A local copy of OpenSSL from GitHub

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Pauli 5b286641ef apps: avoid memory overrun. NULL terminate the built in "help" argv array to avoid reading beyond the end. Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com> (Merged from https://github.com/openssl/openssl/pull/12258)		3 years ago
.github	Add github sponsor button	3 years ago
Configurations	Configure DEPs for FIPS provider on AIX.	3 years ago
VMS	Following the license change, modify the boilerplates in last few	5 years ago
apps	apps: avoid memory overrun.	3 years ago
boringssl@2070f8ad91	Update ossl_config.json for later BoringSSL commit	6 years ago
crypto	evp_rand: documentation	3 years ago
demos	Cleanup cert config files for tests	3 years ago
dev	dev/release.sh: Add --reviewer to set reviewers	3 years ago
doc	Fix some man page typos	3 years ago
engines	Update copyright year	3 years ago
external/perl	Update the bundled external perl module Text-Template to version 1.56	4 years ago
fuzz	Improve ossl_cmp_msg_check_received() and rename to ossl_cmp_msg_check_update()	3 years ago
gost-engine@30860f9403	Update gost-engine submodule to match EVP_MAC renaming	3 years ago
include	fips rand: DRBG KAT self test updates to provider model.	3 years ago
krb5@890ca2f401	Update the krb5 submodule	3 years ago
ms	Unify all assembler file generators	4 years ago
os-dep	Move Haiku configuration to separate config file to denote	7 years ago
providers	include source root directory via -I for libnonfips.a	3 years ago
pyca-cryptography@09403100de	Update the pyca-cryptography submodule	5 years ago
ssl	Don't attempt to duplicate the BIO state in SSL_dup	3 years ago
test	test: add test for generation of random data in chunks.	3 years ago
tools	Following the license change, modify the boilerplates in util/, tools/	5 years ago
util	evp_rand: documentation	3 years ago
.gitattributes	Developer scripts: Release script	3 years ago
.gitignore	Add evp_extra_test2 to .gitignore	3 years ago
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.travis-apt-pin.preferences	Fix travis clang-3.9 builds	6 years ago
.travis-create-release.sh	Remove all 'make dist' artifacts	5 years ago
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AUTHORS.md	Fix issues reported by markdownlint	3 years ago
CHANGES.md	The EVP_MAC functions have been renamed for consistency. The EVP_MAC_CTX_*	3 years ago
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Configure	Add ACVP fips module tests	3 years ago
FAQ.md	doc: introduce some minimalistic markdown without essential changes	3 years ago
HACKING	A very brief explanation of how to add custom functions to OpenSSL.	4 years ago
INSTALL.md	DOC: Fix link to test/README.external in INSTALL.md	3 years ago
LICENSE	Change license to the Apache License v2.0	5 years ago
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README.md

Welcome to the OpenSSL Project

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.

Overview
Download
Build and Install
Documentation
License
Support
Contributing
Legalities

Overview

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
- creation of key parameters
- creation of X.509 certificates, CSRs and CRLs
- calculation of message digests
- encryption and decryption
- SSL/TLS client and server tests
- handling of S/MIME signed or encrypted mail
- and more...

Download

For Production Use

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.

For Testing and Development

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.

Build and Install

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, as well as known issues are available on the OpenSSL wiki.

Documentation

Manual Pages

The manual pages for the master branch and all current stable releases are available online.

Wiki

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.

License

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 file for more details.

Support

There are various ways to get in touch. The correct channel depends on your requirement. see the SUPPORT file for more details.

Contributing

If you are interested and willing to contribute to the OpenSSL project, please take a look at the CONTRIBUTING file.

Since 2016, development takes place in public on the GitHub open source platform. The OpenSSL Project Pages at openssl.github.io are a valuable source of information if you want to get familiar with our development process on GitHub.

Legalities

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.