... You can read more about the available options and view sample configurations in the man pages. OpenSSL also has an active GitHub repository with examples too. Any errors are ignored. openssl x509 -req -in req.pem -extfile openssl.cnf -extensions v3_usr \ -CA cacert.pem -CAkey key.pem -CAcreateserial Set a certificate to be trusted for SSL client use and change set its alias to "Steve's Class 1 CA" openssl x509 -in cert.pem -addtrust clientAuth \ -setalias "Steve's Class 1 CA" -out trust.pem NOTES. OpenSSL is a cryptography toolkit implementing the Transport Layer Security (TLS v1) network protocol, as well as related cryptography standards.. The openssl program is a command line tool for using the various cryptography functions of openssl's crypto library from the shell.. The configuration file format is documented in the conf(5) manual page.. OPENSSL_no_config() disables configuration. OPENSSL_config() configures OpenSSL using the standard openssl.cnf configuration file name using config_name.If config_name is NULL then the default name openssl_conf will be used. openssl req -x509 -newkey rsa:2048 -keyout key.pem -out req.pem. $ openssl asn1parse ". Tuesday April 17th, 2018 at 08:03 PM. [root@centos8-1 tls]# openssl req -new -x509 -days 3650 -passin file:mypass.enc -config openssl.cnf -extensions v3_ca -key private/cakey.pem -out certs/cacert.pem You are about to be asked to enter information that will be incorporated into your certificate request. OpenSSL is a cryptography toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) network protocols and related cryptography standards required by them. Generating RSA Key Pairs. The openssl program is a command line tool for using the various cryptography functions of OpenSSL's crypto library from the shell. More information on creating RSA keys is available on the man page of genrsa, and more information on creating Certificate Signing Requests is available in the man page of req. Check man req for more information. What you are about to enter is what is called a Distinguished Name or a DN. It can be used for Here we only illustrate the use of the following OpenSSL commands: req -- The req command primarily creates and processes certificate requests in PKCS#10 format. Further calls to OPENSSL_config() will have no effect. This can also be done in one step.