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Matt Caswell 3c0d0eca35 Work around a 32-bit mingw failure
Passing the return value from gmtime() directly to mktime() was producing
incorrect results under windows (but not under wine) when built with mingw
32-bit (but not VC-WIN32). We implement a workaround for this.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15939)
2021-07-02 17:44:02 +01:00
.github ci: add a memory sanitiser test run 2021-07-01 13:18:58 +10:00
apps load_key_certs_crls: Avoid reporting any spurious errors 2021-07-02 15:33:34 +02:00
Configurations Ensure ordinals are created during release process 2021-06-29 09:51:30 +10:00
crypto Fix memory leak in i2d_ASN1_bio_stream 2021-07-02 16:17:11 +02:00
demos Add demo for HKDF 2021-06-18 17:06:31 +10:00
dev Ensure ordinals are created during release process 2021-06-29 09:51:30 +10:00
doc PEM_read_...: document that garbage and other PEM data is skipped 2021-07-02 15:33:34 +02:00
engines afalg: add some memory initialisation calls to pacify memory sanitisation. 2021-07-01 13:18:58 +10:00
external/perl
fuzz Update copyright year 2021-06-17 13:24:59 +01:00
gost-engine@62583fb222
include OSSL_CRMF_{CERTTEMPLATE,CERTID}_get0_serialNumber(): Make result const for consistency 2021-06-30 10:38:23 +02:00
krb5@aa9b4a2a64 Update dependencies for krb5 external test 2021-06-23 10:26:53 +02:00
ms
os-dep
providers DECODER & ENCODER: Make sure to pass around the original selection bits 2021-06-29 13:50:51 +02:00
pyca-cryptography@0034926f2c update pyca-cryptography regression test suite 2021-07-02 13:05:29 +10:00
ssl Adapt other parts of the source to the changed EVP_Q_digest() and EVP_Q_mac() 2021-06-23 23:00:36 +02:00
test Work around a 32-bit mingw failure 2021-07-02 17:44:02 +01:00
tools Move some OpenSSL perl utility functions to OpenSSL::Util 2021-05-19 10:13:02 +02:00
util CMP: Add missing getter functions to CRMF API and CMP API 2021-06-30 10:38:23 +02:00
VMS
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ACKNOWLEDGEMENTS.md
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build.info Building: Add necessary dependencies for linker scripts and .rc files 2021-06-11 17:22:44 +02:00
CHANGES.md Prepare for 3.0 beta 2 2021-06-17 14:03:53 +01:00
config
config.com
configdata.pm.in configdata.pm: Allow extra arguments when --query is given. 2021-05-29 11:02:37 +02:00
Configure Configure: Reflect that We don't build loader_attic when dynamic-engine is disabled 2021-06-23 18:06:59 +02:00
CONTRIBUTING.md
e_os.h Remove I_CAN_LIVE_WITH_LNK4049 2021-06-09 18:01:22 +10:00
FAQ.md
HACKING.md
INSTALL.md Enable ssl-trace by default 2021-06-10 09:42:12 +01:00
LICENSE.txt
NEWS.md Prepare for 3.0 beta 2 2021-06-17 14:03:53 +01:00
NOTES-ANDROID.md
NOTES-DJGPP.md
NOTES-NONSTOP.md Document cross-compile considerations for NonStop x86 builds. 2021-07-01 11:46:08 +10:00
NOTES-PERL.md Fix issues found by md-nits 2021-05-28 11:14:46 +02:00
NOTES-UNIX.md
NOTES-VALGRIND.md
NOTES-VMS.md Fix issues found by md-nits 2021-05-28 11:14:46 +02:00
NOTES-WINDOWS.md Fix issues found by md-nits 2021-05-28 11:14:46 +02:00
README-ENGINES.md
README-FIPS.md Add migration guide for 3.0 2021-05-20 08:44:08 +01:00
README-PROVIDERS.md Fix issues found by md-nits 2021-05-28 11:14:46 +02:00
README.md
SUPPORT.md
VERSION.dat Prepare for 3.0 beta 2 2021-06-17 14:03:53 +01:00

Welcome to the OpenSSL Project

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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, as well as known issues are available on the OpenSSL 3.0 Wiki 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) 1998-2021 The OpenSSL Project

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

All rights reserved.