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| <div class="subTitle">org.apache.shiro.crypto</div> |
| <h2 title="Class DefaultBlockCipherService" class="title">Class DefaultBlockCipherService</h2> |
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| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto">org.apache.shiro.crypto.JcaCipherService</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../org/apache/shiro/crypto/AbstractSymmetricCipherService.html" title="class in org.apache.shiro.crypto">org.apache.shiro.crypto.AbstractSymmetricCipherService</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.shiro.crypto.DefaultBlockCipherService</li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../org/apache/shiro/crypto/CipherService.html" title="interface in org.apache.shiro.crypto">CipherService</a></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../org/apache/shiro/crypto/AesCipherService.html" title="class in org.apache.shiro.crypto">AesCipherService</a>, <a href="../../../../org/apache/shiro/crypto/BlowfishCipherService.html" title="class in org.apache.shiro.crypto">BlowfishCipherService</a></dd> |
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| <br> |
| <pre>public class <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.133">DefaultBlockCipherService</a> |
| extends <a href="../../../../org/apache/shiro/crypto/AbstractSymmetricCipherService.html" title="class in org.apache.shiro.crypto">AbstractSymmetricCipherService</a></pre> |
| <div class="block">Base abstract class for block cipher algorithms. |
| |
| <h2>Usage</h2> |
| Note that this class exists mostly to simplify algorithm-specific subclasses. Unless you understand the concepts of |
| cipher modes of operation, block sizes, and padding schemes, and you want direct control of these things, you should |
| typically not uses instances of this class directly. Instead, algorithm-specific subclasses, such as |
| <a href="../../../../org/apache/shiro/crypto/AesCipherService.html" title="class in org.apache.shiro.crypto"><code>AesCipherService</code></a>, <a href="../../../../org/apache/shiro/crypto/BlowfishCipherService.html" title="class in org.apache.shiro.crypto"><code>BlowfishCipherService</code></a>, and others are usually better suited for regular use. |
| <p/> |
| However, if you have the need to create a custom block cipher service where no sufficient algorithm-specific subclass |
| exists in Shiro, this class would be very useful. |
| |
| <h2>Configuration</h2> |
| Block ciphers can accept configuration parameters that direct how they operate. These parameters concatenated |
| together in a single String comprise what the JDK JCA documentation calls a |
| <a href="http://java.sun.com/javase/6/docs/technotes/guides/security/crypto/CryptoSpec.html#trans">transformation |
| string</a>. We think that it is better for Shiro to construct this transformation string automatically based on its |
| constituent parts instead of having the end-user construct the string manually, which may be error prone or |
| confusing. To that end, Shiro <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html" title="class in org.apache.shiro.crypto"><code>DefaultBlockCipherService</code></a>s have attributes that can be set individually in |
| a type-safe manner based on your configuration needs, and Shiro will build the transformation string for you. |
| <p/> |
| The following sections typically document the configuration options for block (byte array) |
| <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a> method invocations. Streaming configuration |
| for those same attributes are done via mirrored <code>streaming</code>* attributes, and their purpose is identical, but |
| they're only used during streaming <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(java.io.InputStream, java.io.OutputStream, byte[])"><code>JcaCipherService.encrypt(java.io.InputStream, java.io.OutputStream, byte[])</code></a> and |
| <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(java.io.InputStream, java.io.OutputStream, byte[])"><code>JcaCipherService.decrypt(java.io.InputStream, java.io.OutputStream, byte[])</code></a> methods. See the "Streaming" |
| section below for more. |
| |
| <h3>Block Size</h3> |
| The block size specifies the number of bits (not bytes) that the cipher operates on when performing an operation. |
| It can be specified explicitly via the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setBlockSize(int)"><code>blockSize</code></a> attribute. If not set, the JCA Provider |
| default will be used based on the cipher algorithm. Block sizes are usually very algorithm specific, so set this |
| value only if you know you don't want the JCA Provider's default for the desired algorithm. For example, the |
| AES algorithm's Rijndael implementation <em>only</em> supports a 128 bit block size and will not work with any other |
| size. |
| <p/> |
| Also note that the <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#setInitializationVectorSize(int)"><code>initializationVectorSize</code></a> is usually the same as the |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setBlockSize(int)"><code>blockSize</code></a> in block ciphers. If you change either attribute, you should ensure that the other |
| attribute is correct for the target cipher algorithm. |
| |
| <h3>Operation Mode</h3> |
| You may set the block cipher's<a href="http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation">mode of |
| operation</a> via the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setMode(org.apache.shiro.crypto.OperationMode)"><code>mode</code></a> attribute, which accepts a type-safe |
| <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>OperationMode</code></a> enum instance. This type safety helps avoid typos when specifying the mode and |
| guarantees that the mode name will be recognized by the underlying JCA Provider. |
| <p/> |
| <b>*</b>If no operation mode is specified, Shiro defaults all of its block <code>CipherService</code> instances to the |
| <a href="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><code>CBC</code></a> mode, specifically to support auto-generation of initialization vectors during |
| encryption. This is different than the JDK's default <a href="../../../../org/apache/shiro/crypto/OperationMode.html#ECB"><code>ECB</code></a> mode because <code>ECB</code> does |
| not support initialization vectors, which are necessary for strong encryption. See the |
| <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto"><code>JcaCipherService parent class</code></a> class JavaDoc for an extensive |
| explanation on why we do this and why we do not use the Sun <code>ECB</code> default. You also might also want read |
| the <a href="http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29">Wikipedia |
| section on ECB<a/> and look at the encrypted image to see an example of why <code>ECB</code> should not be used in |
| security-sensitive environments. |
| <p/> |
| In the rare case that you need to override the default with a mode not represented |
| by the <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>OperationMode</code></a> enum, you may specify the raw mode name string that will be recognized by your JCA |
| provider via the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setModeName(java.lang.String)"><code>modeName</code></a> attribute. Because this is not type-safe, it is recommended only to |
| use this attribute if the <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>OperationMode</code></a> enum does not represent your desired mode. |
| <p/> |
| <b>NOTE:</b> If you change the mode to one that does not support initialization vectors (such as |
| <a href="../../../../org/apache/shiro/crypto/OperationMode.html#ECB"><code>ECB</code></a> or <a href="../../../../org/apache/shiro/crypto/OperationMode.html#NONE"><code>NONE</code></a>), you <em>must</em> turn off auto-generated |
| initialization vectors by setting <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#setGenerateInitializationVectors(boolean)"><code>generateInitializationVectors</code></a> |
| to <code>false</code>. Abandoning initialization vectors significantly weakens encryption, so think twice before |
| disabling this feature. |
| |
| <h3>Padding Scheme</h3> |
| Because block ciphers process messages in fixed-length blocks, if the final block in a message is not equal to the |
| block length, <a href="http://en.wikipedia.org/wiki/Padding_(cryptography)">padding</a> is applied to match that |
| size to maintain the total length of the message. This is good because it protects data patterns from being |
| identified - when all chunks look the same length, it is much harder to infer what that data might be. |
| <p/> |
| You may set a padding scheme via the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"><code>paddingScheme</code></a> attribute, which |
| accepts a type-safe <a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto"><code>PaddingScheme</code></a> enum instance. Like the <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>OperationMode</code></a> enum, |
| this enum offers type safety to help avoid typos and guarantees that the mode will be recongized by the underlying |
| JCA provider. |
| <p/> |
| <b>*</b>If no padding scheme is specified, this class defaults to the <a href="../../../../org/apache/shiro/crypto/PaddingScheme.html#PKCS5"><code>PaddingScheme.PKCS5</code></a> scheme, specifically |
| to be compliant with the default behavior of auto-generating initialization vectors during encryption (see the |
| <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto"><code>JcaCipherService parent class</code></a> class JavaDoc for why). |
| <p/> |
| In the rare case that you need to override the default with a scheme not represented by the <a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto"><code>PaddingScheme</code></a> |
| enum, you may specify the raw padding scheme name string that will be recognized by your JCA provider via the |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"><code>paddingSchemeName</code></a> attribute. Because this is not type-safe, it is recommended only to |
| use this attribute if the <a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto"><code>PaddingScheme</code></a> enum does not represent your desired scheme. |
| |
| <h2>Streaming</h2> |
| Most people don't think of using block ciphers as stream ciphers, since their name implies working |
| with block data (i.e. byte arrays) only. However, block ciphers can be turned into byte-oriented stream ciphers by |
| using an appropriate <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>operation mode</code></a> with a <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingBlockSize()"><code>streaming block size</code></a> |
| of 8 bits. This is why the <a href="../../../../org/apache/shiro/crypto/CipherService.html" title="interface in org.apache.shiro.crypto"><code>CipherService</code></a> interface provides both block and streaming operations. |
| <p/> |
| Because this streaming 8-bit block size rarely changes across block-cipher algorithms, default values have been set |
| for all three streaming configuration parameters. The defaults are: |
| <ul> |
| <li><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingBlockSize(int)"><code>streamingBlockSize</code></a> = <code>8</code> (bits)</li> |
| <li><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingMode(org.apache.shiro.crypto.OperationMode)"><code>streamingMode</code></a> = <a href="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><code>CBC</code></a></li> |
| <li><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"><code>streamingPaddingScheme</code></a> = <a href="../../../../org/apache/shiro/crypto/PaddingScheme.html#PKCS5"><code>PKCS5</code></a></li> |
| </ul> |
| <p/> |
| These attributes have the same meaning as the <code>mode</code>, <code>blockSize</code>, and <code>paddingScheme</code> attributes |
| described above, but they are applied during streaming method invocations only (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(java.io.InputStream, java.io.OutputStream, byte[])"><code>JcaCipherService.encrypt(java.io.InputStream, java.io.OutputStream, byte[])</code></a> |
| and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(java.io.InputStream, java.io.OutputStream, byte[])"><code>JcaCipherService.decrypt(java.io.InputStream, java.io.OutputStream, byte[])</code></a>).</div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>1.0</dd> |
| <dt><span class="strong">See Also:</span></dt><dd><a href="../../../../org/apache/shiro/crypto/BlowfishCipherService.html" title="class in org.apache.shiro.crypto"><code>BlowfishCipherService</code></a>, |
| <a href="../../../../org/apache/shiro/crypto/AesCipherService.html" title="class in org.apache.shiro.crypto"><code>AesCipherService</code></a>, |
| <a href="http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation">Wikipedia: Block Cipher Modes of Operation</a></dd></dl> |
| </li> |
| </ul> |
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| <h3>Constructor Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#DefaultBlockCipherService(java.lang.String)">DefaultBlockCipherService</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> algorithmName)</code> |
| <div class="block">Creates a new <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html" title="class in org.apache.shiro.crypto"><code>DefaultBlockCipherService</code></a> using the specified block cipher <code>algorithmName</code>.</div> |
| </td> |
| </tr> |
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| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected byte[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#generateInitializationVector(boolean)">generateInitializationVector</a></strong>(boolean streaming)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getBlockSize()">getBlockSize</a></strong>()</code> |
| <div class="block">Returns the block cipher's block size to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string or <code>0</code> if the JCA Provider default block size |
| for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getModeName()">getModeName</a></strong>()</code> |
| <div class="block">Returns the cipher operation mode name (as a String) to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string or <code>null</code> if the JCA Provider default mode for |
| the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getPaddingSchemeName()">getPaddingSchemeName</a></strong>()</code> |
| <div class="block">Returns the cipher algorithm padding scheme name (as a String) to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string or <code>null</code> if the JCA Provider default mode for |
| the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingBlockSize()">getStreamingBlockSize</a></strong>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingModeName()">getStreamingModeName</a></strong>()</code> |
| <div class="block">Same purpose as the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getModeName()"><code>modeName</code></a> attribute, but is used instead only for for streaming |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(java.io.InputStream, java.io.OutputStream, byte[])"><code>JcaCipherService.encrypt(java.io.InputStream, java.io.OutputStream, byte[])</code></a> and |
| <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(java.io.InputStream, java.io.OutputStream, byte[])"><code>JcaCipherService.decrypt(java.io.InputStream, java.io.OutputStream, byte[])</code></a>).</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingPaddingSchemeName()">getStreamingPaddingSchemeName</a></strong>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getTransformationString(boolean)">getTransformationString</a></strong>(boolean streaming)</code> |
| <div class="block">Returns the transformation string to use with the <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true#getInstance(java.lang.String)" title="class or interface in javax.crypto"><code>Cipher.getInstance(java.lang.String)</code></a> call.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#isGenerateInitializationVectors(boolean)">isGenerateInitializationVectors</a></strong>(boolean streaming)</code> |
| <div class="block">Overrides the parent implementation to ensure initialization vectors are always generated if streaming is |
| enabled (block ciphers <em>must</em> use initialization vectors if they are to be used as a stream cipher).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setBlockSize(int)">setBlockSize</a></strong>(int blockSize)</code> |
| <div class="block">Sets the block cipher's block size to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setMode(org.apache.shiro.crypto.OperationMode)">setMode</a></strong>(<a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto">OperationMode</a> mode)</code> |
| <div class="block">Sets the cipher operation mode of operation to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setModeName(java.lang.String)">setModeName</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> modeName)</code> |
| <div class="block">Sets the cipher operation mode name to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)">setPaddingScheme</a></strong>(<a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto">PaddingScheme</a> paddingScheme)</code> |
| <div class="block">Sets the padding scheme to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingSchemeName(java.lang.String)">setPaddingSchemeName</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> paddingSchemeName)</code> |
| <div class="block">Sets the padding scheme name to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>null</code> if the JCA Provider default mode for |
| the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingBlockSize(int)">setStreamingBlockSize</a></strong>(int streamingBlockSize)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingMode(org.apache.shiro.crypto.OperationMode)">setStreamingMode</a></strong>(<a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto">OperationMode</a> mode)</code> |
| <div class="block">Sets the transformation string mode to be used for streaming operations only.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingModeName(java.lang.String)">setStreamingModeName</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> streamingModeName)</code> |
| <div class="block">Sets the transformation string mode name to be used for streaming operations only.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingPaddingScheme(org.apache.shiro.crypto.PaddingScheme)">setStreamingPaddingScheme</a></strong>(<a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto">PaddingScheme</a> scheme)</code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingPaddingSchemeName(java.lang.String)">setStreamingPaddingSchemeName</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> streamingPaddingSchemeName)</code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods_inherited_from_class_org.apache.shiro.crypto.AbstractSymmetricCipherService"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.shiro.crypto.<a href="../../../../org/apache/shiro/crypto/AbstractSymmetricCipherService.html" title="class in org.apache.shiro.crypto">AbstractSymmetricCipherService</a></h3> |
| <code><a href="../../../../org/apache/shiro/crypto/AbstractSymmetricCipherService.html#generateNewKey()">generateNewKey</a>, <a href="../../../../org/apache/shiro/crypto/AbstractSymmetricCipherService.html#generateNewKey(int)">generateNewKey</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods_inherited_from_class_org.apache.shiro.crypto.JcaCipherService"> |
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| </a> |
| <h3>Methods inherited from class org.apache.shiro.crypto.<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto">JcaCipherService</a></h3> |
| <code><a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])">decrypt</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(java.io.InputStream, java.io.OutputStream, byte[])">decrypt</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])">encrypt</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(java.io.InputStream, java.io.OutputStream, byte[])">encrypt</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#ensureSecureRandom()">ensureSecureRandom</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()">getAlgorithmName</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getDefaultSecureRandom()">getDefaultSecureRandom</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getInitializationVectorSize()">getInitializationVectorSize</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getKeySize()">getKeySize</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getSecureRandom()">getSecureRandom</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getStreamingBufferSize()">getStreamingBufferSize</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#isGenerateInitializationVectors()">isGenerateInitializationVectors</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#setGenerateInitializationVectors(boolean)">setGenerateInitializationVectors</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#setInitializationVectorSize(int)">setInitializationVectorSize</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#setKeySize(int)">setKeySize</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#setSecureRandom(java.security.SecureRandom)">setSecureRandom</a>, <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#setStreamingBufferSize(int)">setStreamingBufferSize</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <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="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor_detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="DefaultBlockCipherService(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>DefaultBlockCipherService</h4> |
| <pre>public <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.164">DefaultBlockCipherService</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> algorithmName)</pre> |
| <div class="block">Creates a new <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html" title="class in org.apache.shiro.crypto"><code>DefaultBlockCipherService</code></a> using the specified block cipher <code>algorithmName</code>. Per this |
| class's JavaDoc, this constructor also sets the following defaults: |
| <ul> |
| <li><code>streamingMode</code> = <a href="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><code>CBC</code></a></li> |
| <li><code>streamingPaddingScheme</code> = <a href="../../../../org/apache/shiro/crypto/PaddingScheme.html#NONE"><code>none</code></a></li> |
| <li><code>streamingBlockSize</code> = 8</li> |
| </ul> |
| All other attributes are null/unset, indicating the JCA Provider defaults will be used.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>algorithmName</code> - the block cipher algorithm to use when encrypting and decrypting</dd></dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method_detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="getModeName()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getModeName</h4> |
| <pre>public <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.192">getModeName</a>()</pre> |
| <div class="block">Returns the cipher operation mode name (as a String) to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string or <code>null</code> if the JCA Provider default mode for |
| the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used. |
| <p/> |
| This attribute is used <em>only</em> when constructing the transformation string for block (byte array) |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a>). The |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingModeName()"><code>streamingModeName</code></a> attribute is used when the block cipher is used for |
| streaming operations. |
| <p/> |
| The default value is <code>null</code> to retain the JCA Provider default.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>the cipher operation mode name (as a String) to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>null</code> if the JCA Provider default |
| mode for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</dd></dl> |
| </li> |
| </ul> |
| <a name="setModeName(java.lang.String)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setModeName</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.218">setModeName</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> modeName)</pre> |
| <div class="block">Sets the cipher operation mode name to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string. A <code>null</code> value indicates that the JCA Provider |
| default mode for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used. |
| <p/> |
| This attribute is used <em>only</em> when constructing the transformation string for block (byte array) |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a>). The |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingModeName()"><code>streamingModeName</code></a> attribute is used when the block cipher is used for |
| streaming operations. |
| <p/> |
| The default value is <code>null</code> to retain the JCA Provider default. |
| <p/> |
| <b>NOTE:</b> most standard mode names are represented by the <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>OperationMode</code></a> enum. That enum |
| should be used with the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setMode(org.apache.shiro.crypto.OperationMode)"><code>mode</code></a> attribute when possible to retain type-safety and reduce the |
| possibility of errors. This method is better used if the <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>OperationMode</code></a> enum does not represent the |
| necessary mode.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>modeName</code> - the cipher operation mode name to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>null</code> if the JCA Provider |
| default mode for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setMode(org.apache.shiro.crypto.OperationMode)"><code>setMode(org.apache.shiro.crypto.OperationMode)</code></a></dd></dl> |
| </li> |
| </ul> |
| <a name="setMode(org.apache.shiro.crypto.OperationMode)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setMode</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.242">setMode</a>(<a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto">OperationMode</a> mode)</pre> |
| <div class="block">Sets the cipher operation mode of operation to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string. A <code>null</code> value indicates that the JCA Provider |
| default mode for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used. |
| <p/> |
| This attribute is used <em>only</em> when constructing the transformation string for block (byte array) |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a>). The |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingMode(org.apache.shiro.crypto.OperationMode)"><code>streamingMode</code></a> attribute is used when the block cipher is used for |
| streaming operations. |
| <p/> |
| If the <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>OperationMode</code></a> enum cannot represent your desired mode, you can set the name explicitly |
| via the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setModeName(java.lang.String)"><code>modeName</code></a> attribute directly. However, because <a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto"><code>OperationMode</code></a> represents all |
| standard JDK mode names already, ensure that your underlying JCA Provider supports the non-standard name first.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>mode</code> - the cipher operation mode to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>null</code> if the JCA Provider |
| default mode for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</dd></dl> |
| </li> |
| </ul> |
| <a name="getPaddingSchemeName()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPaddingSchemeName</h4> |
| <pre>public <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.262">getPaddingSchemeName</a>()</pre> |
| <div class="block">Returns the cipher algorithm padding scheme name (as a String) to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string or <code>null</code> if the JCA Provider default mode for |
| the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used. |
| <p/> |
| This attribute is used <em>only</em> when constructing the transformation string for block (byte array) |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a>). The |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingPaddingSchemeName()"><code>streamingPaddingSchemeName</code></a> attribute is used when the block cipher is |
| used for streaming operations. |
| <p/> |
| The default value is <code>null</code> to retain the JCA Provider default.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>the padding scheme name (as a String) to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>null</code> if the JCA Provider default |
| padding scheme for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</dd></dl> |
| </li> |
| </ul> |
| <a name="setPaddingSchemeName(java.lang.String)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setPaddingSchemeName</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.289">setPaddingSchemeName</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> paddingSchemeName)</pre> |
| <div class="block">Sets the padding scheme name to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>null</code> if the JCA Provider default mode for |
| the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used. |
| <p/> |
| This attribute is used <em>only</em> when constructing the transformation string for block (byte array) |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a>). The |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingPaddingSchemeName()"><code>streamingPaddingSchemeName</code></a> attribute is used when the block cipher is |
| used for streaming operations. |
| <p/> |
| The default value is <code>null</code> to retain the JCA Provider default. |
| <p/> |
| <b>NOTE:</b> most standard padding schemes are represented by the <a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto"><code>PaddingScheme</code></a> enum. |
| That enum should be used with the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"><code>paddingScheme</code></a> attribute when possible to retain |
| type-safety and reduce the possibility of errors. Calling this method however is suitable if the |
| <code>PaddingScheme</code> enum does not represent the desired scheme.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>paddingSchemeName</code> - the padding scheme name to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>null</code> if the JCA |
| Provider default padding scheme for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> |
| should be used.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"><code>setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)</code></a></dd></dl> |
| </li> |
| </ul> |
| <a name="setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setPaddingScheme</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.314">setPaddingScheme</a>(<a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto">PaddingScheme</a> paddingScheme)</pre> |
| <div class="block">Sets the padding scheme to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string. A <code>null</code> value indicates that the JCA Provider |
| default padding scheme for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used. |
| <p/> |
| This attribute is used <em>only</em> when constructing the transformation string for block (byte array) |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a>). The |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"><code>streamingPaddingScheme</code></a> attribute is used when the block cipher is used for |
| streaming operations. |
| <p/> |
| If the <a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto"><code>PaddingScheme</code></a> enum does represent your desired scheme, you can set the name explicitly |
| via the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingSchemeName(java.lang.String)"><code>paddingSchemeName</code></a> attribute directly. However, because |
| <code>PaddingScheme</code> represents all standard JDK scheme names already, ensure that your underlying JCA Provider |
| supports the non-standard name first.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>paddingScheme</code> - the padding scheme to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>null</code> if the JCA Provider |
| default padding scheme for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</dd></dl> |
| </li> |
| </ul> |
| <a name="getBlockSize()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getBlockSize</h4> |
| <pre>public int <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.334">getBlockSize</a>()</pre> |
| <div class="block">Returns the block cipher's block size to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string or <code>0</code> if the JCA Provider default block size |
| for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used. |
| <p/> |
| This attribute is used <em>only</em> when constructing the transformation string for block (byte array) |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a>). The |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingBlockSize()"><code>streamingBlockSize</code></a> attribute is used when the block cipher is used for |
| streaming operations. |
| <p/> |
| The default value is <code>0</code> which retains the JCA Provider default.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>the block cipher block size to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>0</code> if the JCA Provider default |
| block size for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</dd></dl> |
| </li> |
| </ul> |
| <a name="setBlockSize(int)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setBlockSize</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.357">setBlockSize</a>(int blockSize)</pre> |
| <div class="block">Sets the block cipher's block size to be used when constructing |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string. <code>0</code> indicates that the JCA Provider default |
| block size for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used. |
| <p/> |
| This attribute is used <em>only</em> when constructing the transformation string for block (byte array) |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(byte[], byte[])"><code>JcaCipherService.encrypt(byte[], byte[])</code></a> and <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(byte[], byte[])"><code>JcaCipherService.decrypt(byte[], byte[])</code></a>). The |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingBlockSize()"><code>streamingBlockSize</code></a> attribute is used when the block cipher is used for |
| streaming operations. |
| <p/> |
| The default value is <code>0</code> which retains the JCA Provider default. |
| <p/> |
| <b>NOTE:</b> block cipher block sizes are very algorithm-specific. If you change this value, ensure that it |
| will work with the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a>.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>blockSize</code> - the block cipher block size to be used when constructing the |
| <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true" title="class or interface in javax.crypto"><code>Cipher</code></a> transformation string, or <code>0</code> if the JCA Provider |
| default block size for the specified <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getAlgorithmName()"><code>algorithm</code></a> should be used.</dd></dl> |
| </li> |
| </ul> |
| <a name="getStreamingModeName()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getStreamingModeName</h4> |
| <pre>public <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.374">getStreamingModeName</a>()</pre> |
| <div class="block">Same purpose as the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getModeName()"><code>modeName</code></a> attribute, but is used instead only for for streaming |
| operations (<a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#encrypt(java.io.InputStream, java.io.OutputStream, byte[])"><code>JcaCipherService.encrypt(java.io.InputStream, java.io.OutputStream, byte[])</code></a> and |
| <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#decrypt(java.io.InputStream, java.io.OutputStream, byte[])"><code>JcaCipherService.decrypt(java.io.InputStream, java.io.OutputStream, byte[])</code></a>). |
| <p/> |
| Note that unlike the <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getModeName()"><code>modeName</code></a> attribute, the default value of this attribute is not |
| <code>null</code> - it is <a href="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><code>CBC</code></a> for reasons described in the class-level JavaDoc in the |
| <code>Streaming</code> section.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>the transformation string mode name to be used for streaming operations only.</dd></dl> |
| </li> |
| </ul> |
| <a name="setStreamingModeName(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setStreamingModeName</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.390">setStreamingModeName</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> streamingModeName)</pre> |
| <div class="block">Sets the transformation string mode name to be used for streaming operations only. The default value is |
| <a href="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><code>CBC</code></a> for reasons described in the class-level JavaDoc in the <code>Streaming</code> section.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>streamingModeName</code> - transformation string mode name to be used for streaming operations only</dd></dl> |
| </li> |
| </ul> |
| <a name="setStreamingMode(org.apache.shiro.crypto.OperationMode)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setStreamingMode</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.406">setStreamingMode</a>(<a href="../../../../org/apache/shiro/crypto/OperationMode.html" title="enum in org.apache.shiro.crypto">OperationMode</a> mode)</pre> |
| <div class="block">Sets the transformation string mode to be used for streaming operations only. The default value is |
| <a href="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><code>CBC</code></a> for reasons described in the class-level JavaDoc in the <code>Streaming</code> section.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>mode</code> - the transformation string mode to be used for streaming operations only</dd></dl> |
| </li> |
| </ul> |
| <a name="getStreamingPaddingSchemeName()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getStreamingPaddingSchemeName</h4> |
| <pre>public <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.410">getStreamingPaddingSchemeName</a>()</pre> |
| </li> |
| </ul> |
| <a name="setStreamingPaddingSchemeName(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setStreamingPaddingSchemeName</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.414">setStreamingPaddingSchemeName</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> streamingPaddingSchemeName)</pre> |
| </li> |
| </ul> |
| <a name="setStreamingPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setStreamingPaddingScheme</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.420">setStreamingPaddingScheme</a>(<a href="../../../../org/apache/shiro/crypto/PaddingScheme.html" title="enum in org.apache.shiro.crypto">PaddingScheme</a> scheme)</pre> |
| </li> |
| </ul> |
| <a name="getStreamingBlockSize()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getStreamingBlockSize</h4> |
| <pre>public int <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.424">getStreamingBlockSize</a>()</pre> |
| </li> |
| </ul> |
| <a name="setStreamingBlockSize(int)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setStreamingBlockSize</h4> |
| <pre>public void <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.428">setStreamingBlockSize</a>(int streamingBlockSize)</pre> |
| </li> |
| </ul> |
| <a name="getTransformationString(boolean)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTransformationString</h4> |
| <pre>protected <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.444">getTransformationString</a>(boolean streaming)</pre> |
| <div class="block">Returns the transformation string to use with the <a href="http://java.sun.com/javase/6/docs/api/javax/crypto/Cipher.html?is-external=true#getInstance(java.lang.String)" title="class or interface in javax.crypto"><code>Cipher.getInstance(java.lang.String)</code></a> call. If |
| <code>streaming</code> is <code>true</code>, a block-cipher transformation string compatible with streaming operations will |
| be constructed and cached for re-use later (see the class-level JavaDoc for more on using block ciphers |
| for streaming). If <code>streaming</code> is <code>false</code> a normal block-cipher transformation string will |
| be constructed and cached for later re-use.</div> |
| <dl> |
| <dt><strong>Overrides:</strong></dt> |
| <dd><code><a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#getTransformationString(boolean)">getTransformationString</a></code> in class <code><a href="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto">JcaCipherService</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>streaming</code> - if the transformation string is going to be used for a Cipher performing stream-based encryption or not.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>the transformation string</dd></dl> |
| </li> |
| </ul> |
| <a name="isGenerateInitializationVectors(boolean)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isGenerateInitializationVectors</h4> |
| <pre>protected boolean <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.506">isGenerateInitializationVectors</a>(boolean streaming)</pre> |
| <div class="block">Overrides the parent implementation to ensure initialization vectors are always generated if streaming is |
| enabled (block ciphers <em>must</em> use initialization vectors if they are to be used as a stream cipher). If |
| not being used as a stream cipher, then the value is computed based on whether or not the currently configured |
| <a href="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getModeName()"><code>modeName</code></a> is compatible with initialization vectors as well as the result of the configured |
| <a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#setGenerateInitializationVectors(boolean)"><code>generateInitializationVectors</code></a> value.</div> |
| <dl> |
| <dt><strong>Overrides:</strong></dt> |
| <dd><code><a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#isGenerateInitializationVectors(boolean)">isGenerateInitializationVectors</a></code> in class <code><a href="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto">JcaCipherService</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>streaming</code> - whether or not streaming is being performed</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>true</code> if streaming or a value computed based on if the currently configured mode is compatible |
| with initialization vectors.</dd></dl> |
| </li> |
| </ul> |
| <a name="generateInitializationVector(boolean)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>generateInitializationVector</h4> |
| <pre>protected byte[] <a href="../../../../src-html/org/apache/shiro/crypto/DefaultBlockCipherService.html#line.511">generateInitializationVector</a>(boolean streaming)</pre> |
| <dl> |
| <dt><strong>Overrides:</strong></dt> |
| <dd><code><a href="../../../../org/apache/shiro/crypto/JcaCipherService.html#generateInitializationVector(boolean)">generateInitializationVector</a></code> in class <code><a href="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto">JcaCipherService</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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