65 lines
4.3 KiB
HTML
65 lines
4.3 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Security mechanisms" />
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<meta name="abstract" content="The GSS-API consists of an abstract framework over one or more underlying security mechanisms. How the framework interacts with the underlying security mechanisms is implementation specific." />
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<meta name="description" content="The GSS-API consists of an abstract framework over one or more underlying security mechanisms. How the framework interacts with the underlying security mechanisms is implementation specific." />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<title>Security mechanisms</title>
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</head>
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<body id="rzahajgssconcept50"><a name="rzahajgssconcept50"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Security mechanisms</h1>
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<div><p>The GSS-API consists of an abstract framework over one or more
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underlying security mechanisms. How the framework interacts with the underlying
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security mechanisms is implementation specific.</p>
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<div class="p">Such implementations exist in two general categories: <ul><li>At one extreme, a monolithic implementation tightly binds the framework
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to a single mechanism. This kind of implementation precludes the use of other
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mechanisms or even different implementations of the same mechanism.</li>
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<li>At the other end of the spectrum, a highly modular implementation offers
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ease of use and flexibility. This kind of implementation offers the ability
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to seamlessly and easily plug different security mechanisms and their implementations
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into the framework. </li>
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</ul>
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</div>
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<p>IBM<sup>®</sup> JGSS
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falls into the latter category. As a modular implementation, IBM JGSS leverages
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the provider framework defined by the Java™ Cryptographic Architecture (JCA) and
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treats any underlying mechanism as a (JCA) provider. A JGSS provider supplies
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a concrete implementation of a JGSS security mechanism. An application can
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instantiate and use multiple mechanisms.</p>
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<p>It is possible for a provider to support multiple mechanisms, and JGSS
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makes it easy to use different security mechanisms. However, the GSS-API does
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not provide a means for two communicating peers to choose a mechanism when
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multiple mechanisms are available. One way to choose a mechanism is to
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start with the Simple And Protected GSS-API Negotiating Mechanism (SPNEGO),
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a pseudo-mechanism that negotiates an actual mechanism between the two peers. IBM JGSS
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does not include a SPNEGO mechanism.</p>
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<p>For more information about SPNEGO, see Internet Engineering Task Force
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(IETF) RFC 2478 <a href="http://www.ietf.org/rfc/rfc2478.txt" target="_blank">The Simple and Protected GSS-API Negotiation Mechanism</a> </p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahajgssconcept.htm" title="JGSS operations consist of four distinct stages, as standardized by the Generic Security Service Application Programming Interface (GSS-API).">JGSS concepts</a></div>
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</div>
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</body>
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