have no idea what this ...
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answers
725
views
PGP signature isn't selected when trying to sign during export of PDF-file in LibreOffice Writer
I have asked the following question on ask.libreoffice.org but nobody answered:
I have an Enigmail PGP signature that I use in Thunderbird under Ubuntu Linux. In Libre Office I can use it to sign (...
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3
votes
2
answers
10k
views
Boot Message: pkcs #7 signature not signed with a trusted key
It seems that this bug is an old one, and a really persistent one, as has been reported by several users. It was also reported that the bug has been resolved in patch updates, but, somehow, I am still ...
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