|Project Name||Stars||Downloads||Repos Using This||Packages Using This||Most Recent Commit||Total Releases||Latest Release||Open Issues||License||Language|
|Openssl||22,714||225||20 hours ago||41||June 21, 2023||2,320||apache-2.0||C|
|TLS/SSL and crypto library|
|An open source cybersecurity protocol for syncing decentralized graph data.|
|Kcptun||13,428||2||2 months ago||11||April 01, 2021||113||mit||Go|
|A Stable & Secure Tunnel based on KCP with N:M multiplexing and FEC. Available for ARM, MIPS, 386 and AMD64。N:M 多重化と FEC を備えた KCP に基づく安定した安全なトンネル。 N:M 다중화 및 FEC를 사용하는 KCP 기반의 안정적이고 안전한 터널입니다. Un tunnel stable et sécurisé basé sur KCP avec multiplexage N:M et FEC.|
|Cryptomator||9,786||a day ago||257||gpl-3.0||Java|
|Multi-platform transparent client-side encryption of your files in the cloud|
|Staticrypt||5,588||1||6||2 months ago||37||June 13, 2023||8||mit||HTML|
|Password protect a static HTML page, decrypted in-browser|
|Awesome Cryptography||4,934||7 days ago||20||other|
|A curated list of cryptography resources and links.|
|S2n Tls||4,305||2||17 hours ago||55||November 16, 2022||448||apache-2.0||C|
|An implementation of the TLS/SSL protocols|
|Gmssl||4,216||8 days ago||6||February 23, 2023||187||apache-2.0||C|
|End-To-End is a crypto library to encrypt, decrypt, digital sign, and verify signed messages (implementing OpenPGP)|
OpenSSL is a robust, commercial-grade, full-featured Open Source Toolkit for the Transport Layer Security (TLS) protocol formerly known as the Secure Sockets Layer (SSL) protocol. The protocol implementation is based on a full-strength general purpose cryptographic library, which can also be used stand-alone.
OpenSSL is descended from the SSLeay library developed by Eric A. Young and Tim J. Hudson.
The official Home Page of the OpenSSL Project is www.openssl.org.
The OpenSSL toolkit includes:
libssl an implementation of all TLS protocol versions up to TLSv1.3 (RFC 8446).
libcrypto a full-strength general purpose cryptographic library. It constitutes the basis of the TLS implementation, but can also be used independently.
openssl the OpenSSL command line tool, a swiss army knife for cryptographic tasks, testing and analyzing. It can be used for
Source code tarballs of the official releases can be downloaded from www.openssl.org/source. The OpenSSL project does not distribute the toolkit in binary form.
However, for a large variety of operating systems precompiled versions of the OpenSSL toolkit are available. In particular, on Linux and other Unix operating systems, it is normally recommended to link against the precompiled shared libraries provided by the distributor or vendor.
Although testing and development could in theory also be done using the source tarballs, having a local copy of the git repository with the entire project history gives you much more insight into the code base.
The official OpenSSL Git Repository is located at git.openssl.org. There is a GitHub mirror of the repository at github.com/openssl/openssl, which is updated automatically from the former on every commit.
A local copy of the Git Repository can be obtained by cloning it from the original OpenSSL repository using
git clone git://git.openssl.org/openssl.git
or from the GitHub mirror using
git clone https://github.com/openssl/openssl.git
If you intend to contribute to OpenSSL, either to fix bugs or contribute new features, you need to fork the OpenSSL repository openssl/openssl on GitHub and clone your public fork instead.
git clone https://github.com/yourname/openssl.git
This is necessary because all development of OpenSSL nowadays is done via GitHub pull requests. For more details, see Contributing.
After obtaining the Source, have a look at the INSTALL file for detailed instructions about building and installing OpenSSL. For some platforms, the installation instructions are amended by a platform specific document.
Specific notes on upgrading to OpenSSL 3.0 from previous versions can be found in the ossl-guide-migration(7ossl) manual page.
The manual pages for the master branch and all current stable releases are available online.
There is a Wiki at wiki.openssl.org which is currently not very active. It contains a lot of useful information, not all of which is up-to-date.
OpenSSL is licensed under the Apache License 2.0, which means that you are free to get and use it for commercial and non-commercial purposes as long as you fulfill its conditions.
See the LICENSE.txt file for more details.
There are various ways to get in touch. The correct channel depends on your requirement. See the SUPPORT file for more details.
If you are interested and willing to contribute to the OpenSSL project, please take a look at the CONTRIBUTING file.
A number of nations restrict the use or export of cryptography. If you are potentially subject to such restrictions, you should seek legal advice before attempting to develop or distribute cryptographic code.
Copyright (c) 1998-2023 The OpenSSL Project Authors
Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson
All rights reserved.