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331 lines
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331 lines
14 KiB
HTML
<div class="header">
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<div class="subTitle">
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javax.crypto
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</div>
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<h2 class="title" title="Class MacSpi">Class MacSpi</h2>
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</div><div class="contentContainer">
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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.MacSpi</li>
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</ul> </li>
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</ul>
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<div class="description">
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<hr/> <br/> <pre>public abstract class <span class="typeNameLabel">MacSpi</span>
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extends <a href="../../java/lang/Object.html" title="class in java.lang">Object</a></pre>
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<div class="block">
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<span>这个类定义的 <span>（SPI）</span> <code>Mac</code>类。</span>
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<span>该类中的所有抽象方法必须由希望提供特定MAC算法的实现的每个加密服务提供商来实现。</span>
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<p> <span>实现可以实现Cloneable接口。</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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</dl> </li>
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</ul>
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</div>
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<div class="summary">
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<ul class="blockList">
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<li class="blockList">
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<ul class="blockList">
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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/MacSpi.html#MacSpi--">MacSpi</a></span>()</code> </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="t3"><span><a href="javascript:show(4);">抽象方法</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/lang/Object.html" title="class in java.lang">Object</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/MacSpi.html#clone--">clone</a></span>()</code>
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<div class="block">
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如果实现是可克隆的，则返回克隆。
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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>protected abstract byte[]</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/MacSpi.html#engineDoFinal--">engineDoFinal</a></span>()</code>
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<div class="block">
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完成MAC计算并重置MAC进一步使用，维护MAC初始化的秘密密钥。
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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>protected abstract int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/MacSpi.html#engineGetMacLength--">engineGetMacLength</a></span>()</code>
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<div class="block">
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以字节为单位返回MAC的长度。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i3">
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<td class="colFirst"><code>protected abstract void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/MacSpi.html#engineInit-java.security.Key-java.security.spec.AlgorithmParameterSpec-">engineInit</a></span>(<a href="../../java/security/Key.html" title="interface in java.security">Key</a> key, <a href="../../java/security/spec/AlgorithmParameterSpec.html" title="interface in java.security.spec">AlgorithmParameterSpec</a> params)</code>
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<div class="block">
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用给定（秘密）密钥和算法参数初始化MAC。
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</div> </td>
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</tr>
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<tr class="altColor" id="i4">
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<td class="colFirst"><code>protected abstract void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/MacSpi.html#engineReset--">engineReset</a></span>()</code>
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<div class="block">
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重置MAC进一步使用，维护MAC初始化的秘密密钥。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i5">
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<td class="colFirst"><code>protected abstract void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/MacSpi.html#engineUpdate-byte-">engineUpdate</a></span>(byte input)</code>
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<div class="block">
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处理给定的字节。
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</div> </td>
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</tr>
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<tr class="altColor" id="i6">
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<td class="colFirst"><code>protected abstract void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/MacSpi.html#engineUpdate-byte:A-int-int-">engineUpdate</a></span>(byte[] input, int offset, int len)</code>
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<div class="block">
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处理第一
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<code>len</code>字节
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<code>input</code> ，起始于
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<code>offset</code>以下。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i7">
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<td class="colFirst"><code>protected void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/MacSpi.html#engineUpdate-java.nio.ByteBuffer-">engineUpdate</a></span>(<a href="../../java/nio/ByteBuffer.html" title="class in java.nio">ByteBuffer</a> input)</code>
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<div class="block">
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处理
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<code>input.remaining()</code>字节的ByteBuffer
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<code>input</code> ，从
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<code>input.position()</code>开始。
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</div> </td>
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</tr>
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</tbody>
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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#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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<ul class="blockList">
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<li class="blockList">
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="constructor.detail">
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<!-- --> </a> <h3>构造方法详细信息</h3> <a name="MacSpi--">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>MacSpi</h4> <pre>public MacSpi()</pre> </li>
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</ul> </li>
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</ul>
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<!-- ============ METHOD DETAIL ========== -->
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<ul class="blockList">
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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="engineGetMacLength--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>engineGetMacLength</h4> <pre>protected abstract int engineGetMacLength()</pre>
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<div class="block">
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以字节为单位返回MAC的长度。
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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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MAC长度（以字节为单位）。
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</dd>
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</dl> </li>
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</ul> <a name="engineInit-java.security.Key-java.security.spec.AlgorithmParameterSpec-">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>engineInit</h4> <pre>protected abstract void engineInit(<a href="../../java/security/Key.html" title="interface in java.security">Key</a> key,
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<a href="../../java/security/spec/AlgorithmParameterSpec.html" title="interface in java.security.spec">AlgorithmParameterSpec</a> params)
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throws <a href="../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a>,
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<a href="../../java/security/InvalidAlgorithmParameterException.html" title="class in java.security">InvalidAlgorithmParameterException</a></pre>
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<div class="block">
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用给定（秘密）密钥和算法参数初始化MAC。
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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>key</code> - （秘密）键。
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</dd>
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<dd>
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<code>params</code> - 算法参数。
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</dd>
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<dt>
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<span class="throwsLabel">异常</span>
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</dt>
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<dd>
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<code><a href="../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></code> - 如果给定的密钥不适合初始化该MAC。
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</dd>
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<dd>
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<code><a href="../../java/security/InvalidAlgorithmParameterException.html" title="class in java.security">InvalidAlgorithmParameterException</a></code> - 如果给定的算法参数不适合该MAC。
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</dd>
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</dl> </li>
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</ul> <a name="engineUpdate-byte-">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>engineUpdate</h4> <pre>protected abstract void engineUpdate(byte input)</pre>
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<div class="block">
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处理给定的字节。
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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>input</code> - 要处理的输入字节。
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</dd>
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</dl> </li>
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</ul> <a name="engineUpdate-byte:A-int-int-">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>engineUpdate</h4> <pre>protected abstract void engineUpdate(byte[] input,
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int offset,
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int len)</pre>
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<div class="block">
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处理第一
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<code>len</code>字节
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<code>input</code> ，起始于
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<code>offset</code>以下。
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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>input</code> - 输入缓冲区。
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</dd>
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<dd>
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<code>offset</code> -
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<code>input</code>中输入开始的偏移量。
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</dd>
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<dd>
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<code>len</code> - 要处理的字节数。
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</dd>
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</dl> </li>
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</ul> <a name="engineUpdate-java.nio.ByteBuffer-">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>engineUpdate</h4> <pre>protected void engineUpdate(<a href="../../java/nio/ByteBuffer.html" title="class in java.nio">ByteBuffer</a> input)</pre>
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<div class="block">
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<span>处理<code>input.remaining()</code>字节的ByteBuffer <code>input</code> ，从<code>input.position()</code>开始。</span>
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<span>返回时，缓冲区的位置将等于其限制;</span>
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<span>其限制将不会改变。</span>
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<p> <span>子类应该考虑覆盖此方法，如果它们可以比字节数组更有效地处理ByteBuffers。</span> </p>
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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>input</code> - ByteBuffer
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</dd>
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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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1.5
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</dd>
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</dl> </li>
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</ul> <a name="engineDoFinal--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>engineDoFinal</h4> <pre>protected abstract byte[] engineDoFinal()</pre>
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<div class="block">
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完成MAC计算并重置MAC进一步使用，维护MAC初始化的秘密密钥。
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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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MAC结果。
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</dd>
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</dl> </li>
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</ul> <a name="engineReset--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>engineReset</h4> <pre>protected abstract void engineReset()</pre>
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<div class="block">
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重置MAC进一步使用，维护MAC初始化的秘密密钥。
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</div> </li>
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</ul> <a name="clone--">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>clone</h4> <pre>public <a href="../../java/lang/Object.html" title="class in java.lang">Object</a> clone()
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throws <a href="../../java/lang/CloneNotSupportedException.html" title="class in java.lang">CloneNotSupportedException</a></pre>
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<div class="block">
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如果实现是可克隆的，则返回克隆。
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</div>
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<dl>
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<dt>
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<span class="overrideSpecifyLabel">重写：</span>
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</dt>
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<dd>
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<code><a href="../../java/lang/Object.html#clone--">clone</a></code>在
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<code><a href="../../java/lang/Object.html" title="class in java.lang">Object</a></code>
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</dd>
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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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一个克隆，如果实现是可克隆的。
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</dd>
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<dt>
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<span class="throwsLabel">异常</span>
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</dt>
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<dd>
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<code><a href="../../java/lang/CloneNotSupportedException.html" title="class in java.lang">CloneNotSupportedException</a></code> - 如果这个调用不支持
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<code>Cloneable</code> 。
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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="../../java/lang/Cloneable.html" title="java.lang中的接口"><code>Cloneable</code></a></span>
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</dd>
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</dl> </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> |