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patches/packages/mozilla-thunderbird-102.4.2-x86_64-1_slack15.0.txz: Upgraded. This is a bugfix release. For more information, see: https://www.mozilla.org/en-US/thunderbird/102.4.2/releasenotes/
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364 lines
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<center>
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<h2>NSS FAQ</h2>
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<i><FONT SIZE="-1">
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Newsgroup:
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<A HREF="news://news.mozilla.org/mozilla.dev.tech.crypto">mozilla.dev.tech.crypto</A>
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</FONT></i>
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<p>
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<a href="#Q1">General Questions</a>
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<ul>
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<li>
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<a href="#Q1.1">What is Network Security Services (NSS)?</a></li>
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<li>
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<a href="#Q1.2">What can I do with NSS? Is NSS appropriate for my application?</a></li>
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<li>
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<a href="#q1.2a">How does NSS compare to OpenSSL?</a></li>
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<li>
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<a href="#q1.3">How does NSS compare to SSLRef?</a></li>
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<li>
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<a href="#q1.4">What platforms and development environments are supported?</a></li>
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<li>
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<a href="#q1.5">What cryptography standards are supported?</a></li>
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<li>
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<a href="#q1.7">What is the relationship between NSS and PSM?</a></li>
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<li>
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<a href="#q1.7">Where can I get the source?</a></li>
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<li>
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<a href="#q1.8">How much does it cost?</a></li>
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</ul>
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<a href="#Q2">Developer Questions</a>
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<ul>
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<li>
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<a href="#q2.1">What hardware accelerators are supported?</a></li>
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<li>
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<a href="#q2.2">How do I integrate smart cards into my application using
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NSS?</a></li>
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<li>
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<a href="#q2.3">How is NSS compatible with other Netscape products?</a></li>
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<li>
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<a href="#q2.4">Does NSS require Netscape Portable Runtime (NSPR)?</a></li>
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<li>
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<a href="#q2.5">Can I use NSS even if my application protocol isn't HTTP?</a></li>
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<li>
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<a href="#q2.6">How long does it take to integrate NSS into my application?</a></li>
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<li>
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<a href="#q2.6">How can I learn more about SSL?</a></li>
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</ul>
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<a href="#Q3">Licensing Questions</a>
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<ul>
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<li>
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<a href="#q3.1">How is NSS licensed?</a>
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<li>
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<a href="#q3.2">Is NSS available outside the United States?</a></li>
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</ul>
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<h2>
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<a NAME="Q1"><hr WIDTH="100%"></a>General Questions</h2>
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<a NAME="Q1.1"></a><H4>What is Network Security Services (NSS)?</h4>
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<P>NSS is set of libraries, APIs, utilities, and documentation designed
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to support cross-platform development of security-enabled client and
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server applications. It provides a complete open-source implementation
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of the crypto libraries used by Netscape and other companies in the
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Netscape 6 browser, server products from iPlanet E-Commerce Solutions, the
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Gateway Connected Touch Pad with Instant AOL, and other products.
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<p>For an
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overview of NSS, see <a href="overview.html">Overview of NSS</a>. For detailed information
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on the open-source NSS project, see <a href="index.html">NSS Project Page</a>.
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<br>
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<a NAME="Q1.2"></a><H4>What can I do with NSS? Is NSS appropriate for
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my application?</h4>
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<P>If you want add support for SSL, S/MIME, or other Internet security standards
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to your application, you can use Network Security Services (NSS) to do so. Because
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NSS provides complete support for all versions of SSL and TLS, it is particularly well-suited
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for applications that need to communicate with the many clients and servers
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that already support the SSL protocol.
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<p>The PKCS #11 interface included in NSS means that your application can
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use <a href="#q2.1">hardware accelerators</a> on the server and <a href="#q2.2">smart
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cards</a> for two-factor authentication.
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<br>
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<a NAME="q1.2a"></a><H4>How does NSS compare to OpenSSL?</h4>
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<a href="http://www.openssl.org/">OpenSSL</a> is an open source project that implements server-side SSL,
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TLS, and a general-purpose cryptography library. It does not support PKCS #11. It is based on
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the SSLeay library developed by Eric A. Young and Tim J. Hudson. OpenSSL is widely used in
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Apache servers and is licensed under an Apache-style licence.
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<p>NSS supports both server and client applications as well as PKCS #11 and S/MIME. To permit its use
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in as many contexts as possible,
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NSS is triple-licensed under the <a href="../../../../MPL/">Mozilla Public License</a>, the
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<a href="http://www.gnu.org/copyleft/gpl.html">GNU General Public License</a>,
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and the <a href="http://www.gnu.org/copyleft/lesser.html">GNU Lesser General Public License</a>.
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You may choose to use the code either under the terms of the MPL or the GPL or the LGPL.
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<a NAME="q1.3"></a><H4>How does NSS compare to SSLRef?</h4>
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SSLRef was an early reference implementation of the SSL protocol. It contains
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bugs that were never fixed, doesn't support TLS or or the
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new 56-bit export cipher suites, and does not contain the fix to the
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Bleichenbacher attack on PKCS#1.
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<p>Netscape no longer maintains SSLRef or makes it available. It was built as
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an example of an SSL implementation, not for creating production applications.
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<p>NSS was designed from the ground up for use by commercial developers.
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It provides a complete software development kit
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that uses the same architecture used to support security features in many client
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and server products from Netscape and other companies.
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<a NAME="q1.4"></a><H4>What platforms and development environments are supported?</h4>
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<P>iPlanet E-Commerce Solutions has certified NSS 3.1 on 18 platforms, including AIX 4.3, HP-UX 11.0,
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Red Hat Linux 6.0, Solaris (2.6 or later), Windows NT (4.0 or later), and
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Windows 2000. Other contributors are in the process of certifying additional platforms.
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The NSS 3.1 API requires C or C++ development environments.
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<p>For the latest NSS release notes and detailed platform information, see
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<a href="release_notes_31.html">NSS 3.1 Release Notes</a>.
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<a NAME="q1.5"></a><H4>What cryptography standards does NSS support?</h4>
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<P>NSS supports <a HREF="../../../docs/jargon.html#SSL">SSL v2 and v3</a>,
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<a HREF="../../../../docs/jargon.html#TLS">TLS</a>,
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<a HREF="../../../../docs/jargon.html#PKCS5">PKCS #5</a>,
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<a HREF="../../../../docs/jargon.html#PKCS7">PKCS #7</a>,
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<a HREF="../../../../docs/jargon.html#PKCS11">PKCS #11</a>,
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<a HREF="../../../../docs/jargon.html#PKCS12">PKCS #12</a>,
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<a HREF="../../../../docs/jargon.html#SMIME">S/MIME</a>, and
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<a HREF="../../../../docs/jargon.html#X.509">X.509 v3</a> certificates.
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For complete details,
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see <a href="nss-3.11/nss-3.11-algorithms.html">
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Encryption Technologies</a>.
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<a NAME="q1.6"></a><H4>What is the relationship between NSS and PSM?</H4>
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Personal Security Manager (PSM) is built on top of NSS. It consists of libraries
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and a daemon designed to support cross-platform development of security-enabled
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client applications. The PSM binary provides a client module
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that performs cryptographic operations on behalf of applications.
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Netscape Personal Security Manager ships with Netscape 6 and the Gateway Connected Touch Pad with Instant AOL,
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and is also available for use with Communicagotr 4.7x.
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<p>For more information about the PSM open-source project, see <a href="../psm">Personal Security Manager</a>.
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<a NAME="q1.7"></a><H4>Where can I get the source code?</H4>
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For instructions on how to check out and build the NSS 3.1 source code, see
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<a href="buildnss_31.html">Build Instructions for NSS 3.1.</a> The source code may also
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be downloaded as a tar file from
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<a href="ftp://ftp.mozilla.org/pub/mozilla.org/security/">ftp://ftp.mozilla.org/pub/mozilla.org/security/</a>.
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<a NAME="q1.8"></a><H4>How much does it cost?</H4>
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NSS source code and binaries (when they become available) are completely free. No license fees,
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no royalty fees, no subscription fees.
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<a NAME="Q2"><h2>
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<hr WIDTH="100%"></a>Developer Questions</h2>
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<a NAME="q2.1"></a><H4>What hardware accelerators are supported?</h4>
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<P>NSS supports the PKCS #11 interface for hardware acceleration. Since leading accelerator vendors such as
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Chrysalis-IT, nCipher, and Rainbow Technologies also support this interface, NSS-enabled applications
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can support a wide variety of hardware accelerators.
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<a NAME="q2.2"></a><H4>How do I integrate smart cards into my application using
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NSS?</h4>
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<P>NSS supports the PKCS #11 interface for smart card integration. Applications that use the PKCS #11
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interface provided by NSS will therefore support smart cards from leading vendors such as
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ActiveCard, Litronic, and SecureID Technologies that also support the PKCS #11 interface.
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<a NAME="q2.3"></a><H4>How is NSS compatible with other Netscape products?</h4>
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<P>NSS provides tight integration with other Netscape products in two ways.
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First, by using NSS to implement SSL and TLS, you can support SSL communications
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with all products from Netscape and all other vendors
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that support SSL<FONT color="#CC0000"> and TLS.</FONT> Second, NSS makes it easy
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to share certificates between Netscape client and server products
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and your application.
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<a NAME="q2.4"></a><H4>Does NSS require Netscape Portable Runtime (NSPR)?</h4>
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<P>To provide cross-platform support, NSS utilizes Netscape Portable Runtime
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(NSPR) libraries as a portability interface and implementation that
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provides consistent cross-platform semantics for network I/O and threading
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models. You can use NSPR throughout your application or
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only in the portion that calls into NSS. Netscape strongly recommends that
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multithreaded applications use the NSPR or native OS threading model. (In
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recent NSPR releases, the NSPR threading model is compatible with the native
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threading model if the OS has native threads.) Alternatively, you can adapt
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the open-source NSPR implementation to be compatible with your existing
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application's threading models. More information about NSPR may be found at
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<a href="http://www.mozilla.org/projects/nspr/">Netscape Portable Runtime</a>.
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<br>
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<a NAME="q2.5"></a><H4>Can I use NSS even if my application protocol isn't
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HTTP?</h4>
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<P>Yes, SSL independent of application protocols. It works with common
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Internet standard application protocols (HTTP, POP3, FTP, SMTP, etc.) as
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well as custom application protocols using TCP/IP.
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<br>
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<a NAME="q2.6"></a><H4>How long does it take to integrate NSS into my application?</h4>
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<P>The integration effort depends on an number of factors, such as developer
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skill set, application complexity, and the level of security required for
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your application. NSS includes detailed documentation of the SSL API and
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sample code that demonstrates basic SSL functionality (setting up an encrypted
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session, server authentication, and client authentication) to help jump start the
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integration process. However, there is little or no documentation currently
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available for the rest of the NSS API. If your application requires sophisticated
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certificate management, smart card support, or hardware acceleration, your
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integration effort will be more extensive.
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<a NAME="q2.7"></a><H4> Where can I download the NSS tools?</h4>
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Currently, you must download the NSS source and build it to create binary files for the NSS tools.
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For more information, see <A HREF="tools/">NSS Tools</A>.
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<a NAME="q2.8"></a><H4>How can I learn more about SSL?</h4>
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NSS provides extensive documentation related to SSL, including high-level introductions,
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detailed API documentation, sample code for simple client and server
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applications, the original SSL 3.0 specification, and
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information on debugging SSL applications. For details, see the
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<a href="ssl/">SSL/TLS Project Page</a>. For information about the NSS tools, including those used
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for debugging SSL applications, see <a href="http://www.mozilla.org/projects/security/pki/nss/tools/">
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NSS Security Tools</a>.
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<a NAME="Q3"><h2>
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<hr WIDTH="100%"></a>Licensing Questions</h2>
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<H4><a NAME="q3.1"></a>How is NSS licensed?</h4>
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<P>NSS is triple-licensed under the <a href="../../../../MPL/">Mozilla Public License</a>, the
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<a href="http://www.gnu.org/copyleft/gpl.html">GNU General Public License</a>,
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and the <a href="http://www.gnu.org/copyleft/lesser.html">GNU Lesser General Public License</a>.
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For more details, see the <a href="http://www.mozilla.org/crypto-faq.html#1-3">Mozilla Crypto FAQ</a>.
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<a NAME="q3.2"></a><H4>Is NSS available outside the United States?</h4>
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<P>Yes; see
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<a href="buildnss_31.html">Build Instructions for NSS 3.1.</a> and
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<a href="ftp://ftp.mozilla.org/pub/mozilla.org/security/">ftp://ftp.mozilla.org/pub/mozilla.org/security/</a>.
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However, NSS source code is subject to the U.S. Export
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Administration Regulations and other U.S. law, and may not be exported or
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re-exported to certain
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countries (currently Cuba, Iran, Libya, North Korea, Sudan and Syria) or
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to persons or entities prohibited from receiving U.S. exports (including
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those (a) on the Bureau of Industry and Security Denied Parties List or
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Entity List, (b) on the Office of Foreign Assets Control list of Specially
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Designated Nationals and Blocked Persons, and (c) involved with missile
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technology or nuclear, chemical or biological weapons).
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<p>For more information about U.S. export controls on encryption software,
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see the <a href="http://www.mozilla.org/crypto-faq.html">Mozilla Crypto FAQ</a>.
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<div id="footer">
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<ul>
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<li><a href="../../../../support/">Support Options</a></li>
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<li><a href="../../../../security/">Security Center</a></li>
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<li><a href="../../../../privacy-policy.html">Privacy Policy</a></li>
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<li><a href="../../../../contact/">Contact Us</a></li>
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</ul>
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<p class="affiliates">International Affiliates: <a href="http://www.mozilla-europe.org/">Mozilla Europe</a> - <a
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href="http://mozilla.jp/">Mozilla Japan</a> - <a href="http://www.mozillaonline.com/">Mozilla China</a></p>
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<p class="copyright">
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Portions of this content are © 1998–2009 by individual mozilla.org contributors<br>
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Content available under a Creative Commons <a href="http://www.mozilla.org/foundation/licensing/website-content.html">license</a></p>
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<p>
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<span>Last modified July 12, 2007</span>
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<span><a href="http://bonsai-www.mozilla.org/cvslog.cgi?file=mozilla-org/html/projects/security/pki/nss/faq.html&rev=&root=/www/">Document History</a></span>
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<span><a href="https://doctor.mozilla.org/?action=edit&file=mozilla-org/html/projects/security/pki/nss/faq.html">Edit this Page</a></span> <span>(or <a href="/contribute/writing/cvs">via CVS</a>)</span>
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