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249 lines
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<div class="header">
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javax.crypto.spec
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<h2 class="title" title="Class DHParameterSpec">Class DHParameterSpec</h2>
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<ul class="inheritance">
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<li><a href="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
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<li>
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<ul class="inheritance">
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<li>javax.crypto.spec.DHParameterSpec</li>
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</ul> </li>
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<div class="description">
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<dl>
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<dt>
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All Implemented Interfaces:
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</dt>
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<dd>
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<span><a href="../../../java/security/spec/AlgorithmParameterSpec.html" title="java.security.spec中的接口">AlgorithmParameterSpec</a></span>
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</dd>
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</dl>
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<hr/> <br/> <pre>public class <span class="typeNameLabel">DHParameterSpec</span>
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extends <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>
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implements <a href="../../../java/security/spec/AlgorithmParameterSpec.html" title="interface in java.security.spec">AlgorithmParameterSpec</a></pre>
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<div class="block">
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<span>该类指定与PKCS＃3： <i>Diffie-Hellman密钥协商标准</i>中指定的Diffie-Hellman算法一起使用的参数集合。</span>
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<p> <span>中央权力机构生成参数并将其提供给寻求生成秘密密钥的两个实体。</span> <span>参数是素数<code>p</code> ，基数<code>g</code> ，以及私有值<code>l</code>长度（以位为<code>l</code> 。</span> </p>
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<p> <span>可能的是，多个参数实例可能由给定的中央机构生成，并且可能有多个中央权限。</span> <span>事实上，每个人都可能是自己的中央权威，不同的实体有不同的参数。</span> </p>
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<p> <span>请注意，此类不对指定的参数执行任何验证。</span> <span>因此，即使它们为空，也会直接返回指定的值。</span> </p>
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</div>
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<dl>
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<dt>
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<span class="simpleTagLabel">从以下版本开始：</span>
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</dt>
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<dd>
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1.4
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</dd>
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<dt>
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<span class="seeLabel">另请参见：</span>
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</dt>
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<dd>
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<span><a href="../../../javax/crypto/KeyAgreement.html" title="javax.crypto中的类"><code>KeyAgreement</code></a></span>
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</dd>
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</dl> </li>
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</ul>
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</div>
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<div class="summary">
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<li class="blockList"><a name="constructor.summary">
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<!-- --> </a> <h3>构造方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
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<caption>
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<span>构造方法</span>
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<span class="tabEnd"> </span>
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</caption>
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<tbody>
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<tr>
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<th class="colOne" scope="col">Constructor and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DHParameterSpec.html#DHParameterSpec-java.math.BigInteger-java.math.BigInteger-">DHParameterSpec</a></span>(<a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> p, <a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> g)</code>
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<div class="block">
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使用质数模数
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<code>p</code>和基本生成器
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<code>g</code> Diffie-Hellman的参数
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<code>g</code> 。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DHParameterSpec.html#DHParameterSpec-java.math.BigInteger-java.math.BigInteger-int-">DHParameterSpec</a></span>(<a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> p, <a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> g, int l)</code>
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<div class="block">
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构建了的Diffie-Hellman设置，使用质数模数的参数
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<code>p</code> ，基发生器
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<code>g</code> ，并且以位为单位的大小，
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<code>l</code> ，随机指数（私有值）。
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</div> </td>
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</tr>
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</tbody>
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</table> </li>
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</ul>
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<!-- ========== METHOD SUMMARY =========== -->
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<ul class="blockList">
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<li class="blockList"><a name="method.summary">
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<!-- --> </a> <h3>方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
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<caption>
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<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t4"><span><a href="javascript:show(8);">具体的方法</a></span><span class="tabEnd"> </span></span>
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</caption>
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<tbody>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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<tr class="altColor" id="i0">
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<td class="colFirst"><code><a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DHParameterSpec.html#getG--">getG</a></span>()</code>
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<div class="block">
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返回基本生成器
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<code>g</code> 。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i1">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DHParameterSpec.html#getL--">getL</a></span>()</code>
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<div class="block">
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返回随机指数（私有值）的大小（
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<code>l</code> ）。
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</div> </td>
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</tr>
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<tr class="altColor" id="i2">
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<td class="colFirst"><code><a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DHParameterSpec.html#getP--">getP</a></span>()</code>
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<div class="block">
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返回素数模数
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<code>p</code> 。
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</div> </td>
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</tr>
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</table>
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<ul class="blockList">
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<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
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<!-- --> </a> <h3>Methods inherited from class java.lang.<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></h3> <code><a href="../../../java/lang/Object.html#clone--">clone</a>, <a href="../../../java/lang/Object.html#equals-java.lang.Object-">equals</a>, <a href="../../../java/lang/Object.html#finalize--">finalize</a>, <a href="../../../java/lang/Object.html#getClass--">getClass</a>, <a href="../../../java/lang/Object.html#hashCode--">hashCode</a>, <a href="../../../java/lang/Object.html#notify--">notify</a>, <a href="../../../java/lang/Object.html#notifyAll--">notifyAll</a>, <a href="../../../java/lang/Object.html#toString--">toString</a>, <a href="../../../java/lang/Object.html#wait--">wait</a>, <a href="../../../java/lang/Object.html#wait-long-">wait</a>, <a href="../../../java/lang/Object.html#wait-long-int-">wait</a></code></li>
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</ul> </li>
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</ul> </li>
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</ul>
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</div>
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<div class="details">
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<!-- --> </a> <h3>构造方法详细信息</h3> <a name="DHParameterSpec-java.math.BigInteger-java.math.BigInteger-">
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<ul class="blockList">
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<li class="blockList"> <h4>DHParameterSpec</h4> <pre>public DHParameterSpec(<a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> p,
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<a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> g)</pre>
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<div class="block">
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使用质数模数
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<code>p</code>和基本发生器
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<code>g</code> Diffie-Hellman的参数
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<code>g</code> 。
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</div>
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<dl>
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<dt>
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<span class="paramLabel">参数</span>
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</dt>
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<dd>
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<code>p</code> - 质量模数
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</dd>
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<dd>
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<code>g</code> - 基地发电机
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</dd>
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</dl> </li>
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</ul> <a name="DHParameterSpec-java.math.BigInteger-java.math.BigInteger-int-">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>DHParameterSpec</h4> <pre>public DHParameterSpec(<a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> p,
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<a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> g,
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int l)</pre>
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<div class="block">
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构建了的Diffie-Hellman设置，使用质数模数的参数
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<code>p</code> ，基发生器
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<code>g</code> ，并且以位为单位的大小，
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<code>l</code> ，随机指数（私有值）。
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</div>
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<dl>
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<dt>
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<span class="paramLabel">参数</span>
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</dt>
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<dd>
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<code>p</code> - 质量模数
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</dd>
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<dd>
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<code>g</code> - 基地发电机
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</dd>
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<dd>
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<code>l</code> - 随机指数（私有值）的位大小
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</dd>
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</dl> </li>
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</ul>
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<!-- ============ METHOD DETAIL ========== -->
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<li class="blockList"><a name="method.detail">
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<!-- --> </a> <h3>方法详细信息</h3> <a name="getP--">
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<ul class="blockList">
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<li class="blockList"> <h4>getP</h4> <pre>public <a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> getP()</pre>
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<div class="block">
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返回素数模数
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<code>p</code> 。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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模数
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<code>p</code>
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</dd>
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</dl> </li>
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</ul> <a name="getG--">
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<ul class="blockList">
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<li class="blockList"> <h4>getG</h4> <pre>public <a href="../../../java/math/BigInteger.html" title="class in java.math">BigInteger</a> getG()</pre>
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<div class="block">
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返回基本生成器
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<code>g</code> 。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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基座发生器
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<code>g</code>
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</dd>
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</dl> </li>
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</ul> <a name="getL--">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>getL</h4> <pre>public int getL()</pre>
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<div class="block">
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返回随机指数（私有值）的位数（
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<code>l</code>的大小。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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随机指数（私有值）的大小，位数，
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<code>l</code> ，如果此大小尚未设置，则为0
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</dd>
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</dl> </li>
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</ul>
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