uTools-Manuals/docs/java/javax/crypto/SecretKey.html

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     javax.crypto 
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<h2 class="title" title="Interface SecretKey">Interface SecretKey</h2>
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         All Superinterfaces: 
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<span><a href="../../javax/security/auth/Destroyable.html" title="javax.security.auth中的接口">Destroyable</a> ， <a href="../../java/security/Key.html" title="java.security中的接口">Key</a> ， <a href="../../java/io/Serializable.html" title="java.io中的接口">Serializable</a></span>
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         All Known Subinterfaces: 
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<span><a href="../../javax/crypto/interfaces/PBEKey.html" title="javax.crypto.interfaces中的接口">PBEKey</a></span>
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        所有已知实现类：
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<span><a href="../../javax/security/auth/kerberos/KerberosKey.html" title="javax.security.auth.kerberos中的类">KerberosKey</a> ， <a href="../../javax/crypto/spec/SecretKeySpec.html" title="javax.crypto.spec中的类">SecretKeySpec</a></span>
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<hr/> <br/> <pre>public interface <span class="typeNameLabel">SecretKey</span>
extends <a href="../../java/security/Key.html" title="interface in java.security">Key</a>, <a href="../../javax/security/auth/Destroyable.html" title="interface in javax.security.auth">Destroyable</a></pre>
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<span>一个秘密（对称）键。</span>
<span>该接口的目的是为所有密钥接口分组（并提供类型安全性）。</span>
<p> <span>此接口的提供者实现必须覆盖<code>equals</code>种<code>hashCode</code>从继承的方法<a href="../../java/lang/Object.html" title="java.lang中的类"><code>Object</code></a>使密钥是基于其基础的关键材料相比，而不是基于参考。</span> <span>实现应该重写默认<code>destroy</code>种<code>isDestroyed</code>从方法<a href="../../javax/security/auth/Destroyable.html" title="javax.security.auth中的接口"><code>Destroyable</code></a>接口，使敏感的关键信息被销毁，清除，或在这些信息是不可变的，未引用的情况。</span> <span>最后，由于<code>SecretKey</code>是<code>Serializable</code> ，实现也应该覆盖<a href="../../java/io/ObjectOutputStream.html#writeObject-java.lang.Object-"><code>ObjectOutputStream.writeObject(java.lang.Object)</code></a>以防止被破坏的键被序列化。</span> </p>
<p> <span>实现此接口的密钥返回字符串<code>RAW</code>作为其编码格式（参见<code>getFormat</code> ），并返回原始密钥字节作为<code>getEncoded</code>方法调用的结果。</span> <span>（ <code>getFormat</code>和<code>getEncoded</code>方法从<a href="../../java/security/Key.html" title="java.security中的接口"><code>Key</code></a>父接口继承。）</span> </p>
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<span class="simpleTagLabel">从以下版本开始：</span>
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         1.4 
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<span class="seeLabel">另请参见：</span>
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<span><a href="../../javax/crypto/SecretKeyFactory.html" title="javax.crypto中的类"><code>SecretKeyFactory</code></a> ， <a href="../../javax/crypto/Cipher.html" title="javax.crypto中的类"><code>Cipher</code></a></span>
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<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/crypto/SecretKey.html#serialVersionUID">serialVersionUID</a></span></code>
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              从J2SE 1.4起设置为指示序列化兼容性的类指纹。 
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<li class="blockList"> <h4>serialVersionUID</h4> <pre>static final long serialVersionUID</pre>
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            从J2SE 1.4起设置为指示序列化兼容性的类指纹。 
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<span class="seeLabel">另请参见：</span>
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<a href="../../constant-values.html#javax.crypto.SecretKey.serialVersionUID">Constant Field Values</a>
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