Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [certificates]

Questions about signed certificates and the processes involved (Creation, signing, accepting, viewing)

0
votes
0answers
7 views

Broke ca-certificates on 18.04

During an update to Ubuntu 18.04 something went wrong and now I do now seem to have working certificates anymore. I tried to solve this by running sudo apt-get install --reinstall ca-certificates. But ...
1
vote
0answers
16 views

SHA 1 with RSA for ssl certificate [closed]

I using SHA 1 with RSA encryption for ssl certificate is secure? As i know, sha 1 is not secure, but if we use RSA with sha1, still it will be an issue? Please suggest if any security issues exist.
0
votes
0answers
23 views

Add all Firefox Certificates to Ubuntu 18.04 trust store

What is the best way to add all common used Intermediate Certificates in Ubuntu 18.04+, and keep them up2date with apt? I mean typical intermediate certs signed from Digicert, Comodo, etc. It seems ...
0
votes
0answers
31 views

can I export VPN certificate from OSX to Ubuntu?

I have configuration file for VPN that works on OSX with Tunnelblick. As far as I understand, the same VPN certificate can be used from different machines. So I copied the configuration file the *....
0
votes
0answers
80 views

wget fails by a certificate problem

Same problem of wget interrupted by a certificate problem: After do-release-upgrade from 16.04 to 18.01 Failed to connect to https://changelogs.ubuntu.com/meta-release-lts. Check your Internet ...
0
votes
1answer
114 views

CA root install issue on Ubuntu 16.04 LTS Server

I am setting up nginx reverse proxy on Ubuntu 16.04 LTS Server for Web-Server. There will three different Services running on Ubuntu. Services will communicate each other using API calls. Similarly ...
0
votes
0answers
15 views

How to bypass gnome nextcloud integration tls error

Whenever I set up nextcloud integration on ubuntu 18.04 the nextcloud folder shows an error Invalid TLS Certificate when I click on it. Is there any way to fix this without the admin adding a ...
0
votes
0answers
250 views

Wifi connection: CA certificate and system-connections file

My problem is closely related to this question. Unfortunately the answer given there is not an anwer at all: it says "do that and that" but it doesn't say what it is supposed to happen after the ...
0
votes
0answers
17 views

Is it feasible to sign Deb package using a cert issued by Trusted CA or signing with a GPG Key Pair Signed by a Trusted CA

I am trying to sign our custom deb install packages so that the end users can verify the signature before installing it. Using GPG Key pair generated locally and used for signing, requires the end ...
1
vote
2answers
478 views

Can't install docker, ca problems with curl

I am trying install docker from there instructions: https://linuxconfig.org/how-to-install-docker-on-ubuntu-18-04-bionic-beaver I am running the command: $ sudo curl -fsSL https://download.docker....
0
votes
1answer
32 views

how to revoke x.509 certificates?

I recently accepted some x.509 certificates on my Ubuntu 16.04 because of open-connect and I wonder how can I delete or revoke them on my system. My problem is I have no idea what were the details of ...
0
votes
0answers
36 views

DocumentRoot pointing to wrong directory Ubuntu Server 16.04.3 [duplicate]

I have just created a new VM using Ubuntu Server 16.04.3. First i created a new directory: sudo mkdir /var/www/domain.com/html Then i created a file: sudo nano /var/www/domain.com/html/index.php ...
1
vote
1answer
124 views

wget interrupted by a certificate problem

I wanted to download a file using wget https://curl.haxx.se/download/archeology/curl-7.16.2.tar.gz. Done that from a friend's PC and got no errors. However, when trying to do so from my PC, on which ...
0
votes
0answers
18 views

Unable to generate certificate

I'm trying to generate a certificate for a certain server following this lab, but the command that generates a CRT file out of the CSR doesn't seem to work. See the image below The command is unable ...
0
votes
0answers
13 views

ASCII-Cordiet PEM-CErtificate

how can i convert my .pem certificate in ascii-code ? I downloaded the ascii to text app and copy pasted the .pem (text) which was changed to hexadecimal. When i try to upload the ascii in ...
0
votes
1answer
86 views

installing a wildcard Certificate on a subdomain running on ubuntu

i have tried for a full day in vain to install a wildcard Certificate on owncloud (which is a subdomain and running on obuntu 16.04 with apache2) Any one who can help me here with concrete steps? ...
0
votes
1answer
1k views

Ubuntu 18.04 certificate validation failure

On a (relatively) fresh installation of Ubuntu 18.04, I'm experiencing failures related to certificate validation. First the Dropbox installer could not download the binary client. I also notice that ...
0
votes
0answers
603 views

Messed-up with ca-certificates/ How to restore back to default

Recently I tried to add own ssl for https support in localhost which I couldn't achieve but now i am getting all these error with certificates With command git push fatal: unable to access 'https://...
0
votes
2answers
414 views

Adding a certificate to Ubuntu

I am having with an App that is not serving the intermediate certificate to the clients. As a workaround I wanted to add the intermediate certificate (Let's Encrypt X3) to the ca-certificates and ...
0
votes
0answers
456 views

SSL certificate error with curl

Reciently I started to having trouble using curl with SSL (it gives cert error). Packages are up to date. Tried doing "update-ca-certificates --fresh" without success. # curl https://github.com/ curl:...
0
votes
0answers
202 views

ERR_SSL_VERSION_INTERFERENCE error when using fiddler with mono on ubuntu

I'm trying to intercept network requests using fiddler on Ubuntu 17.10 and mono 4.6.2. As per instructions given here I've also imported certificates by running command mozroots --import --sync. But ...
1
vote
1answer
188 views

Set company certificate as Trusted

My company gave me a file company_CA.crt that I need to use to access one of our customers website. When I tried to add it on macOS, all I had to do was to click on the file, and then after imported, ...
0
votes
0answers
38 views

Certificate on server

I have installed Mahara (Eportfolio system) on Ubuntu 16.04. I need to install a ssl certificate to allow outside access to Mahara. Can anyone advise on the best way to manage the certificate? Is ...
0
votes
0answers
29 views

Unable to install certbot on Ubuntu 16 [duplicate]

According to these instructions for Ubuntu 16, I'm doing this: sudo apt-get update sudo apt-get install software-properties-common sudo add-apt-repository ppa:certbot/certbot sudo apt-get update ...
0
votes
0answers
111 views

Issue with SSL certificates, unable to install Java or add PPA repo

I just get a new Ubuntu virtual machine (14.04) from Here and one of the first things I tried to do was to install the JDK 8, starting to add the PPA repo: sudo add-apt-repository -y ppa:webupd8team/...
0
votes
0answers
23 views

Certificates for eid-viewer not found in ubuntustudio 16.04

I am running ubuntustudio 16.04 LTS I have a Digipass VASCO DP905 E1.1. card-reader. I could use it to see my ID and log in on websites. In autumn 2017, I realised it didn’t work anymore. When I ...
0
votes
0answers
28 views

How do I request a CA+local certificate from CA?

I have a CA server, and I've already got one machine with CA+local certificates from said CA. However, I don't know how to do the same for my Ubuntu machine. I can use openssl req -out CSR.csr -new -...
0
votes
0answers
38 views

CA Cert Issues with Curl in Ubuntu 14.04.1

Recently email from a Keystone JS app stopped sending transactional email using Mailgun. Mailgun says: "This may be possibly due to our SSL certification renewal, which was updated on Jan 22, 2018. ...
1
vote
1answer
3k views

importing root CA certificate in linux

Maybe this is a duplicate, but i cannot find the answer. Windows CA authorities provide their root certificates in several forms: The certificate by itself and full chain, each can be downloaded in 2 ...
0
votes
0answers
48 views

How do I manage the ssl certs (pem/key) for vsftpd?

I am working on setting up my first ftp and I am using the ssl certs that were built in and I am wondering if I can find/create personalized certs. How would this affect me and will making a different ...
0
votes
0answers
187 views

Unable to load Ubuntu on Toshiba Laptop

Error: 16.0944491 problem loading UEFI:db X.509 certificate (-65) This error message occurred while trying to load Ubuntu on a Toshiba laptop. What does it mean?
0
votes
0answers
290 views

SSL connection to an ubuntu server

I just set up an ubuntu server on a VPS to learn some SSL stuff. I tried to connect to it using openssl using the command: openssl s_client -connect xxx.xxx.xxx.xxx:443 and it just returns: connect:...
0
votes
0answers
367 views

Install Eclipse Oxygen on Ubuntu 16.04 Certificate Problem

I tried to install Eclipse Oxygen using the Oomph installer contained in the download. However during the installation process it asks whether i trust two certificates. When I clicked on details it ...
1
vote
0answers
441 views

Import a certificate in Evolution mail client

How do I import a certificate? The help file is very confusing. I want to be able to encrypt some of my emails. Managing S/MIME certificates Certificates allow you to communicate with others ...
0
votes
0answers
213 views

OpenSSL certificate problem

I have a problem when an Android app tries to connect. Background: The company that I work with, developed an app. When I tried in a web browser I see the certificate, but in the app, I couldn't even ...
0
votes
0answers
334 views

NSS Version Update For Ubuntu 16.04

Our root certificate added to NSS version which is 3.30.2 but on Ubuntu-16.04 the version of NSS is 3.28.4 thus our certificate appear as untrusted on browsers and we have receiving complaint. This ...
0
votes
1answer
1k views

viewer for X.509 certificate

Previously X.509 certificates would open properly. I do not know what changed but currently they are opening as text files and shown in gedit. How can I revert to the original behaviour? Edit: I was ...
1
vote
0answers
20 views

Can't get my SSL get to work on Apache2 [duplicate]

default-ssl.conf: <IfModule mod_ssl.c> <VirtualHost _default_:443> ServerAdmin webmaster@localhost ServerName www.server.at ServerAlias server.at ...
0
votes
0answers
262 views

Nginx reverse proxy for Apache: does Apache need SSL certificates?

I'm setting up Nginx as a reverse proxy for Apache2, in order to run a webmail service and a WordPress site in a secure environment. Does Apache need to know about the SSL certificates, or is it ...
0
votes
0answers
145 views

“Key usage violation in certificate has been detected” Error after upgrade to 17.10

I upgraded ubuntu to 17.10 After that, when i want to connect to my server with openconnect, i get this error: POST https://MYSERVERIP:2693/ Connected to MYSERVERIP:2693 Using client certificate '...
0
votes
1answer
677 views

Apache2 - SSH - LetsEncrypt SSL - Certbot - Proxy - Manual Setup: How to achieve this?

I have a website running successfully on Apache port 80 HTTP (on a temporary subdomain). I am following this tutorial in order to setup an SSL certificate on Apache2, Ubuntu using LetsEncrypt with ...
0
votes
1answer
210 views

Caldav (and carddav) compatible client with support for TLS Client certificate authentication

I am in search of a Caldav (and carddav) compatible client with support for TLS Client certificate authentication? The solution with Thunderbird + Lightning + SoGO connector I suggested in my answer ...
0
votes
1answer
61 views

Combining Certs Together? Ubuntu 16.04?

Is there anyway I can combine certificates together? I went to my Universities IT Help Desk about not being able to connect to their WPA2 Enterprise Wifi and they handed me 4 Certs Intermediate 1.crt,...
0
votes
1answer
331 views

local nginx https server send error certificates: mediarouter.home

I set up a website server on my system via nginx, When I visit my site remotely, everything goes right, but when I visit this site locally(via write domain name in /etc/hosts), nginx will send wrong ...
0
votes
1answer
162 views

Which certificate do I add to the trusted store in order to add my device certificate to the trusted store?

I am troubleshooting an issue with my VPN client which lists the troubleshooting steps at https://kb.pulsesecure.net/articles/Pulse_Secure_Article/KB40200. These instructions just use an ambiguous ...
1
vote
0answers
75 views

Franz messaging app - untrusted CA

I've recently moved from Mint to Ubuntu and encountered a problem. I'm using Franz to manage my multiple messenger accounts. One of them is my employer's Rocket Chat. At first Rocket Chat didn't ...
1
vote
2answers
4k views

How do you set up SSL certificates for additional ports in Apache? [closed]

Simple question, I just wanted to know how to install SSL certificates in other ports in a webserver. I'm trying to get a web application to be able to have a valid SSL certificate. I use apache2. I'...
2
votes
0answers
359 views

Open encrypted PDF in ubuntu

I have a pdf which is encrypted using a public key algorithm. I also have the corresponding certificate in *.p12 format. I am able to open this pdf in windows after installing this certificate (using ...
0
votes
1answer
381 views

Create, sign and deploy certificates in Ubuntu 14 system using certtool

I'm trying to learn about certificate generation, signing and what it takes to become a CA. I am developing a HTTP proxy, which will be a middle proxy between browser and actual web server, and it ...
0
votes
2answers
782 views

How do I create a local CA for local HTTPS certificates?

I am running local sites via Nginx with self-signed HTTPS certificates. However, in GNOME Web (previously known as Epiphany) I still get a security warning because there is no certificate authority ...