OpenSSL Tool for Windows

The openssl program is a command line tool for using the various cryptography functions of  OpenSSL's  crypto library from the shell. 

Usage

Zip archive contains 64-bit binaries of the openssl tool. Cygwin and required DLLs.
 
One liner for creation of a self-signed SSL certificate:
 
 openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout selfsigned.key -out selfsigned.crt 
 
Man pages:
 

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