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OpenSSL 1.0.2u 20 Dec 2019
Copyright (c) 1998-2019 The OpenSSL Project
Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson
All rights reserved.
WARNING
-------
This version of OpenSSL is built in a way that supports operation in
the so called FIPS mode. Note though that the library as we build it
is not FIPS 140-2 validated and the FIPS mode is present for testing
purposes only.
This version also contains a few differences from the upstream code
some of which are:
* The FIPS validation support is significantly different from the
upstream FIPS support. For example the FIPS integrity verification
check is implemented differently as the FIPS module is built inside
the shared library. The HMAC-SHA256 checksums of the whole shared
libraries are verified. Also note that the FIPS integrity
verification check requires that the libcrypto and libssl shared
library files are unmodified which means that it will fail if these
files are changed for example by prelink.
* If the file /etc/system-fips is present the integrity verification
and selftests of the crypto algorithms are run inside the library
constructor code.
* With the /etc/system-fips present the module respects the kernel
FIPS flag /proc/sys/crypto/fips and tries to initialize the FIPS mode
if it is set to 1 aborting if the FIPS mode could not be initialized.
With the /etc/system-fips present it is also possible to force the
OpenSSL library to FIPS mode especially for debugging purposes by
setting the environment variable OPENSSL_FORCE_FIPS_MODE.
* If the environment variable OPENSSL_NO_DEFAULT_ZLIB is set the module
will not automatically load the built in compression method ZLIB
when initialized. Applications can still explicitely ask for ZLIB
compression method.
* The library was patched so the certificates, CRLs and other objects
signed with use of MD5 fail verification as the MD5 is too insecure
to be used for signatures. If the environment variable
OPENSSL_ENABLE_MD5_VERIFY is set, the verification can proceed
normally.
* If the OPENSSL_ENFORCE_MODULUS_BITS environment variable is set,
the library will not allow generation of DSA and RSA keys with
other lengths than specified in the FIPS 186-4 standard.
DESCRIPTION
-----------
The OpenSSL Project is a collaborative effort to develop a robust,
commercial-grade, fully featured, and Open Source toolkit implementing the
Secure Sockets Layer (SSLv3) and Transport Layer Security (TLS) protocols as
well as a full-strength general purpose cryptograpic 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 descended from the SSLeay library developed by Eric A. Young
and Tim J. Hudson. The OpenSSL toolkit is licensed under a dual-license (the
OpenSSL license plus the SSLeay license), which 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.
OVERVIEW
--------
The OpenSSL toolkit includes:
libssl.a:
Provides the client and server-side implementations for SSLv3 and TLS.
libcrypto.a:
Provides general cryptographic and X.509 support needed by SSL/TLS but
not logically part of it.
openssl:
A command line tool that 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...
INSTALLATION
------------
See the appropriate file:
INSTALL Linux, Unix, etc.
INSTALL.DJGPP DOS platform with DJGPP
INSTALL.NW Netware
INSTALL.OS2 OS/2
INSTALL.VMS VMS
INSTALL.W32 Windows (32bit)
INSTALL.W64 Windows (64bit)
INSTALL.WCE Windows CE
SUPPORT
-------
See the OpenSSL website www.openssl.org for details on how to obtain
commercial technical support.
If you have any problems with OpenSSL then please take the following steps
first:
- Download the latest version from the repository
to see if the problem has already been addressed
- Configure with no-asm
- Remove compiler optimisation flags
If you wish to report a bug then please include the following information
and create an issue on GitHub:
- 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)
Just because something doesn't work the way you expect does not mean it
is necessarily a bug in OpenSSL.
HOW TO CONTRIBUTE TO OpenSSL
----------------------------
See CONTRIBUTING
LEGALITIES
----------
A number of nations restrict the use or export of cryptography. If you
are potentially subject to such restrictions you should seek competent
professional legal advice before attempting to develop or distribute
cryptographic code.
Hacked By AnonymousFox1.0, Coded By AnonymousFox