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.

LibreSSL is a version of the TLS/crypto stack forked from OpenSSL in 2014, with goals of modernizing the codebase, improving security, and applying best practice development processes.

 

Usage

Zip archive contains 64-bit binaries of the openssl tool from LibreSSL, Cygwin and required DLLs plus man pages which are also available here: openssl openssl.cnf
 
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 
 

OpenSSL tool 1.8.0

release date: 
Wed, 11/22/2023
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2023

OpenSSL tool 1.7.1

release date: 
Sun, 09/17/2023
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2023

OpenSSL tool 1.7.0

release date: 
Tue, 07/11/2023
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2023

OpenSSL tool 1.6.1

release date: 
Sat, 01/21/2023
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2023

OpenSSL tool 1.6.0

release date: 
Sun, 11/20/2022
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2022

OpenSSL tool 1.5.0

release date: 
Sun, 12/12/2021
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2021

OpenSSL tool 1.4.0

release date: 
Sat, 09/18/2021
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2021

OpenSSL tool 1.3.0

release date: 
Tue, 03/09/2021
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2021

OpenSSL tool 1.2.0

release date: 
Tue, 12/29/2020
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2020

OpenSSL tool 1.1.0

release date: 
Fri, 10/16/2020
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2020

Release announcements