Go to file
Dr. David von Oheimb 6e2499474c APPS load_key_certs_crls(): Make file access errors much more readable
This reverts part of commit ef0449135c using a less invasive suppression.

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16452)
2022-01-07 10:41:21 +01:00
.github Fix copyright year issues 2022-01-06 09:27:02 +01:00
apps APPS load_key_certs_crls(): Make file access errors much more readable 2022-01-07 10:41:21 +01:00
Configurations
crypto OSSL_STORE_open_ex(): Prevent spurious error: unregistered scheme=file 2022-01-07 10:40:44 +01:00
demos Fix typos 2022-01-05 12:37:20 +01:00
dev Fix typos 2022-01-05 12:37:20 +01:00
doc Fix typos 2022-01-05 12:37:20 +01:00
engines
external/perl
fuzz
gost-engine@a6014f3569
include Fix copyright year issues 2022-01-06 09:27:02 +01:00
krb5@aa9b4a2a64
ms
os-dep
providers OSSL_STORE: Prevent spurious error during loading private keys 2022-01-06 09:12:57 +01:00
pyca-cryptography@fa84d185c0
python-ecdsa@4de8d5bf89
ssl fix the return check of EVP_PKEY_CTX_ctrl() in 5 spots 2022-01-07 09:49:08 +01:00
test Test importing EC key parameters with a bad curve 2022-01-07 09:51:04 +01:00
tlsfuzzer@dbd56c1490
tlslite-ng@771e9f59d6
tools
util Fix copyright year issues 2022-01-06 09:27:02 +01:00
VMS
wycheproof@2196000605
.gitattributes
.gitignore
.gitmodules
ACKNOWLEDGEMENTS.md
appveyor.yml
AUTHORS.md
build.info
CHANGES.md
config
config.com
configdata.pm.in Fix typos 2022-01-05 12:37:20 +01:00
Configure Fix typos 2022-01-05 12:37:20 +01:00
CONTRIBUTING.md
e_os.h
FAQ.md
HACKING.md
INSTALL.md Fix typos 2022-01-05 12:37:20 +01:00
LICENSE.txt
NEWS.md
NOTES-ANDROID.md
NOTES-DJGPP.md
NOTES-NONSTOP.md
NOTES-PERL.md
NOTES-UNIX.md
NOTES-VALGRIND.md
NOTES-VMS.md
NOTES-WINDOWS.md
README-ENGINES.md Fix typos 2022-01-05 12:37:20 +01:00
README-FIPS.md
README-PROVIDERS.md
README.md
SUPPORT.md
VERSION.dat

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, 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.