cast5engine.html

java非对称加密的源代码

<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#encryptBlock(byte[], int, byte[], int)">encryptBlock</A></B>(byte[]&nbsp;src,
             int&nbsp;srcIndex,
             byte[]&nbsp;dst,
             int&nbsp;dstIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Encrypt the given input starting at the given offset and place
 the result in the provided buffer starting at the given offset.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#F1(int, int, int)">F1</A></B>(int&nbsp;D,
   int&nbsp;Kmi,
   int&nbsp;Kri)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The first of the three processing functions for the
 encryption and decryption.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#F2(int, int, int)">F2</A></B>(int&nbsp;D,
   int&nbsp;Kmi,
   int&nbsp;Kri)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The second of the three processing functions for the
 encryption and decryption.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#F3(int, int, int)">F3</A></B>(int&nbsp;D,
   int&nbsp;Kmi,
   int&nbsp;Kri)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The third of the three processing functions for the
 encryption and decryption.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#getAlgorithmName()">getAlgorithmName</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#getBlockSize()">getBlockSize</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#init(boolean, org.bouncycastle.crypto.CipherParameters)">init</A></B>(boolean&nbsp;encrypting,
     <A HREF="../../../../org/bouncycastle/crypto/CipherParameters.html" title="interface in org.bouncycastle.crypto">CipherParameters</A>&nbsp;params)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;initialise a CAST cipher.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#IntsTo32bits(int[], int)">IntsTo32bits</A></B>(int[]&nbsp;b,
             int&nbsp;i)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#processBlock(byte[], int, byte[], int)">processBlock</A></B>(byte[]&nbsp;in,
             int&nbsp;inOff,
             byte[]&nbsp;out,
             int&nbsp;outOff)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#reset()">reset</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reset the cipher.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/engines/CAST5Engine.html#setKey(byte[])">setKey</A></B>(byte[]&nbsp;key)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ============ FIELD DETAIL =========== -->

<A NAME="field_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>Field Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="M32"><!-- --></A><H3>
M32</H3>
<PRE>
protected static final int <B>M32</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.engines.CAST5Engine.M32">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="S1"><!-- --></A><H3>
S1</H3>
<PRE>
protected static final int[] <B>S1</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="S2"><!-- --></A><H3>
S2</H3>
<PRE>
protected static final int[] <B>S2</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="S3"><!-- --></A><H3>
S3</H3>
<PRE>
protected static final int[] <B>S3</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="S4"><!-- --></A><H3>
S4</H3>
<PRE>
protected static final int[] <B>S4</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="S5"><!-- --></A><H3>
S5</H3>
<PRE>
protected static final int[] <B>S5</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="S6"><!-- --></A><H3>
S6</H3>
<PRE>
protected static final int[] <B>S6</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="S7"><!-- --></A><H3>
S7</H3>
<PRE>
protected static final int[] <B>S7</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="S8"><!-- --></A><H3>
S8</H3>
<PRE>
protected static final int[] <B>S8</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="MAX_ROUNDS"><!-- --></A><H3>
MAX_ROUNDS</H3>
<PRE>
protected static final int <B>MAX_ROUNDS</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.engines.CAST5Engine.MAX_ROUNDS">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="RED_ROUNDS"><!-- --></A><H3>
RED_ROUNDS</H3>
<PRE>
protected static final int <B>RED_ROUNDS</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.engines.CAST5Engine.RED_ROUNDS">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="BLOCK_SIZE"><!-- --></A><H3>
BLOCK_SIZE</H3>
<PRE>
protected static final int <B>BLOCK_SIZE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.engines.CAST5Engine.BLOCK_SIZE">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="_Kr"><!-- --></A><H3>
_Kr</H3>
<PRE>
protected int[] <B>_Kr</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="_Km"><!-- --></A><H3>
_Km</H3>
<PRE>
protected int[] <B>_Km</B></PRE>
<DL>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_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>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="CAST5Engine()"><!-- --></A><H3>
CAST5Engine</H3>
<PRE>
public <B>CAST5Engine</B>()</PRE>
<DL>
</DL>

<!-- ============ 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="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)</PRE>
<DL>
<DD>initialise a CAST cipher.
<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> - whether or not we are for encryption.<DD><CODE>params</CODE> - the parameters required to set up 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><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#getAlgorithmName()">BlockCipher</A></CODE></B></DD>
<DD>Return the name of the algorithm the cipher implements.
<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 algorithm the cipher implements.</DL>
</DD>
</DL>
<HR>