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Now type in openssl space list-standard-commands and hit enter. We will use this file later to verify certificates signed by the intermediate CA. In the below example I have combined my Root and Intermediate CA certificates to openssl create certificate chain in Linux. If we run OpenSSL without a sub-command, it opens in interactive mode. To openssl create certificate chain (certificate bundle), concatenate the intermediate and root certificates together. You'll want to be logged in to rhhost 1 with a terminal open.

The sub-commands are categorized in three areas, Standard commands, cipher commands, and message digest commands. OpenSSL comes with an SSL/TLS client which can be used to establish a transparent connection to a server secured with an SSL certificate or by directly invoking certificate file. If you perform a config without -prefix and without -openssldir. The OpenSSL toolkit offers sub-commands to create and manage encryption keys, certificate signing requests, digital certificates and also to test server and client connections. For Linux and Unix users, you may find a need to check the expiration of Local SSL Certificate files on your system. By default, the OpenSSL directory is /usr/local/ssl. The OpenSSL library also has additional requirements for normal operation at run-time.

. To use PHPs OpenSSL support you must also compile PHP -with-opensslDIR.

In a previous video, we installed OpenSSL. We can use our existing key to generate CA certificate, here ca.cert.pem is the CA certificate file: openssl req -new -x509 -days 365 -key ca.key -out ca.cert.pem. Topics covered in this book include key and certificate management. Because certificates are the same with SSL or TLS, we can still use the OpenSSL toolkit to create and manage them even if we're using Mozilla's NSS module for TLS encryption. The definitive guide to using the OpenSSL command line for configuration and testing.