<!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Method Detail</B></FONT></TH></TR></TABLE><A NAME="getUnderlyingCipher()"><!-- --></A><H3>getUnderlyingCipher</H3><PRE>public <A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html" title="interface in org.bouncycastle.crypto">BlockCipher</A> <B>getUnderlyingCipher</B>()</PRE><DL><DD>return the underlying block cipher that we are wrapping.<P><DD><DL></DL></DD><DD><DL><DT><B>Returns:</B><DD>the underlying block cipher that we are wrapping.</DL></DD></DL><HR><A NAME="init(boolean, org.bouncycastle.crypto.CipherParameters)"><!-- --></A><H3>init</H3><PRE>public void <B>init</B>(boolean&nbsp;encrypting,                 <A HREF="../../../../org/bouncycastle/crypto/CipherParameters.html" title="interface in org.bouncycastle.crypto">CipherParameters</A>&nbsp;params)          throws java.lang.IllegalArgumentException</PRE><DL><DD>Initialise the cipher and, possibly, the initialisation vector (IV). If an IV isn't passed as part of the parameter, the IV will be all zeros. An IV which is too short is handled in FIPS compliant fashion.<P><DD><DL><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#init(boolean, org.bouncycastle.crypto.CipherParameters)">init</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html" title="interface in org.bouncycastle.crypto">BlockCipher</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>encrypting</CODE> - if true the cipher is initialised for  encryption, if false for decryption.<DD><CODE>params</CODE> - the key and other data required by the cipher.<DT><B>Throws:</B><DD><CODE>java.lang.IllegalArgumentException</CODE> - if the params argument is inappropriate.</DL></DD></DL><HR><A NAME="getAlgorithmName()"><!-- --></A><H3>getAlgorithmName</H3><PRE>public java.lang.String <B>getAlgorithmName</B>()</PRE><DL><DD>return the algorithm name and mode.<P><DD><DL><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#getAlgorithmName()">getAlgorithmName</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html" title="interface in org.bouncycastle.crypto">BlockCipher</A></CODE></DL></DD><DD><DL><DT><B>Returns:</B><DD>the name of the underlying algorithm followed by "/CFB" and the block size in bits.</DL></DD></DL><HR><A NAME="getBlockSize()"><!-- --></A><H3>getBlockSize</H3><PRE>public int <B>getBlockSize</B>()</PRE><DL><DD>return the block size we are operating at.<P><DD><DL><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#getBlockSize()">getBlockSize</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html" title="interface in org.bouncycastle.crypto">BlockCipher</A></CODE></DL></DD><DD><DL><DT><B>Returns:</B><DD>the block size we are operating at (in bytes).</DL></DD></DL><HR><A NAME="processBlock(byte[], int, byte[], int)"><!-- --></A><H3>processBlock</H3><PRE>public int <B>processBlock</B>(byte[]&nbsp;in,                        int&nbsp;inOff,                        byte[]&nbsp;out,                        int&nbsp;outOff)                 throws <A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A>,                        java.lang.IllegalStateException</PRE><DL><DD>Process one block of input from the array in and write it to the out array.<P><DD><DL><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#processBlock(byte[], int, byte[], int)">processBlock</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html" title="interface in org.bouncycastle.crypto">BlockCipher</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>in</CODE> - the array containing the input data.<DD><CODE>inOff</CODE> - offset into the in array the data starts at.<DD><CODE>out</CODE> - the array the output data will be copied into.<DD><CODE>outOff</CODE> - the offset into the out array the output will start at.<DT><B>Returns:</B><DD>the number of bytes processed and produced.<DT><B>Throws:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A></CODE> - if there isn't enough data in in, or space in out.<DD><CODE>java.lang.IllegalStateException</CODE> - if the cipher isn't initialised.</DL></DD></DL><HR><A NAME="encryptBlock(byte[], int, byte[], int)"><!-- --></A><H3>encryptBlock</H3><PRE>public int <B>encryptBlock</B>(byte[]&nbsp;in,                        int&nbsp;inOff,                        byte[]&nbsp;out,                        int&nbsp;outOff)                 throws <A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A>,                        java.lang.IllegalStateException</PRE><DL><DD>Do the appropriate processing for CFB mode encryption.<P><DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>in</CODE> - the array containing the data to be encrypted.<DD><CODE>inOff</CODE> - offset into the in array the data starts at.<DD><CODE>out</CODE> - the array the encrypted data will be copied into.<DD><CODE>outOff</CODE> - the offset into the out array the output will start at.<DT><B>Returns:</B><DD>the number of bytes processed and produced.<DT><B>Throws:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A></CODE> - if there isn't enough data in in, or space in out.<DD><CODE>java.lang.IllegalStateException</CODE> - if the cipher isn't initialised.</DL></DD></DL><HR><A NAME="decryptBlock(byte[], int, byte[], int)"><!-- --></A><H3>decryptBlock</H3><PRE>public int <B>decryptBlock</B>(byte[]&nbsp;in,                        int&nbsp;inOff,                        byte[]&nbsp;out,                        int&nbsp;outOff)                 throws <A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A>,                        java.lang.IllegalStateException</PRE><DL><DD>Do the appropriate processing for CFB mode decryption.<P><DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>in</CODE> - the array containing the data to be decrypted.<DD><CODE>inOff</CODE> - offset into the in array the data starts at.<DD><CODE>out</CODE> - the array the encrypted data will be copied into.<DD><CODE>outOff</CODE> - the offset into the out array the output will start at.<DT><B>Returns:</B><DD>the number of bytes processed and produced.<DT><B>Throws:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A></CODE> - if there isn't enough data in in, or space in out.<DD><CODE>java.lang.IllegalStateException</CODE> - if the cipher isn't initialised.</DL></DD></DL><HR><A NAME="reset()"><!-- --></A><H3>reset</H3><PRE>public void <B>reset</B>()</PRE><DL><DD>reset the chaining vector back to the IV and reset the underlying cipher.<P><DD><DL><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#reset()">reset</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html" title="interface in org.bouncycastle.crypto">BlockCipher</A></CODE></DL></DD><DD><DL></DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ======= START OF BOTTOM NAVBAR ====== --><A NAME="navbar_bottom"><!-- --></A><A HREF="#skip-navbar_bottom" 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_bottom_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>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A>&nbsp;</TD>  </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Bouncy Castle Cryptography Library 1.34</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">&nbsp;<A HREF="../../../../org/bouncycastle/crypto/modes/CCMBlockCipher.html" title="class in org.bouncycastle.crypto.modes"><B>PREV CLASS</B></A>&nbsp;&nbsp;<A HREF="../../../../org/bouncycastle/crypto/modes/CTSBlockCipher.html" title="class in org.bouncycastle.crypto.modes"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">  <A HREF="../../../../index.html?org/bouncycastle/crypto/modes/CFBBlockCipher.html" target="_top"><B>FRAMES</B></A>  &nbsp;&nbsp;<A HREF="CFBBlockCipher.html" target="_top"><B>NO FRAMES</B></A>  &nbsp;&nbsp;<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:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL:&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_detail">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_bottom"></A><!-- ======== END OF BOTTOM NAVBAR ======= --><HR></BODY></HTML>