update-ca-certificates is a program that updates the directory /etc/ssl/certs to hold SSL certificates and generates ca-certificates. crt, a concatenated single-file list of certificates. … Each line gives a pathname of a CA certificate under /usr/share/ca-certificates that should be trusted.

What is CA certificate?

A certificate authority (CA), also sometimes referred to as a certification authority, is a company or organization that acts to validate the identities of entities (such as websites, email addresses, companies, or individual persons) and bind them to cryptographic keys through the issuance of electronic documents …

Where are CA certificates in Linux?

The CA certificates have their own directory, /etc/pki/CA/certs and /etc/pki/CA/private .