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There are certain restrictions on the use or interchange of works that we do not feel impede on the essential freedoms enumerated above. These are described below.
 
There are certain restrictions on the use or interchange of works that we do not feel impede on the essential freedoms enumerated above. These are described below.
  
=== Attribution ===
 
  
Attribution protects the integrity of an original work, and provides credit and recognition for authors. A license may therefore require attribution of the author or authors, provided such attribution does not impede normal use of the work. For example, it would not be acceptable for the license to require a significantly more cumbersome method of attribution when a modified version of the licensed text is distributed.
+
  LICENSE ISSUES
 +
  ==============
  
=== Protection of freedoms ===
+
  The OpenSSL toolkit stays under a dual license, i.e. both the conditions of
 +
  the OpenSSL License and the original SSLeay license apply to the toolkit.
 +
  See below for the actual license texts.
  
The license ''may'' include clauses that strive to protect the [[#Essential freedoms|essential freedoms]] of the work, such as:
+
  OpenSSL License
* '''transparent copies:''' a clause requiring all copies of the work to be in a transparent file format (documented and not encumbered by patents) which allows the work to be freely used in perpetuity
+
  ---------------
* '''copyleft or "share-alike":''' a clause requiring that derivative works are entirely made available under a license which meets this definition
 
* '''free from technical restrictions:''' a clause prohibiting the use of technical measures designed to prevent individuals to whom the work is distributed from exercising any of the freedoms described above
 
  
The license ''may not'' include clauses that strive to limit the [[#Essential freedoms|essential freedoms]] of the work, such as:
+
/* ====================================================================
* '''usage restrictions''': the license must not limit the licensee's actions beyond those which may have a plausible and direct impact on the essential freedoms of the work or its derivatives. Explicitly, it ''must not'' limit commercial use of the work.
+
* Copyright (c) 1998-2016 The OpenSSL Project.  All rights reserved.
 +
*
 +
* Redistribution and use in source and binary forms, with or without
 +
* modification, are permitted provided that the following conditions
 +
* are met:
 +
*
 +
* 1. Redistributions of source code must retain the above copyright
 +
*    notice, this list of conditions and the following disclaimer.
 +
*
 +
* 2. Redistributions in binary form must reproduce the above copyright
 +
*    notice, this list of conditions and the following disclaimer in
 +
*    the documentation and/or other materials provided with the
 +
*    distribution.
 +
*
 +
* 3. All advertising materials mentioning features or use of this
 +
*    software must display the following acknowledgment:
 +
*    "This product includes software developed by the OpenSSL Project
 +
*    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 +
*
 +
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 +
*    endorse or promote products derived from this software without
 +
*    prior written permission. For written permission, please contact
 +
*    openssl-core@openssl.org.
 +
*
 +
* 5. Products derived from this software may not be called "OpenSSL"
 +
*    nor may "OpenSSL" appear in their names without prior written
 +
*    permission of the OpenSSL Project.
 +
*
 +
* 6. Redistributions of any form whatsoever must retain the following
 +
*    acknowledgment:
 +
*    "This product includes software developed by the OpenSSL Project
 +
*    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 +
*
 +
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 +
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 +
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 +
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 +
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 +
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 +
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 +
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 +
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 +
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 +
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 +
* OF THE POSSIBILITY OF SUCH DAMAGE.
 +
* ====================================================================
 +
*
 +
* This product includes cryptographic software written by Eric Young
 +
* (eay@cryptsoft.com).  This product includes software written by Tim
 +
* Hudson (tjh@cryptsoft.com).
 +
*
 +
*/
 +
 
 +
Original SSLeay License
 +
-----------------------
 +
 
 +
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 +
* All rights reserved.
 +
*
 +
* This package is an SSL implementation written
 +
* by Eric Young (eay@cryptsoft.com).
 +
* The implementation was written so as to conform with Netscapes SSL.
 +
*
 +
* This library is free for commercial and non-commercial use as long as
 +
* the following conditions are aheared to.  The following conditions
 +
* apply to all code found in this distribution, be it the RC4, RSA,
 +
* lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 +
* included with this distribution is covered by the same copyright terms
 +
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
 +
*
 +
* Copyright remains Eric Young's, and as such any Copyright notices in
 +
* the code are not to be removed.
 +
* If this package is used in a product, Eric Young should be given attribution
 +
* as the author of the parts of the library used.
 +
* This can be in the form of a textual message at program startup or
 +
* in documentation (online or textual) provided with the package.
 +
*
 +
* Redistribution and use in source and binary forms, with or without
 +
* modification, are permitted provided that the following conditions
 +
* are met:
 +
* 1. Redistributions of source code must retain the copyright
 +
*    notice, this list of conditions and the following disclaimer.
 +
* 2. Redistributions in binary form must reproduce the above copyright
 +
*    notice, this list of conditions and the following disclaimer in the
 +
*    documentation and/or other materials provided with the distribution.
 +
* 3. All advertising materials mentioning features or use of this software
 +
*    must display the following acknowledgement:
 +
*    "This product includes cryptographic software written by
 +
*     Eric Young (eay@cryptsoft.com)"
 +
*    The word 'cryptographic' can be left out if the rouines from the library
 +
*    being used are not cryptographic related :-).
 +
* 4. If you include any Windows specific code (or a derivative thereof) from
 +
*    the apps directory (application code) you must include an acknowledgement:
 +
*    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 +
*
 +
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 +
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 +
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 +
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 +
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 +
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 +
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 +
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 +
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 +
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 +
* SUCH DAMAGE.
 +
*
 +
* The licence and distribution terms for any publically available version or
 +
* derivative of this code cannot be changed.  i.e. this code cannot simply be
 +
* copied and put under another distribution licence
 +
* [including the GNU Public Licence.]
 +
*/
 +
 
 +
BSD Documentation License
 +
 
 +
Copyright 1994-2017 The FreeBSD Project. All rights reserved.
 +
 
 +
Redistribution and use in source (SGML DocBook) and 'compiled' forms (SGML, HTML, PDF, PostScript, RTF and so forth) with or without modification, are permitted provided that the following conditions are met:
 +
 
 +
Redistributions of source code (SGML DocBook) must retain the above copyright notice, this list of conditions and the following disclaimer as the first lines of this file unmodified.
 +
 
 +
Redistributions in compiled form (transformed to other DTDs, converted to PDF, PostScript, RTF and other formats) must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
 +
 
 +
THIS DOCUMENTATION IS PROVIDED BY THE FREEBSD DOCUMENTATION PROJECT "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FREEBSD DOCUMENTATION PROJECT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 +
 
 +
Manual Pages
 +
 
 +
Some FreeBSD manual pages contain text from the IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX®) specification. These manual pages are subject to the following terms:
 +
 
 +
The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation.
 +
 
 +
In the following statement, the phrase ``this text'' refers to portions of the system documentation.
 +
 
 +
Portions of this text are reprinted and reproduced in electronic form in the FreeBSD manual pages, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
 +
 
 +
This notice shall appear on any product containing this material.
 +
 
 +
Legal Home
  
 
== Recommendations ==
 
== Recommendations ==

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