Questions tagged [self-signed]

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Booting self signed Kernel: UUID=xxx does not exist. Dropping to a shell

A I have to run the latest Kernel on my Acer Swift 3 (SF314-42-R2UX) to make suspend work I downloaded Kernel 5.15.13-051513 form mainline repository an signed it following the instructions here: ...
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Self-signed kernel loading stopped working after upgrade to 21.04

I have a strange problem with secure boot and self-signed kernels. On 20.10 I was able to boot (everything with Secure Boot) both canonical-signed and self-signed kernels. After upgrade to 21.04 ...
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2 answers
3k views

Signing custom compiled kernel for Secure Boot

I am following steps given here to generate keys in order to sign a copy of kernel I compiled myself. However, midway through the process, when I try to verify that "the master certificate is signed ...
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  • 395
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Set Self Signed Certificate for single VirtualHosts

I generated a self signed cert for my local development server, following this guide https://www.digitalocean.com/community/tutorials/how-to-create-a-self-signed-ssl-certificate-for-apache-in-ubuntu-...
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3 votes
2 answers
2k views

How do I connect my NextCloud account to Ubuntu using a self-signed certificate?

I'm trying to connect my NextCloud account to Ubuntu, so that I can take advantage of the calendar integration and other features. Right now I'm running my own NextCloud server with a self-signed ...
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2 votes
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190 views

LivePatch & secure boot self-signed kernel modules

It seems that LivePatch works with SecureBoot, but what about self-signed kernel modules? If a kernel patch is (auto)applied via livepatch, and I am using secure boot, do I have to re-sign the kernel ...
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UEFI Secure Boot - unable to sign VirtualBox kernel modules - sign-key does nothing

I have a Dell XPS 13 9360, which I'm trying to get VirtualBox running on. I've followed guides to generate a MOK signing key, such as Could not load 'vboxdrv' after upgrade to Ubuntu 16.04 (...
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2 votes
1 answer
6k views

unable to verify the first certificate

I use openssl to create a self signed CA cert on ubuntu gnome 16.04, and use this CA cert to sign a cert for postfix and httpd, but when using tls to connect postfix, the command was: openssl ...
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16 votes
2 answers
6k views

How to sign files with Ubuntu command-line tools and my own keys?

I want to sign some Python code files I wrote, because they are plug-in modules for one of my projects. For distributing it, I want that the user can be sure a plug-in is verified and safe (because ...
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  • 101k
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1 answer
2k views

Problems using Murmur with self-signed certificate

I made my own CA using openssl and sign other certificates using that Root certificate. I signed a certificate using my CA for use with my Murmur server, and have the following in /etc/mumble-server....
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