Go to file
Pauli c37184f502 remove redundant free of NULL
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21964)
2023-09-27 17:22:54 +01:00
.ctags.d util/ctags.sh: a script for generating tags file with expanding macros 2023-05-18 13:29:43 +02:00
.github os zoo ci 2023-09-20 08:17:17 +10:00
apps adding -outpubkey option to genpkey 2023-09-24 20:51:42 +02:00
cloudflare-quiche@7ab6a55cfe Update Cloudflare Quiche to fix a build issue 2023-08-29 14:51:33 +02:00
Configurations Regexp modifier "r" needs perl 5.14; OpenSSL should build with 5.11, so do not use the "r" shortcut. 2023-09-11 07:45:38 +10:00
crypto Support all NULL-syntax X.509v3 extensions 2023-09-25 15:12:04 -04:00
demos Bad function definition 2023-09-11 10:15:30 +02:00
dev doc: add the migration guide to the new guide series 2023-08-23 18:17:53 +01:00
doc Add documentation for the BIO_ADDR_copy() function 2023-09-25 07:46:45 +10:00
engines "foo * bar" should be "foo *bar" 2023-09-11 10:15:30 +02:00
external/perl
fuzz Copyright year updates 2023-09-07 09:59:15 +01:00
gost-engine@2a8a5e0eca Update GOST engine commit to deal with test failure 2023-07-31 14:01:54 +01:00
include Implement a public BIO_ADDR_copy() function 2023-09-25 07:46:45 +10:00
krb5@aa9b4a2a64
ms Copyright year updates 2023-09-07 09:59:15 +01:00
oqs-provider@8c746d7e29 updated (lib+)oqsprovider to latest releases 2023-06-15 08:39:10 +10:00
os-dep
providers remove redundant free of NULL 2023-09-27 17:22:54 +01:00
pyca-cryptography@7e33b0e773 Update pyca-cryptography submodule to fix CI 2022-12-16 18:24:16 +01:00
python-ecdsa@4de8d5bf89
ssl Remove a spurious inclusion of the sparse array header file 2023-09-25 07:45:32 +10:00
test Support all NULL-syntax X.509v3 extensions 2023-09-25 15:12:04 -04:00
tlsfuzzer@dbd56c1490
tlslite-ng@771e9f59d6
tools
util Implement a public BIO_ADDR_copy() function 2023-09-25 07:46:45 +10:00
VMS
wycheproof@2196000605
.gitattributes
.gitignore Update .gitignore with LSP files 2023-07-02 16:51:54 +10:00
.gitmodules Add openssl/fuzz-corpora repository as submodule 2023-04-11 10:41:56 +02:00
ACKNOWLEDGEMENTS.md
AUTHORS.md
build.info build.info: Introduce special syntax for dependencies on script modules 2023-06-08 07:53:10 +02:00
CHANGES.md Add CVE-2023-4807 fix to CHANGES.md and NEWS.md 2023-09-11 10:55:51 +02:00
CODE-OF-CONDUCT.md
config
config.com
configdata.pm.in Use $config{build_file} instead of $target{build_file} 2023-02-01 08:30:04 +01:00
Configure Copyright year updates 2023-09-07 09:59:15 +01:00
CONTRIBUTING.md
FAQ.md
HACKING.md
INSTALL.md Optimize SM2 on aarch64 2023-08-24 14:57:35 +02:00
LICENSE.txt
NEWS.md Fix new typos found by codespell 2023-09-18 09:04:22 +10:00
NOTES-ANDROID.md
NOTES-DJGPP.md
NOTES-NONSTOP.md Document limits on static and dynamic linking for HPE NonStop platforms. 2023-02-08 16:09:58 +01:00
NOTES-PERL.md
NOTES-UNIX.md
NOTES-VALGRIND.md
NOTES-VMS.md Add information on the 'ias' port for OpenVMS 2023-05-19 10:02:04 +10:00
NOTES-WINDOWS.md Update documentation to reflect new Windows on Arm configurations 2023-03-20 14:44:19 +01:00
README-ENGINES.md
README-FIPS.md Add FIPS build instructions 2023-07-14 11:35:23 +10:00
README-PROVIDERS.md
README.md doc: add the migration guide to the new guide series 2023-08-23 18:17:53 +01:00
SUPPORT.md
VERSION.dat Prepare for 3.2 alpha 2 2023-09-07 10:00:46 +01:00

Welcome to the OpenSSL Project

openssl logo

github actions ci badge appveyor badge

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.

Table of Contents

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 can be found in the ossl-guide-migration(7ossl) manual page.

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.txt 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.

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.

Copyright

Copyright (c) 1998-2023 The OpenSSL Project Authors

Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson

All rights reserved.