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https://github.com/fofolee/uTools-Manuals.git
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270 lines
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270 lines
11 KiB
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<div class="header">
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<h1 class="title" title="Package">Package javax.crypto</h1>
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<div class="docSummary">
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<div class="block">
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提供加密操作的类和接口。
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<p>See: <a href="#package.description">描述</a></p>
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</div><div class="contentContainer">
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<ul class="blockList">
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<table border="0" cellpadding="3" cellspacing="0" class="typeSummary" summary="Interface Summary table, listing interfaces, and an explanation">
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<caption>
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<span>接口摘要</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="colFirst" scope="col">接口</th>
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<th class="colLast" scope="col">描述</th>
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</tr>
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</tbody>
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<tbody>
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<td class="colFirst"><a href="../../javax/crypto/SecretKey.html" title="interface in javax.crypto">SecretKey</a></td>
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<div class="block">
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一个秘密（对称）键。
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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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<li class="blockList">
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<table border="0" cellpadding="3" cellspacing="0" class="typeSummary" summary="Class Summary table, listing classes, and an explanation">
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<caption>
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<span>类摘要</span>
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<span class="tabEnd"> </span>
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</caption>
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<tbody>
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<th class="colFirst" scope="col">类</th>
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<th class="colLast" scope="col">描述</th>
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<tbody>
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<td class="colFirst"><a href="../../javax/crypto/Cipher.html" title="class in javax.crypto">Cipher</a></td>
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<div class="block">
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该类提供加密和解密的加密密码的功能。
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/CipherInputStream.html" title="class in javax.crypto">CipherInputStream</a></td>
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<div class="block">
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CipherInputStream由InputStream和Cipher组成，使得read（）方法返回从底层InputStream读入但是由Cipher额外处理的数据。
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/CipherOutputStream.html" title="class in javax.crypto">CipherOutputStream</a></td>
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<div class="block">
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CipherOutputStream由OutputStream和Cipher组成，以便write（）方法首先处理数据，然后再将它们写入底层的OutputStream。
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/CipherSpi.html" title="class in javax.crypto">CipherSpi</a></td>
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<div class="block">
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这个类定义的
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<span>（SPI）</span>
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<code>Cipher</code>类。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/EncryptedPrivateKeyInfo.html" title="class in javax.crypto">EncryptedPrivateKeyInfo</a></td>
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<div class="block">
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该类实现了PKCS＃8中定义的
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<code>EncryptedPrivateKeyInfo</code>类型。
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</div> </td>
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</tr>
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<td class="colFirst"><a href="../../javax/crypto/ExemptionMechanism.html" title="class in javax.crypto">ExemptionMechanism</a></td>
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<td class="colLast">
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<div class="block">
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这个类提供了豁免机制的功能，其中的例子是
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<i>密钥恢复</i> ，
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<i>密钥弱化</i>和
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<i>密钥托管</i> 。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/ExemptionMechanismSpi.html" title="class in javax.crypto">ExemptionMechanismSpi</a></td>
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<td class="colLast">
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<div class="block">
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这个类定义的
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<span>（SPI）</span>
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<code>ExemptionMechanism</code>类。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/KeyAgreement.html" title="class in javax.crypto">KeyAgreement</a></td>
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<td class="colLast">
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<div class="block">
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该类提供了密钥协议（或密钥交换）协议的功能。
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/KeyAgreementSpi.html" title="class in javax.crypto">KeyAgreementSpi</a></td>
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<td class="colLast">
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<div class="block">
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这个类定义的
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<span>（SPI）</span>
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<code>KeyAgreement</code>类。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/KeyGenerator.html" title="class in javax.crypto">KeyGenerator</a></td>
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<td class="colLast">
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<div class="block">
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该类提供了一个秘密（对称）密钥生成器的功能。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/KeyGeneratorSpi.html" title="class in javax.crypto">KeyGeneratorSpi</a></td>
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<td class="colLast">
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<div class="block">
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这个类定义的
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<span>（SPI）</span>
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<code>KeyGenerator</code>类。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/Mac.html" title="class in javax.crypto">Mac</a></td>
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<td class="colLast">
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<div class="block">
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该类提供了“消息验证码”（MAC）算法的功能。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/MacSpi.html" title="class in javax.crypto">MacSpi</a></td>
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<td class="colLast">
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<div class="block">
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这个类定义的
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<span>（SPI）</span>
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<code>Mac</code>类。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/NullCipher.html" title="class in javax.crypto">NullCipher</a></td>
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<td class="colLast">
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<div class="block">
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NullCipher类是提供“身份密码”的类，不会转换纯文本。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/SealedObject.html" title="class in javax.crypto">SealedObject</a></td>
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<td class="colLast">
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<div class="block">
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该类使程序员能够使用加密算法创建对象并保护其机密性。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/SecretKeyFactory.html" title="class in javax.crypto">SecretKeyFactory</a></td>
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<td class="colLast">
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<div class="block">
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这个类代表一个秘密密钥的工厂。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/SecretKeyFactorySpi.html" title="class in javax.crypto">SecretKeyFactorySpi</a></td>
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<td class="colLast">
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<div class="block">
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这个类定义的
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<span>（SPI）</span>
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<code>SecretKeyFactory</code>类。
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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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<li class="blockList">
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<table border="0" cellpadding="3" cellspacing="0" class="typeSummary" summary="Exception Summary table, listing exceptions, and an explanation">
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<caption>
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<span>异常摘要</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="colFirst" scope="col">异常</th>
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<th class="colLast" scope="col">描述</th>
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</tr>
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</tbody>
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<tbody>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/AEADBadTagException.html" title="class in javax.crypto">AEADBadTagException</a></td>
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<td class="colLast">
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<div class="block">
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<span>当以<a href="../../javax/crypto/Cipher.html" title="javax.crypto中的类">AEAD</a>模式运行的<code>Cipher</code>（例如GCM / CCM）无法验证提供的认证标签时，会抛出此异常。</span>
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/BadPaddingException.html" title="class in javax.crypto">BadPaddingException</a></td>
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<td class="colLast">
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<div class="block">
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当期望输入数据的特定填充机制但数据未正确填充时，会抛出此异常。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/ExemptionMechanismException.html" title="class in javax.crypto">ExemptionMechanismException</a></td>
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<td class="colLast">
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<div class="block">
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这是通用的ExemptionMechanism异常。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/IllegalBlockSizeException.html" title="class in javax.crypto">IllegalBlockSizeException</a></td>
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<td class="colLast">
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<div class="block">
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当提供给块密码的数据长度不正确时，抛出该异常，即与密码的块大小不匹配。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><a href="../../javax/crypto/NoSuchPaddingException.html" title="class in javax.crypto">NoSuchPaddingException</a></td>
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<td class="colLast">
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<div class="block">
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当请求特定的填充机制但在环境中不可用时抛出此异常。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><a href="../../javax/crypto/ShortBufferException.html" title="class in javax.crypto">ShortBufferException</a></td>
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<td class="colLast">
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<div class="block">
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当用户提供的输出缓冲区太短而不能保存操作结果时，抛出此异常。
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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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<a name="package.description">
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<!-- --> </a>
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<h2 title="Package javax.crypto Description">Package javax.crypto Description</h2>
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<div class="block">
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<span>提供加密操作的类和接口。</span>
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<span>此包中定义的加密操作包括加密，密钥生成和密钥协商以及消息认证码（MAC）生成。</span>
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<p> <span>对加密的支持包括对称，非对称，块和流密码。</span> <span>此包还支持安全流和密封对象。</span> </p>
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<p> <span>此包中提供的许多类都是基于提供者的。</span> <span>类本身定义了应用程序可以编写的编程接口。</span> <span>然后，实现本身可以由独立的第三方供应商编写，并根据需要无缝地插入。</span> <span>因此，应用程序开发人员可以利用任何数量的基于提供者的实现，而无需添加或重写代码。</span> </p>
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<h2> <span>包装规格</span> </h2>
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<ul>
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<li> <span><a href="../../../technotes/guides/security/StandardNames.html"><b> <b>Java<font size="-2"><sup>TM</sup></font> Cryptography Architecture Standard Algorithm Name Documentation</b></b></a></span> </li>
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<b> </b>
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</ul>
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<h2> <span>相关文档</span> </h2>
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<span>有关进一步的文档，请参阅：</span>
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<ul>
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<li> <span><a href="../../../technotes/guides/security/crypto/CryptoSpec.html"><b>Java<font size="-2"><sup>TM</sup></font> Cryptography Architecture (JCA) Reference Guide </b></a></span> </li>
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<li> <span><a href="../../../technotes/guides/security/crypto/HowToImplAProvider.html"><b>How to Implement a Provider in the Java<font size="-2"><sup>TM</sup></font> Cryptography Architecture </b></a></span> </li>
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</ul>
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</div>
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<b>
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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> </b>
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</div> |