Self Signed Certificate Pem

  1. Self Signed Certificate Error
  2. Self Signed Certificate Pem File

If you haven't done so already, follow the steps in 'Trust a self-signed certificate', above Open Applications Keychain Access and select 'Certificates' in the lower-left pane Type the website into the Search field in the top-right Select the certificate entry for the website, then in the menu click File Export Items. The signature on a self-signed certificate is generated with the private key associated with the certificate's subject public key. (This proves that the issuer possesses both the public and private keys.). The certificate will expire 365 days from now. Of course you will be prompted to fill out some information before finishing the process. To make things easier to manage, you can combine both the key and cert into one file: cat eckey.pem eccrt.crt ec.pem. You can also verify information contained within the file: openssl x509 -in ec.pem. Generates a self-signed TLS certificate in PEM format, which is the typical format used to configure TLS server software. Self-signed certificates are generally not trusted by client software such as web browsers. Therefore clients are likely to generate trust warnings when connecting to a server that has a self-signed. Make a Self-Signed SSL Certificate To make a self signed certificate for your domain execute: Concatenate the DOMAIN.crt (first) and the DOMAIN.key (second) into a DOMAIN.pem file.

I always forget the order of the commands to create a new set ssl keys for a postfix server, so here it is.

For the Google-eyed visitors: The short version is at the bottom of this post.

In the following commands, replace “mail.domain.tld” with the host name of your own server.

First generate a private key for the server (supply the key with a password, and don’t forget it!):

mail:~/ssl# openssl genrsa -des3 -rand /etc/hosts -out mail.domain.tld.key 2048
266 semi-random bytes loaded
Generating RSA private key, 2048 bit long modulus
……………….+++
……+++
e is 65537 (0x10001)
Enter pass phrase for mail.domain.tld.key: <- Enter a password
Verifying – Enter pass phrase for mail.domain.tld.key: <- Enter your password

Then you create a certificate request:

mail:~/ssl# openssl req -new -key mail.domain.tld.key -out mail.domain.tld.csr
Enter pass phrase for mail.domain.tld.key: <- Enter your password
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter ‘.’, the field will be left blank.
—–
Country Name (2 letter code) [AU]:
State or Province Name (full name) [Some-State]:
Locality Name (eg, city) []:
Organization Name (eg, company) [Internet Widgits Pty Ltd]:
Organizational Unit Name (eg, section) []:
Common Name (eg, YOUR name) []:mail.domain.tld
Email Address []:

Please enter the following ‘extra’ attributes
to be sent with your certificate request
A challenge password []: <- Leave empty
An optional company name []:

Create a self signed key:

mail:~/ssl# openssl x509 -req -days 365 -in mail.domain.tld.csr -signkey mail.domain.tld.key -out mail.domain.tld.crt
Signature ok
subject=/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=mail.domain.tld
Getting Private key
Enter pass phrase for mail.domain.tld.key: <- Enter your password

Now remove the password from the private certificate (we do this, so we don’t have to enter a password when you restart postfix):

mail:~/ssl# openssl rsa -in mail.domain.tld.key -out mail.domain.tld.key.nopass
Enter pass phrase for mail.domain.tld.key: <- Enter your password
writing RSA key
mail:~/ssl# mv mail.domain.tld.key.nopass mail.domain.tld.key

PemMan

Make ourself a trusted CA:

Self Signed Certificate Error

mail:~/ssl# openssl req -new -x509 -extensions v3_ca -keyout cakey.pem -out cacert.pem -days 3650
Generating a 1024 bit RSA private key
..++++++
…………………………….++++++
writing new private key to ‘cakey.pem’
Enter PEM pass phrase: <- Enter a password
Verifying – Enter PEM pass phrase: <- Enter your password
—–
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter ‘.’, the field will be left blank.
—–
Country Name (2 letter code) [AU]:
State or Province Name (full name) [Some-State]:
Locality Name (eg, city) []:
Organization Name (eg, company) [Internet Widgits Pty Ltd]:
Organizational Unit Name (eg, section) []:
Common Name (eg, YOUR name) []:mail.domain.tld
Email Address []:

Self Signed Certificate Pem File

Now we have made ourselves a new set of keys.
Last thing to do is copy the files to a proper location and tell postfix to use the new keyfiles.
Copy the files into a proper location:

Tell Postfix where the keys are and use TLS:

Now restart postfix, cross your fingers and don’t blame me! :)

The short story:

Manage CA and self-signed certificates

You can view the list of CA and self-signed certificates that come preloaded on Pearl Nano. CA and self-signed certificates are used for server authentication if Verify server's identity is selected when 802.1x network security is configured, see Configure 802.1x network security and manage user certificates.

The self-signed certificate from Epiphan Video is selected by default. You can add more CA signed and self-signed certificates using the Admin panel, as well as delete any certificates that you've uploaded. You cannot delete any of the built-in CA certificates that came preloaded on Pearl Nano. Security certificates must be PEM encoded.

When using the Epiphan Video self-signed certificate with Pearl Nano:

  • Your web browser may warn of an untrusted certificate when you try to access Pearl's web-based Admin panel. You can dismiss the warning and continue to the Admin panel for your device.
  • Certain low and medium-level results are expected when scanning the network for vulnerabilities while Pearl Nano is connected and an active Admin panel session is in progress. Contact Epiphan Video Support for more information.

Manage CA and self-signed certificates on Pearl Nano using the Admin panel

  1. Login to the Admin panel as admin, see Connect to Admin panel.
  1. From the Configuration menu, select Security. The Security configuration page opens.
  2. Under CA certificates, click the arrow head to expand the list of built-in CA and self-signed certificates that came preloaded on Pearl Nano.
  1. To upload a new CA or self-signed certificate, click Choose File and select the certificate you want to upload. Then click Apply. The uploaded certificate is added to a list of user uploaded CA certificates.
  2. To delete a CA or self-signed certificate that you've uploaded, click Choose File and select the certificate you want to delete from the list. Then click Delete. When you're done, click Apply.
  3. Reboot Pearl Nano when prompted. After the system has finished rebooting, log back in to the Admin panel as admin and verify that all changes were applied.