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 AesCipherService (Apache Shiro 1.2.4 API)
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 org.apache.shiro.crypto</FONT>
 <BR>
 Class AesCipherService</H2>
 <PRE>
 <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
   <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto">org.apache.shiro.crypto.JcaCipherService</A>
       <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/shiro/crypto/AbstractSymmetricCipherService.html" title="class in org.apache.shiro.crypto">org.apache.shiro.crypto.AbstractSymmetricCipherService</A>
           <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html" title="class in org.apache.shiro.crypto">org.apache.shiro.crypto.DefaultBlockCipherService</A>
               <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.shiro.crypto.AesCipherService</B>
 </PRE>
 <DL>
 <DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/shiro/crypto/CipherService.html" title="interface in org.apache.shiro.crypto">CipherService</A></DD>
 </DL>
 <HR>
 <DL>
 <DT><PRE>public class <A HREF="../../../../src-html/org/apache/shiro/crypto/AesCipherService.html#line.40"><B>AesCipherService</B></A><DT>extends <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html" title="class in org.apache.shiro.crypto">DefaultBlockCipherService</A></DL>
 </PRE>

 <P>
 <code>CipherService</code> using the <code>AES</code> cipher algorithm for all encryption, decryption, and key operations.
  <p/>
  The AES algorithm can support key sizes of <code>128</code>, <code>192</code> and <code>256</code> bits<b>*</b>.  This implementation
  defaults to 128 bits.
  <p/>
  Note that this class retains the parent class's default <A HREF="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><CODE>CBC</CODE></A> mode of operation
  instead of the typical JDK default of <A HREF="../../../../org/apache/shiro/crypto/OperationMode.html#ECB"><CODE>ECB</CODE></A>.  <code>ECB</code> should not be used in
  security-sensitive environments because <code>ECB</code> does not allow for initialization vectors, which are
  considered necessary for strong encryption.  See the <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html" title="class in org.apache.shiro.crypto"><CODE>parent class</CODE></A>'s JavaDoc and the
  <A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto"><CODE>JcaCipherService</CODE></A> JavaDoc for more on why the JDK default should not be used and is not
  used in this implementation.
  <p/>
  <b>*</b> Generating and using AES key sizes greater than 128 require installation of the
  <a href="http://java.sun.com/javase/downloads/index.jsp">Java Cryptography Extension (JCE) Unlimited Strength
  Jurisdiction Policy files</a>.
 <P>

 <P>
 <DL>
 <DT><B>Since:</B></DT>
   <DD>1.0</DD>
 </DL>
 <HR>

 <P>

 <!-- ======== CONSTRUCTOR SUMMARY ======== -->

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 <TD><CODE><B><A HREF="../../../../org/apache/shiro/crypto/AesCipherService.html#AesCipherService()">AesCipherService</A></B>()</CODE>

 <BR>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates a new <A HREF="../../../../org/apache/shiro/crypto/CipherService.html" title="interface in org.apache.shiro.crypto"><CODE>CipherService</CODE></A> instance using the <code>AES</code> cipher algorithm with the following
  important cipher default attributes:


  Attribute
  Value


  <A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html#setKeySize(int)"><CODE>keySize</CODE></A>
  <code>128</code> bits


  <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setBlockSize(int)"><CODE>blockSize</CODE></A>
  <code>128</code> bits (required for <code>AES</code>


  <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setMode(org.apache.shiro.crypto.OperationMode)"><CODE>mode</CODE></A>
  <A HREF="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><CODE>CBC</CODE></A><b>*</b>


  <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"><CODE>paddingScheme</CODE></A>
  <A HREF="../../../../org/apache/shiro/crypto/PaddingScheme.html#PKCS5"><CODE>PKCS5</CODE></A>


  <A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html#setInitializationVectorSize(int)"><CODE>initializationVectorSize</CODE></A>
  <code>128</code> bits


  <A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html#setGenerateInitializationVectors(boolean)"><CODE>generateInitializationVectors</CODE></A>
  <code>true</code><b>**</b>


  <p/>
  <b>*</b> The <A HREF="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><CODE>CBC</CODE></A> operation mode is used instead of the JDK default <code>ECB</code> to
  ensure strong encryption.</TD>
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 </TABLE>
 &nbsp;<A NAME="methods_inherited_from_class_org.apache.shiro.crypto.DefaultBlockCipherService"><!-- --></A>
 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
 <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
 <TH ALIGN="left"><B>Methods inherited from class org.apache.shiro.crypto.<A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html" title="class in org.apache.shiro.crypto">DefaultBlockCipherService</A></B></TH>
 </TR>
 <TR BGCOLOR="white" CLASS="TableRowColor">
 <TD><CODE><A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#generateInitializationVector(boolean)">generateInitializationVector</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getBlockSize()">getBlockSize</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getModeName()">getModeName</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getPaddingSchemeName()">getPaddingSchemeName</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingBlockSize()">getStreamingBlockSize</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingModeName()">getStreamingModeName</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getStreamingPaddingSchemeName()">getStreamingPaddingSchemeName</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#getTransformationString(boolean)">getTransformationString</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#isGenerateInitializationVectors(boolean)">isGenerateInitializationVectors</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setBlockSize(int)">setBlockSize</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setMode(org.apache.shiro.crypto.OperationMode)">setMode</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setModeName(java.lang.String)">setModeName</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)">setPaddingScheme</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingSchemeName(java.lang.String)">setPaddingSchemeName</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingBlockSize(int)">setStreamingBlockSize</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingMode(org.apache.shiro.crypto.OperationMode)">setStreamingMode</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingModeName(java.lang.String)">setStreamingModeName</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingPaddingScheme(org.apache.shiro.crypto.PaddingScheme)">setStreamingPaddingScheme</A>, <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setStreamingPaddingSchemeName(java.lang.String)">setStreamingPaddingSchemeName</A></CODE></TD>
 </TR>
 </TABLE>
 &nbsp;<A NAME="methods_inherited_from_class_org.apache.shiro.crypto.AbstractSymmetricCipherService"><!-- --></A>
 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
 <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
 <TH ALIGN="left"><B>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></B></TH>
 </TR>
 <TR BGCOLOR="white" CLASS="TableRowColor">
 <TD><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></TD>
 </TR>
 </TABLE>
 &nbsp;<A NAME="methods_inherited_from_class_org.apache.shiro.crypto.JcaCipherService"><!-- --></A>
 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
 <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
 <TH ALIGN="left"><B>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></B></TH>
 </TR>
 <TR BGCOLOR="white" CLASS="TableRowColor">
 <TD><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></TD>
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 <A NAME="AesCipherService()"><!-- --></A><H3>
 AesCipherService</H3>
 <PRE>
 public <A HREF="../../../../src-html/org/apache/shiro/crypto/AesCipherService.html#line.86"><B>AesCipherService</B></A>()</PRE>
 <DL>
 <DD>Creates a new <A HREF="../../../../org/apache/shiro/crypto/CipherService.html" title="interface in org.apache.shiro.crypto"><CODE>CipherService</CODE></A> instance using the <code>AES</code> cipher algorithm with the following
  important cipher default attributes:
  <table>
  <tr>
  <th>Attribute</th>
  <th>Value</th>
  </tr>
  <tr>
  <td><A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html#setKeySize(int)"><CODE>keySize</CODE></A></td>
  <td><code>128</code> bits</td>
  </tr>
  <tr>
  <td><A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setBlockSize(int)"><CODE>blockSize</CODE></A></td>
  <td><code>128</code> bits (required for <code>AES</code></td>
  </tr>
  <tr>
  <td><A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setMode(org.apache.shiro.crypto.OperationMode)"><CODE>mode</CODE></A></td>
  <td><A HREF="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><CODE>CBC</CODE></A><b>*</b></td>
  </tr>
  <tr>
  <td><A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html#setPaddingScheme(org.apache.shiro.crypto.PaddingScheme)"><CODE>paddingScheme</CODE></A></td>
  <td><A HREF="../../../../org/apache/shiro/crypto/PaddingScheme.html#PKCS5"><CODE>PKCS5</CODE></A></td>
  </tr>
  <tr>
  <td><A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html#setInitializationVectorSize(int)"><CODE>initializationVectorSize</CODE></A></td>
  <td><code>128</code> bits</td>
  </tr>
  <tr>
  <td><A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html#setGenerateInitializationVectors(boolean)"><CODE>generateInitializationVectors</CODE></A></td>
  <td><code>true</code><b>**</b></td>
  </tr>
  </table>
  <p/>
  <b>*</b> The <A HREF="../../../../org/apache/shiro/crypto/OperationMode.html#CBC"><CODE>CBC</CODE></A> operation mode is used instead of the JDK default <code>ECB</code> to
  ensure strong encryption.  <code>ECB</code> should not be used in security-sensitive environments - see the
  <A HREF="../../../../org/apache/shiro/crypto/DefaultBlockCipherService.html" title="class in org.apache.shiro.crypto"><CODE>DefaultBlockCipherService</CODE></A> class JavaDoc's &quot;Operation Mode&quot; section
  for more.
  <p/>
  <b>**</b>In conjunction with the default <code>CBC</code> operation mode, initialization vectors are generated by
  default to ensure strong encryption.  See the <A HREF="../../../../org/apache/shiro/crypto/JcaCipherService.html" title="class in org.apache.shiro.crypto"><CODE>JcaCipherService</CODE></A> class JavaDoc for more.
 <P>
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