[xmlsec] FAQ 1.3

[Aleksey Sanin]

        I have drafted a combined answer for current FAQ topics 1.2


        and 1.3. Any comments and suggestions are welcome.


Aleksey


        1.2. Can I use xmlsec with proprietary application or library?
        Can I use xmlsec with a GNU GPL application or library?

XML Security Library is released under the MIT license 
<http://www.opensource.org/licenses/mit-license.html> which
allows you to link it with proprietary applications as well as with
GPLed code. However, xmlsec library is based on other libraries
and you should look at all the licenses to get the full picture. The
table bellow summarizes my understanding of the situation. You
might want to talk with your lawyer to confirm that it is correct.


	Dependencies
	Dependencies License
	Using with proprietary applications/libraries
	Using with GPL applications/libraries
xmlsec-core
	LibXML2 <http://xmlsoft.org>/LibXSLT <http://xmlsoft.org/XSLT> 	MIT 
License <http://www.opensource.org/licenses/mit-license.html> 	Yes.
	Yes.
xmlsec-openssl (also requires xmlsec-core library)
	OpenSSL
<http://www.openssl.org> 	OpenSSL License
	Yes.
	May be. OpenSSL FAQ <http://www.openssl.org/support/faq.cgi#LEGAL2>  
states that OpenSSL library is covered by a special GPL exception 
<http://www.gnu.org/licenses/gpl-faq.html#WritingFSWithNFLibs> thus it 
could be used in GPLed applications/libraries. However, some people 
think that this is not true (one 
<http://lists.debian.org/debian-legal/2002/debian-legal-200210/msg00173.html> 
and two 
<http://lists.debian.org/debian-legal/2002/debian-legal-200205/msg00127.html>). 

xmlsec-gnutls (also requires xmlsec-core library) 	GnuTLS 
<http://www.gnu.org/software/gnutls/>
	GPL <http://www.opensource.org/licenses/gpl-license.php>
	Yes, but the application source code must be also released under GPL.
	Yes.
xmlsec-nss (also requires xmlsec-core library) 	NSS 
<http://www.mozilla.org/projects/security/pki/nss/>
	Mozilla Public License <http://www.opensource.org/licenses/mozilla1.0.php>
	Yes.
	Probably yes, but at the time I am writing this there are some 
unresolved issues <http://bugzilla.mozilla.org/show_bug.cgi?id=217162>.



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