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How to invoke openssl from the command line?


Asked by Selah Estes on Dec 09, 2021 FAQ



When you invoke OpenSSL from the command line, you must pass the name of a sub-program to invoke such as ca, x509 , asn1parse, etc. However, if you want information on these sub-programs, the OpenSSL man page isn't going to be much help.
Subsequently,
Open up PowerShell and run the below command. This command downloads a sample configuration file from MIT and saves it as openssl.cnf in the current working directory. You can now open up the openssl.cnf file and you should see something that looks like below. The downloaded configuration will work as-is for now.
In respect to this, The general syntax for calling openssl is as follows: $ openssl command [ command_options ] [ command_arguments ] Alternatively, you can call openssl without arguments to enter the interactive mode prompt. You may then enter commands directly, exiting with either a quitcommand or by issuing a termination signal with either Ctrl+Cor Ctrl+D.
One may also ask,
Viewing your SSL Certificate information with OpenSSL commands To view the contents of any X.509 certificate use the following command: openssl x509 -text -in yourdomain.crt -noout Verifying Keys match with OpenSSL commands
In fact,
The second way of requesting the help menu for a particular command is by using the first option in the output shown above, namely openssl command -help. Both commands will yield the same output; the help menu displayed will be exactly the same.