Questions tagged [signature]
Use for questions related to digital signatures
81 questions
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U-Boot signature verification using ECDSA fails
I'm trying to use ECDSA (prime256v1) for signature verification in U-Boot (git tag "v2025.10"). I used the sample configuration from Verified Boot on the Beaglebone Black as a template. ...
- 11
-3
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1
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How to fix the update and upgrade in ParrotOS
How do I fix this error?
GPG error: https://deb.parrot.sh/parrot parrot InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7A8286AF0E81EE4A
E: ...
7
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2
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882
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apt seems to be ignoring Signed-By
I'm trying to install AviSynth+ from yuuki-deb.x86.men.
$ cat /etc/apt/sources.list.d/yuuki-deb.sources
Types: deb
URIs: http://yuuki-deb.x86.men/
Suites: bullseye
Components: main
Signed-By: /usr/...
- 722
0
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284
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How do you generate a keyring file for a local APT repository?
Based on this answer, I followed this guide to create a local apt repository.
Now I an specifying that debootstrap use my repository with file:path/to/my/apt/repo.
When debootstrap runs, I get this:
I:...
- 111
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1
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722
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apt rejects sha1 and rsa1024 signatures after upgrade to version >= 2.9.19 - when GnuPG is replaced with Sequoia
After upgrading apt to version >= 2.9.19 SHA1 and RSA1024 signatures are rejected.
There is a section in its changelog which says:
apt (2.9.19) unstable; urgency=medium
Replace GnuTLS and gcrypt ...
- 690
0
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1
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53
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File signing with minimum hassle for the verifier
Suppose I want to publish (or send to someone) a file. I also want the recipients of it to be able to verify that any further updates to it come from the same source/author as the original.
The ...
- 469
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Solaris 10 elfsign: how to create a correct certificate to sign a binary?
On Solaris11 is possible to use certificates made with openssl, on Solaris 10 is different
elfsign sign -c solaris10.crt -k solaris10.key -e libeel-2.so
exit with error and state of exit is 4 (...
- 14.5k
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How to verify vc_redist.x64.exe with osslsigncode?
osslsigncode verify VirtualBox-7.1.0-164728-Win.exe: Functional.
osslsigncode verify vc_redist.x64.exe: Broken.
Why? How to fix?
Full logs below.
Debian 12.
Functional:
osslsigncode verify VirtualBox-...
- 1,976
2
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1
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gpg: Can't check signature: No public key | Debian Raspberry Pi Images
I am having some issue verifying the Raspberry Pi image for the RPI 2B of Debian.
Steps followed:
Download Files:
wget https://raspi.debian.net/tested/20231109_raspi_2_bookworm.img.xz && wget ...
0
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1
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"error: /boot/vmlinuz-6.6.9-amd64 has invalid signature" with secure boot on in Kali Linux
When I try to run my Kali Linux system with secure boot on, GRUB returns error: /boot/vmlinuz-6.6.9-amd64 has invalid signature. I don't want to turn off secure boot. I have followed the directions ...
- 832
0
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1
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533
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apt-get update prevented by signature failure
I am trying to apt update on my WSL
sudo apt-get update
but getting this error.
Err:6 https://linux.qmk.fm focal InRelease
The following signatures couldn't be verified because the public key is not ...
- 3
0
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1
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74k
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error: msys: signature from "XXX" is invalid
How can I fix the error in the terminal on Arch Linux below?
error: msys: signature from "David Macek <[email protected]>" is invalid
This happen when I execute command.
sudo ...
- 3
0
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1
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Signing Nvidia drivers for Secure Boot - Nvidia module location
I want to sign my nvidia driver so I can use it with Secure Boot.
I'm trying to follow these instructions for nvidia driver:
https://wiki.debian.org/SecureBoot#Using_your_key_to_sign_modules_....
- 133
2
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1
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305
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Convert encrypted and signed to just signed PGP message
Suppose Bob got a message from Alice encrypted with his public key and signed with her private key. Now he wants to prove to Charlie that he got a message from her with this exact content. The message ...
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2
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0
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System update supporting IMA signatures
I'm trying to harden a Linux system by using IMA and want to apply digital signatures to binaries. I'm wondering if there is a package manager supporting the IMA signatures so that the binaries can be ...
- 141