A local copy of OpenSSL from GitHub
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Dr. Stephen Henson a2ab6986e4 Correction. 12 years ago
MacOS PR: 1835 14 years ago
Netware Update netware to use new SHA2 assembly language modules. 15 years ago
VMS For VMS, implement the possibility to choose 64-bit pointers with 12 years ago
apps PR: 2527 12 years ago
bugs Keep disclaming 16-bit support. 18 years ago
certs grammar 15 years ago
crypto Give parameters names in prototypes. 12 years ago
demos Simple automated certificate creation demo. 12 years ago
doc x86[_64]cpuid.pl: add function accessing rdrand instruction. 12 years ago
engines e_padlock.c: fix typo. 12 years ago
fips Don't include des.h any more: it is not needed. 12 years ago
include Add emacs cache files to .cvsignore. 18 years ago
ms Option "fipscheck" which checks to see if FIPS is autodetected in 12 years ago
os2 Make a number of changes to the OS/2 build. Submitter's comment below. 19 years ago
perl Add emacs cache files to .cvsignore. 18 years ago
shlib Apply mingw patches as supplied by Roumen Petrov an Alon Bar-Lev 15 years ago
ssl set FIPS allow before initialising ctx 12 years ago
test cms-test.pl: make it work with not-so-latest perl. 12 years ago
times Updates from 1.0.0-stable branch. 14 years ago
tools PR: 2234 13 years ago
util Strip CRs when installing fips_premain.c Correct compat library rule 12 years ago
.cvsignore .cvsignore update: ignore all flavors of shared objects. 14 years ago
ACKNOWLEDGMENTS missed change in ACKNOWLEDGEMENTS file 12 years ago
CHANGES Fix the version history: changes going into 1.1.0 that are also going 12 years ago
CHANGES.SSLeay Updates from 1.0.0-stable branch. 14 years ago
Configure Option "fipscheck" which checks to see if FIPS is autodetected in 12 years ago
FAQ OCSP stapling fix (OpenSSL 0.9.8r/1.0.0d) 12 years ago
INSTALL Fix URI of OpenSSL Request Tracker information 15 years ago
INSTALL.MacOS Typos (Chris Pepper <pepper@mail.reppep.com>) 21 years ago
INSTALL.NW Netware support. 15 years ago
INSTALL.OS2 Add support for shared libraries with OS/2. 21 years ago
INSTALL.VMS After some adjustments, apply the changes OpenSSL 1.0.0d on OpenVMS 12 years ago
INSTALL.W32 INSTALL.W32: document trouble with symlinks under MSYS. 12 years ago
INSTALL.W64 Pull up Win64 support from 0.9.8. 18 years ago
INSTALL.WCE First draft for WCE PortSDK support. Once again! It's *draft* which requires 17 years ago
LICENSE OCSP stapling fix (OpenSSL 0.9.8r/1.0.0d) 12 years ago
Makefile.fips Typo. 12 years ago
Makefile.org Add DSA and ECDSA "clone digests" to module for compatibility with old 12 years ago
Makefile.shared Makefile.share: fix brown-bag typo in link_o.darwin. 12 years ago
NEWS OCSP stapling fix (OpenSSL 0.9.8r/1.0.0d) 12 years ago
PROBLEMS PROBLEMS: MacOS X is not necessarily a problem anymore. 13 years ago
README OCSP stapling fix (OpenSSL 0.9.8r/1.0.0d) 12 years ago
README.ASN1 Merge from the ASN1 branch of new ASN1 code 22 years ago
README.ECC Add NSA sublicense info. 12 years ago
README.ENGINE oops, there were other cases of "ENGINE_ID" to change too. 21 years ago
README.FIPS Correction. 12 years ago
STATUS OCSP stapling fix (OpenSSL 0.9.8r/1.0.0d) 12 years ago
TABLE x86_64 assembler pack: add x86_64-gf2m module. 12 years ago
config Some changes to support VxWorks in the validted module. 12 years ago
e_os.h Add new type ossl_ssize_t instead of ssize_t and move definitions to 13 years ago
e_os2.h Add new type ossl_ssize_t instead of ssize_t and move definitions to 13 years ago
install.com After some adjustments, apply the changes OpenSSL 1.0.0d on OpenVMS 12 years ago
makevms.com Corrections to the VMS build system. 12 years ago
openssl.doxy Add functions to add certs to stacks, used for CA file/path stuff in servers. 24 years ago
openssl.spec Fix from 0.9.8-stable 14 years ago


OpenSSL 1.1.0-dev

Copyright (c) 1998-2011 The OpenSSL Project
Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson
All rights reserved.


The OpenSSL Project is a collaborative effort to develop a robust,
commercial-grade, fully featured, and Open Source toolkit implementing the
Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1)
protocols as well as a full-strength general purpose cryptography library.
The project is managed by a worldwide community of volunteers that use the
Internet to communicate, plan, and develop the OpenSSL toolkit and its
related documentation.

OpenSSL is based on the excellent SSLeay library developed from Eric A. Young
and Tim J. Hudson. The OpenSSL toolkit is licensed under a dual-license (the
OpenSSL license plus the SSLeay license) situation, which basically means
that you are free to get and use it for commercial and non-commercial
purposes as long as you fulfill the conditions of both licenses.


The OpenSSL toolkit includes:

Implementation of SSLv2, SSLv3, TLSv1 and the required code to support
both SSLv2, SSLv3 and TLSv1 in the one server and client.

General encryption and X.509 v1/v3 stuff needed by SSL/TLS but not
actually logically part of it. It includes routines for the following:

libdes - EAY's libdes DES encryption package which was floating
around the net for a few years, and was then relicensed by
him as part of SSLeay. It includes 15 'modes/variations'
of DES (1, 2 and 3 key versions of ecb, cbc, cfb and ofb;
pcbc and a more general form of cfb and ofb) including desx
in cbc mode, a fast crypt(3), and routines to read
passwords from the keyboard.
RC4 encryption,
RC2 encryption - 4 different modes, ecb, cbc, cfb and ofb.
Blowfish encryption - 4 different modes, ecb, cbc, cfb and ofb.
IDEA encryption - 4 different modes, ecb, cbc, cfb and ofb.

MD5 and MD2 message digest algorithms, fast implementations,
SHA (SHA-0) and SHA-1 message digest algorithms,
MDC2 message digest. A DES based hash that is popular on smart cards.

Public Key
RSA encryption/decryption/generation.
There is no limit on the number of bits.
DSA encryption/decryption/generation.
There is no limit on the number of bits.
Diffie-Hellman key-exchange/key generation.
There is no limit on the number of bits.

X.509v3 certificates
X509 encoding/decoding into/from binary ASN1 and a PEM
based ASCII-binary encoding which supports encryption with a
private key. Program to generate RSA and DSA certificate
requests and to generate RSA and DSA certificates.

The normal digital envelope routines and base64 encoding. Higher
level access to ciphers and digests by name. New ciphers can be
loaded at run time. The BIO io system which is a simple non-blocking
IO abstraction. Current methods supported are file descriptors,
sockets, socket accept, socket connect, memory buffer, buffering, SSL
client/server, file pointer, encryption, digest, non-blocking testing
and null.

Data structures
A dynamically growing hashing system
A simple stack.
A Configuration loader that uses a format similar to MS .ini files.

A command line tool that can be used for:
Creation of RSA, DH and DSA key parameters
Creation of X.509 certificates, CSRs and CRLs
Calculation of Message Digests
Encryption and Decryption with Ciphers
SSL/TLS Client and Server Tests
Handling of S/MIME signed or encrypted mail


Various companies hold various patents for various algorithms in various
locations around the world. _YOU_ are responsible for ensuring that your use
of any algorithms is legal by checking if there are any patents in your
country. The file contains some of the patents that we know about or are
rumored to exist. This is not a definitive list.

RSA Security holds software patents on the RC5 algorithm. If you
intend to use this cipher, you must contact RSA Security for
licensing conditions. Their web page is http://www.rsasecurity.com/.

RC4 is a trademark of RSA Security, so use of this label should perhaps
only be used with RSA Security's permission.

The IDEA algorithm is patented by Ascom in Austria, France, Germany, Italy,
Japan, the Netherlands, Spain, Sweden, Switzerland, UK and the USA. They
should be contacted if that algorithm is to be used; their web page is

NTT and Mitsubishi have patents and pending patents on the Camellia
algorithm, but allow use at no charge without requiring an explicit
licensing agreement: http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html


To install this package under a Unix derivative, read the INSTALL file. For
a Win32 platform, read the INSTALL.W32 file. For OpenVMS systems, read

Read the documentation in the doc/ directory. It is quite rough, but it
lists the functions; you will probably have to look at the code to work out
how to use them. Look at the example programs.


For some platforms, there are some known problems that may affect the user
or application author. We try to collect those in doc/PROBLEMS, with current
thoughts on how they should be solved in a future of OpenSSL.


See the OpenSSL website www.openssl.org for details of how to obtain
commercial technical support.

If you have any problems with OpenSSL then please take the following steps

- Download the current snapshot from ftp://ftp.openssl.org/snapshot/
to see if the problem has already been addressed
- Remove ASM versions of libraries
- Remove compiler optimisation flags

If you wish to report a bug then please include the following information in
any bug report:

- On Unix systems:
Self-test report generated by 'make report'
- On other systems:
OpenSSL version: output of 'openssl version -a'
OS Name, Version, Hardware platform
Compiler Details (name, version)
- Application Details (name, version)
- Problem Description (steps that will reproduce the problem, if known)
- Stack Traceback (if the application dumps core)

Report the bug to the OpenSSL project via the Request Tracker
(http://www.openssl.org/support/rt.html) by mail to:


Note that the request tracker should NOT be used for general assistance
or support queries. Just because something doesn't work the way you expect
does not mean it is necessarily a bug in OpenSSL.

Note that mail to openssl-bugs@openssl.org is recorded in the publicly
readable request tracker database and is forwarded to a public
mailing list. Confidential mail may be sent to openssl-security@openssl.org
(PGP key available from the key servers).


Development is coordinated on the openssl-dev mailing list (see
http://www.openssl.org for information on subscribing). If you
would like to submit a patch, send it to openssl-bugs@openssl.org with
the string "[PATCH]" in the subject. Please be sure to include a
textual explanation of what your patch does.

If you are unsure as to whether a feature will be useful for the general
OpenSSL community please discuss it on the openssl-dev mailing list first.
Someone may be already working on the same thing or there may be a good
reason as to why that feature isn't implemented.

Patches should be as up to date as possible, preferably relative to the
current CVS or the last snapshot. They should follow the coding style of
OpenSSL and compile without warnings. Some of the core team developer targets
can be used for testing purposes, (debug-steve64, debug-geoff etc). OpenSSL
compiles on many varied platforms: try to ensure you only use portable

Note: For legal reasons, contributions from the US can be accepted only
if a TSU notification and a copy of the patch are sent to crypt@bis.doc.gov
(formerly BXA) with a copy to the ENC Encryption Request Coordinator;
please take some time to look at
http://www.bis.doc.gov/Encryption/PubAvailEncSourceCodeNofify.html [sic]
http://w3.access.gpo.gov/bis/ear/pdf/740.pdf (EAR Section 740.13(e))
for the details. If "your encryption source code is too large to serve as
an email attachment", they are glad to receive it by fax instead; hope you
have a cheap long-distance plan.

Our preferred format for changes is "diff -u" output. You might
generate it like this:

# cd openssl-work
# [your changes]
# ./Configure dist; make clean
# cd ..
# diff -ur openssl-orig openssl-work > mydiffs.patch