mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-07-06 17:25:01 +08:00
330 lines
13 KiB
HTML
330 lines
13 KiB
HTML
<div class="header">
|
||
<div class="subTitle">
|
||
javax.crypto.spec
|
||
</div>
|
||
<h2 class="title" title="Class DESKeySpec">Class DESKeySpec</h2>
|
||
</div><div class="contentContainer">
|
||
<ul class="inheritance">
|
||
<li><a href="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
|
||
<li>
|
||
<ul class="inheritance">
|
||
<li>javax.crypto.spec.DESKeySpec</li>
|
||
</ul> </li>
|
||
</ul>
|
||
<div class="description">
|
||
<ul class="blockList">
|
||
<li class="blockList">
|
||
<dl>
|
||
<dt>
|
||
All Implemented Interfaces:
|
||
</dt>
|
||
<dd>
|
||
<span><a href="../../../java/security/spec/KeySpec.html" title="java.security.spec中的接口">KeySpec</a></span>
|
||
</dd>
|
||
</dl>
|
||
<hr/> <br/> <pre>public class <span class="typeNameLabel">DESKeySpec</span>
|
||
extends <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>
|
||
implements <a href="../../../java/security/spec/KeySpec.html" title="interface in java.security.spec">KeySpec</a></pre>
|
||
<div class="block">
|
||
该类指定一个DES密钥。
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="simpleTagLabel">从以下版本开始：</span>
|
||
</dt>
|
||
<dd>
|
||
1.4
|
||
</dd>
|
||
</dl> </li>
|
||
</ul>
|
||
</div>
|
||
<div class="summary">
|
||
<ul class="blockList">
|
||
<li class="blockList">
|
||
<!-- =========== FIELD SUMMARY =========== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="field.summary">
|
||
<!-- --> </a> <h3>Field Summary</h3>
|
||
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Field Summary table, listing fields, and an explanation">
|
||
<caption>
|
||
<span>Fields</span>
|
||
<span class="tabEnd"> </span>
|
||
</caption>
|
||
<tbody>
|
||
<tr>
|
||
<th class="colFirst" scope="col">Modifier and Type</th>
|
||
<th class="colLast" scope="col">Field and Description</th>
|
||
</tr>
|
||
<tr class="altColor">
|
||
<td class="colFirst"><code>static int</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DESKeySpec.html#DES_KEY_LEN">DES_KEY_LEN</a></span></code>
|
||
<div class="block">
|
||
定义DES密钥长度的常量（以字节为单位）。
|
||
</div> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table> </li>
|
||
</ul>
|
||
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="constructor.summary">
|
||
<!-- --> </a> <h3>构造方法摘要</h3>
|
||
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
|
||
<caption>
|
||
<span>构造方法</span>
|
||
<span class="tabEnd"> </span>
|
||
</caption>
|
||
<tbody>
|
||
<tr>
|
||
<th class="colOne" scope="col">Constructor and Description</th>
|
||
</tr>
|
||
<tr class="altColor">
|
||
<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DESKeySpec.html#DESKeySpec-byte:A-">DESKeySpec</a></span>(byte[] key)</code>
|
||
<div class="block">
|
||
创建使用前8个字节中一个DESKeySpec对象，
|
||
<code>key</code>作为DES密钥的密钥材料。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor">
|
||
<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DESKeySpec.html#DESKeySpec-byte:A-int-">DESKeySpec</a></span>(byte[] key, int offset)</code>
|
||
<div class="block">
|
||
创建使用前8个字节中一个DESKeySpec对象，
|
||
<code>key</code> ，在开始
|
||
<code>offset</code>以下，作为DES密钥的密钥材料。
|
||
</div> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table> </li>
|
||
</ul>
|
||
<!-- ========== METHOD SUMMARY =========== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="method.summary">
|
||
<!-- --> </a> <h3>方法摘要</h3>
|
||
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
|
||
<caption>
|
||
<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
|
||
<span class="tableTab" id="t1"><span><a href="javascript:show(1);">静态方法</a></span><span class="tabEnd"> </span></span>
|
||
<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
|
||
<span class="tableTab" id="t4"><span><a href="javascript:show(8);">具体的方法</a></span><span class="tabEnd"> </span></span>
|
||
</caption>
|
||
<tbody>
|
||
<tr>
|
||
<th class="colFirst" scope="col">Modifier and Type</th>
|
||
<th class="colLast" scope="col">Method and Description</th>
|
||
</tr>
|
||
<tr class="altColor" id="i0">
|
||
<td class="colFirst"><code>byte[]</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DESKeySpec.html#getKey--">getKey</a></span>()</code>
|
||
<div class="block">
|
||
返回DES密钥材料。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i1">
|
||
<td class="colFirst"><code>static boolean</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DESKeySpec.html#isParityAdjusted-byte:A-int-">isParityAdjusted</a></span>(byte[] key, int offset)</code>
|
||
<div class="block">
|
||
检查从
|
||
<code>offset</code>开始，给定的DES密钥材料是否进行奇偶校验调整。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i2">
|
||
<td class="colFirst"><code>static boolean</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/crypto/spec/DESKeySpec.html#isWeak-byte:A-int-">isWeak</a></span>(byte[] key, int offset)</code>
|
||
<div class="block">
|
||
检查给定的DES密钥材料是弱还是弱弱。
|
||
</div> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
|
||
<!-- --> </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>
|
||
</ul> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
</div>
|
||
<div class="details">
|
||
<ul class="blockList">
|
||
<li class="blockList">
|
||
<!-- ============ FIELD DETAIL =========== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="field.detail">
|
||
<!-- --> </a> <h3>字段详细信息</h3> <a name="DES_KEY_LEN">
|
||
<!-- --> </a>
|
||
<ul class="blockListLast">
|
||
<li class="blockList"> <h4>DES_KEY_LEN</h4> <pre>public static final int DES_KEY_LEN</pre>
|
||
<div class="block">
|
||
定义DES密钥长度的常量（以字节为单位）。
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../constant-values.html#javax.crypto.spec.DESKeySpec.DES_KEY_LEN">Constant Field Values</a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
<!-- ========= CONSTRUCTOR DETAIL ======== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="constructor.detail">
|
||
<!-- --> </a> <h3>构造方法详细信息</h3> <a name="DESKeySpec-byte:A-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>DESKeySpec</h4> <pre>public DESKeySpec(byte[] key)
|
||
throws <a href="../../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></pre>
|
||
<div class="block">
|
||
<span>创建使用前8个字节中一个DESKeySpec对象， <code>key</code>作为DES密钥的密钥材料。</span>
|
||
<p> <span>构成该DES密钥的字节在之间<code>key[0]</code>和<code>key[7]</code>以下。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<span><code>key</code> - 具有DES密钥资料的缓冲区。</span>
|
||
<span>复制缓冲区的前8个字节以防止后续修改。</span>
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/lang/NullPointerException.html" title="class in java.lang">NullPointerException</a></code> - 如果给定的键材料是
|
||
<code>null</code>
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></code> - 如果给定的密钥材料短于8个字节。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="DESKeySpec-byte:A-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockListLast">
|
||
<li class="blockList"> <h4>DESKeySpec</h4> <pre>public DESKeySpec(byte[] key,
|
||
int offset)
|
||
throws <a href="../../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></pre>
|
||
<div class="block">
|
||
<span>创建使用前8个字节中一个DESKeySpec对象， <code>key</code> ，在开始<code>offset</code>以下，作为DES密钥的密钥材料。</span>
|
||
<p> <span>构成该DES密钥的字节在之间<code>key[offset]</code>和<code>key[offset+7]</code>以下。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<span><code>key</code> - 具有DES密钥资料的缓冲区。</span>
|
||
<span>前8个字节在开始缓冲的<code>offset</code>包容被复制到防止后续修改。</span>
|
||
</dd>
|
||
<dd>
|
||
<code>offset</code> - 偏移在
|
||
<code>key</code> ，其中DES密钥材料启动。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/lang/NullPointerException.html" title="class in java.lang">NullPointerException</a></code> - 如果给定的密钥材料是
|
||
<code>null</code>
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></code> - 如果从
|
||
<code>offset</code>开始，给定的密钥资料短于8个字节。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
<!-- ============ METHOD DETAIL ========== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="method.detail">
|
||
<!-- --> </a> <h3>方法详细信息</h3> <a name="getKey--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>getKey</h4> <pre>public byte[] getKey()</pre>
|
||
<div class="block">
|
||
返回DES密钥材料。
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
<span>DES的关键材料。</span>
|
||
<span>每次调用此方法时都会返回一个新数组。</span>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="isParityAdjusted-byte:A-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>isParityAdjusted</h4> <pre>public static boolean isParityAdjusted(byte[] key,
|
||
int offset)
|
||
throws <a href="../../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></pre>
|
||
<div class="block">
|
||
检查给定的DES密钥材料，从
|
||
<code>offset</code>包括起始）进行奇偶校验调整。
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>key</code> - 具有DES密钥资料的缓冲区。
|
||
</dd>
|
||
<dd>
|
||
<code>offset</code> - 偏移量在
|
||
<code>key</code> ，其中DES密钥材料启动。
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
如果给定的DES密钥材料是奇偶校验调整的，则为真，否则为false。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></code> - 如果给定的密钥资料是
|
||
<code>null</code> ，或从
|
||
<code>offset</code>开始，短于8个字节。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="isWeak-byte:A-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockListLast">
|
||
<li class="blockList"> <h4>isWeak</h4> <pre>public static boolean isWeak(byte[] key,
|
||
int offset)
|
||
throws <a href="../../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></pre>
|
||
<div class="block">
|
||
检查给定的DES密钥材料是弱还是弱弱。
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>key</code> - 具有DES密钥资料的缓冲区。
|
||
</dd>
|
||
<dd>
|
||
<code>offset</code> - 偏移在
|
||
<code>key</code> ，其中DES密钥材料启动。
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
如果给定的DES密钥材料为弱或半弱，则为真，否则为false。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/security/InvalidKeyException.html" title="class in java.security">InvalidKeyException</a></code> - 如果给定的密钥材料是
|
||
<code>null</code> ，或从
|
||
<code>offset</code>开始，短于8个字节。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
</div>
|
||
</div> |