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Romain Geissler a135948dda Fix aarch64 static linking into shared libraries (see issue #10842 and pull request #11464) 
This tries to fix the following link errors on aarch64 when using OpenSSL
3.0.0 alpha 6, compiling it with "no-shared" and -fPIC in CFLAGS, then
trying to use the resulting OpenSSL static libraries in the build of
elfutils, which embed libcrypto.a into libdebuginfo.so, which hides all
symbols (except the libdebuginfod ones) by default:

/opt/1A/toolchain/aarch64-v4.0.86/lib/gcc/aarch64-1a-linux-gnu/8.4.1/../../../../aarch64-1a-linux-gnu/bin/ld: /workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-sha1-armv8.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `OPENSSL_armcap_P' which may bind externally can not be used when making a shared object; recompile with -fPIC
/workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-sha1-armv8.o): in function `sha1_block_data_order':
(.text+0x0): dangerous relocation: unsupported relocation
/opt/1A/toolchain/aarch64-v4.0.86/lib/gcc/aarch64-1a-linux-gnu/8.4.1/../../../../aarch64-1a-linux-gnu/bin/ld: /workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-chacha-armv8.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `OPENSSL_armcap_P' which may bind externally can not be used when making a shared object; recompile with -fPIC
/workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-chacha-armv8.o): in function `ChaCha20_ctr32':
(.text+0x6c): dangerous relocation: unsupported relocation
/opt/1A/toolchain/aarch64-v4.0.86/lib/gcc/aarch64-1a-linux-gnu/8.4.1/../../../../aarch64-1a-linux-gnu/bin/ld: /workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-sha256-armv8.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `OPENSSL_armcap_P' which may bind externally can not be used when making a shared object; recompile with -fPIC /workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-sha256-armv8.o): in function `sha256_block_data_order':
(.text+0x0): dangerous relocation: unsupported relocation
/opt/1A/toolchain/aarch64-v4.0.86/lib/gcc/aarch64-1a-linux-gnu/8.4.1/../../../../aarch64-1a-linux-gnu/bin/ld: /workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-sha512-armv8.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `OPENSSL_armcap_P' which may bind externally can not be used when making a shared object; recompile with -fPIC /workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-sha512-armv8.o): in function `sha512_block_data_order':
(.text+0x0): dangerous relocation: unsupported relocation
/opt/1A/toolchain/aarch64-v4.0.86/lib/gcc/aarch64-1a-linux-gnu/8.4.1/../../../../aarch64-1a-linux-gnu/bin/ld: /workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-poly1305-armv8.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `OPENSSL_armcap_P' which may bind externally can not be used when making a shared object; recompile with -fPIC
/workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-poly1305-armv8.o): in function `poly1305_init':
(.text+0x14): dangerous relocation: unsupported relocation
/workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-poly1305-armv8.o): in function `poly1305_emit_neon':
(.text+0x8e4): relocation truncated to fit: R_AARCH64_CONDBR19 against symbol `poly1305_emit' defined in .text section in /workdir/build/build-pack/build-pack-temporary-static-dependencies/install/lib/libcrypto.a(libcrypto-lib-poly1305-armv8.o)

In poly1305-armv8.pl, hide symbols the same way they are hidden in poly1305-x86_64.pl.

Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/13056)
2020-10-22 12:16:49 +10:00
.github Fix typos and repeated words 2020-07-05 01:49:20 +02:00
apps APPS: Implement load_keyparams() to load key parameters 2020-10-22 12:14:32 +10:00
boringssl@2070f8ad91
Configurations Reconciled c99 and loader arguments for float on NonStop TNS/E and TNS/X. 2020-10-14 04:16:59 +02:00
crypto Fix aarch64 static linking into shared libraries (see issue #10842 and pull request #11464) 2020-10-22 12:16:49 +10:00
demos Update copyright year 2020-08-06 13:22:30 +01:00
dev dev/release.sh: improve instruction for pushing the tag 2020-10-17 11:54:34 +02:00
doc APPS: Implement load_keyparams() to load key parameters 2020-10-22 12:14:32 +10:00
engines Unexport internal MSBLOB and PVK functions 2020-10-21 21:10:48 +02:00
external/perl
fuzz Update copyright year 2020-10-15 14:10:06 +01:00
gost-engine@b008f2a0ff Update gost-engine to fix API rename 2020-08-07 23:13:14 +03:00
include Unexport internal MSBLOB and PVK functions 2020-10-21 21:10:48 +02:00
krb5@890ca2f401
ms
os-dep
providers Unexport internal MSBLOB and PVK functions 2020-10-21 21:10:48 +02:00
pyca-cryptography@09403100de
ssl Rename EVP_PKEY_set1_tls_encodedpoint to EVP_PKEY_set1_encoded_public_key 2020-10-20 16:39:41 +01:00
test Unexport internal MSBLOB and PVK functions 2020-10-21 21:10:48 +02:00
tools
util Unexport internal MSBLOB and PVK functions 2020-10-21 21:10:48 +02:00
VMS
.gitattributes Developer scripts: Release script 2020-04-21 10:11:41 +02:00
.gitignore Add auto-gen SM2 der files into .gitignore 2020-09-22 08:18:09 +01:00
.gitmodules GOST external tests 2020-05-23 22:04:21 +03:00
.travis-apt-pin.preferences
.travis-create-release.sh
.travis.yml Travis: default to HARNESS_JOBS=4 2020-07-02 16:48:15 +03:00
ACKNOWLEDGEMENTS.md Fix issues reported by markdownlint 2020-05-08 16:22:02 +02:00
appveyor.yml appveyor.yml: Clean up minimal configuration, adding no-ec and pruning cascaded no-* 2020-09-28 15:51:54 +02:00
AUTHORS.md Fix issues reported by markdownlint 2020-05-08 16:22:02 +02:00
build.info Update err.h to use the new lhash generation code 2020-09-18 13:30:44 +01:00
CHANGES.md Deprecate EVP_PKEY_set1_tls_encodedpoint() 2020-10-20 16:39:41 +01:00
config config: Turn into a simple wrapper 2020-06-28 18:34:36 +02:00
config.com Update copyright year 2020-07-16 14:47:04 +02:00
configdata.pm.in
Configure Configure: handle undefined shared_target. 2020-09-29 16:08:04 +02:00
CONTRIBUTING.md Change markdown link style in README, INSTALL, SUPPORT and CONTRIBUTING 2020-10-18 13:28:08 +02:00
e_os.h Implement OpenSSL secure memory for Windows 2020-10-22 12:11:35 +10:00
FAQ.md
HACKING.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
INSTALL.md Change markdown link style in README, INSTALL, SUPPORT and CONTRIBUTING 2020-10-18 13:28:08 +02:00
LICENSE.txt Rename NOTES*, README*, VERSION, HACKING, LICENSE to .md or .txt 2020-07-05 11:29:43 +02:00
NEWS.md Prepare for 3.0 alpha 8 2020-10-15 14:16:19 +01:00
NOTES-Android.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
NOTES-DJGPP.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
NOTES-Perl.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
NOTES-Unix.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
NOTES-Valgrind.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
NOTES-VMS.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
NOTES-Windows.txt Fix markdown nits in NOTES-Windows.txt 2020-09-10 08:57:55 +10:00
NOTES.HPNS NonStop port updates for 3.0.0. 2020-09-12 20:32:11 +02:00
README-Engine.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
README-FIPS.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
README.md Change markdown link style in README, INSTALL, SUPPORT and CONTRIBUTING 2020-10-18 13:28:08 +02:00
SUPPORT.md Change markdown link style in README, INSTALL, SUPPORT and CONTRIBUTING 2020-10-18 13:28:08 +02:00
VERSION.dat Prepare for 3.0 alpha 8 2020-10-15 14:16:19 +01:00

README.md

Welcome to the OpenSSL Project

openssl logo

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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) 1998-2020 The OpenSSL Project

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

All rights reserved.