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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.6.0) on Fri Mar 13 12:56:51 EST 2009 --><TITLE>IDEAEngine (Bouncy Castle Library 1.42 API Specification)</TITLE><META NAME="date" CONTENT="2009-03-13"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ if (location.href.indexOf('is-external=true') == -1) { parent.document.title="IDEAEngine (Bouncy Castle Library 1.42 API Specification)"; }}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><HR><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Bouncy Castle Cryptography Library 1.42</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/bouncycastle/crypto/engines/HC256Engine.html" title="class in org.bouncycastle.crypto.engines"><B>PREV CLASS</B></A> <A HREF="../../../../org/bouncycastle/crypto/engines/IESEngine.html" title="class in org.bouncycastle.crypto.engines"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?org/bouncycastle/crypto/engines/IDEAEngine.html" target="_top"><B>FRAMES</B></A> <A HREF="IDEAEngine.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.bouncycastle.crypto.engines</FONT><BR>Class IDEAEngine</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.bouncycastle.crypto.engines.IDEAEngine</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html" title="interface in org.bouncycastle.crypto">BlockCipher</A></DD></DL><HR><DL><DT><PRE>public class <B>IDEAEngine</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html" title="interface in org.bouncycastle.crypto">BlockCipher</A></DL></PRE><P>A class that provides a basic International Data Encryption Algorithm (IDEA) engine. <p> This implementation is based on the "HOWTO: INTERNATIONAL DATA ENCRYPTION ALGORITHM" implementation summary by Fauzan Mirza (F.U.Mirza@sheffield.ac.uk). (baring 1 typo at the end of the mulinv function!). <p> It can be found at ftp://ftp.funet.fi/pub/crypt/cryptography/symmetric/idea/ <p> Note 1: This algorithm is patented in the USA, Japan, and Europe including at least Austria, France, Germany, Italy, Netherlands, Spain, Sweden, Switzerland and the United Kingdom. Non-commercial use is free, however any commercial products are liable for royalties. Please see <a href="http://www.mediacrypt.com">www.mediacrypt.com</a> for further details. This announcement has been included at the request of the patent holders. <p> Note 2: Due to the requests concerning the above, this algorithm is now only included in the extended Bouncy Castle provider and JCE signed jars. It is not included in the default distributions.<P><P><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/IDEAEngine.html#BLOCK_SIZE">BLOCK_SIZE</A></B></CODE><BR> </TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/IDEAEngine.html#IDEAEngine()">IDEAEngine</A></B>()</CODE><BR> standard constructor.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/IDEAEngine.html#getAlgorithmName()">getAlgorithmName</A></B>()</CODE><BR> Return the name of the algorithm the cipher implements.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/IDEAEngine.html#getBlockSize()">getBlockSize</A></B>()</CODE><BR> Return the block size for this cipher (in bytes).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/IDEAEngine.html#init(boolean, org.bouncycastle.crypto.CipherParameters)">init</A></B>(boolean forEncryption, <A HREF="../../../../org/bouncycastle/crypto/CipherParameters.html" title="interface in org.bouncycastle.crypto">CipherParameters</A> params)</CODE><BR> initialise an IDEA cipher.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/IDEAEngine.html#processBlock(byte[], int, byte[], int)">processBlock</A></B>(byte[] in, int inOff, byte[] out, int outOff)</CODE><BR> Process one block of input from the array in and write it to the out array.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/IDEAEngine.html#reset()">reset</A></B>()</CODE><BR> Reset the cipher.</TD></TR></TABLE>⌨️ 快捷键说明
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