How do I extend a self-signed certificate expiration date?

Posted on by Muna Meyer

How do I extend a self-signed certificate expiration date?

Export the private key (with keytool & openssl or through the keystore-explorer UI, which is much simpler) Make a certificate signing request (with keytool or through the keystore-explorer UI) Sign the request with the private key (i.e. self-signed) Import the certificate in the store to replace the old (expired) one.

How do I assign a self-signed certificate?

In IIS Manager, do the following to create a self-signed certificate:

  1. In the Connections pane, select your server in the tree view and double-click Server Certificates.
  2. In the Actions pane, click Create Self-Signed Certificate.
  3. Enter a user-friendly name for the new certificate and click OK.

How do I check if my SSL certificate is expired Linux?

Check the expiration date of an SSL certificate

  1. Open a UNIX command line window.
  2. Perform a query such as, openssl s_client -servername -connect 2>/dev/null | openssl x509 -noout -dates . The expiration date appears in the response as notAfter=

How do I add a certificate to the trusted root in Linux?

Linux (Ubuntu, Debian)

  1. Copy your CA to dir /usr/local/share/ca-certificates/
  2. Use command: sudo cp foo.crt /usr/local/share/ca-certificates/foo.crt.
  3. Update the CA store: sudo update-ca-certificates.

How long can a self-signed certificate last?

Self-signed certificates cannot be revoked. Self-signed certificates never expire.

How long is a self-signed certificate valid?

Purpose. By default, All the self-signed certificate only valid for 90 days, then you will need to renew them every 90 days, which is very troublesome.

How do I remove a self-signed SSL certificate in Linux?

Replacing the self-signed certificate for Ubuntu installations:

  1. Copy the certificate to the system certificate location:
  2. Copy the private key file to the system key location:
  3. Edit the NGINX configuration at /etc/nginx/snippets/ssl-cert.
  4. Restart the NGINX server:

How do I remove a self-signed root certificate?

Instructions for Android

  1. Open the Settings application, and select the Security option.
  2. Navigate to the Trusted Credentials.
  3. Tap on the certificate that you would like to delete.
  4. Tap Disable.

How do I create a self signed trusted certificate?

Adding the self-signed certificate as trusted to a browser

  1. Select the Continue to this website (not recommended) link.
  2. Click Certificate Error.
  3. Select the View certificates link.
  4. Select the Details tab, and then click Copy to File to create a local copy of the certificate.
  5. Follow the Wizard instructions.

How do I add a self-signed certificate to trusted root?

Import the self-signed certificate to the client Windows computer.

  1. On the Windows computer, start MMC (mmc.exe).
  2. Add the Certificates snap-in for the computer account and manage certificates for the local computer.
  3. Import the self-signed certificate into Trusted Root Certification Authorities > Certificates.

How do I generate a self signed certificate?

You will need to have OpenSSL installed.

  • Open a command prompt window and go to the directory you created earlier for the public/private key file. For example: C:>cd Test C:Test>
  • Enter the path of the OpenSSL install directory,followed by the self-signed certificate algorithm.
  • Follow the instructions that appear in the screen.

    • How to create a self signed certificate?

    – Provide the Device ID that matches the subject name of your two certificates. – Select the X.509 Self-Signed authentication type. – Paste the hex string thumbprints that you copied from your device primary and secondary certificates. Make sure that the hex strings have no colon delimiters.

    How do I install a self signed certificate?

    Open IIS manager (inetmgr) on your web server.

  • Click on the server node (one of the root nodes) in the left panel,and double click “Server certificates”.
  • Click on “Create Self-Signed Certificate” on the right panel and type in anything you want for the friendly name

    • How to fix self signed certificate warnings?

    Open the Windows Control Panel.

  • Select Internet Options.
  • Select the Contents tab.
  • Click the Clear SSL State button.