Updating security certificate unix
A common use for public-key cryptography is encrypting application traffic using a Secure Socket Layer (SSL) or Transport Layer Security (TLS) connection.
One example: configuring Apache to provide To set up a secure server using public-key cryptography, in most cases, you send your certificate request (including your public key), proof of your company's identity, and payment to a CA.
The CA verifies the certificate request and your identity, and then sends back a certificate for your secure server.
Alternatively, you can create your own Most Web browsers, and computers, that support SSL have a list of CAs whose certificates they automatically accept.
The process of getting a certificate from a CA is fairly easy.
A quick overview is as follows: Whether you are getting a certificate from a CA or generating your own self-signed certificate, the first step is to generate a key.
See valid certificate request formats for more information about CSR formats.
For example, Apache can provide HTTPS, Dovecot can provide IMAPS and POP3S, etc.
If a browser encounters a certificate whose authorizing CA is not in the list, the browser asks the user to either accept or decline the connection.
Also, other applications may generate an error message when using a self-signed certificate.
Open your certificate file with any text editor and copy its contents.
Please make sure you include the tags ‘Begin Certificate’ and ‘End Certificate’.