rc4engine.html

java非对称加密的源代码

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<A NAME="RC4Engine()"><!-- --></A><H3>
RC4Engine</H3>
<PRE>
public <B>RC4Engine</B>()</PRE>
<DL>
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<A NAME="init(boolean, org.bouncycastle.crypto.CipherParameters)"><!-- --></A><H3>
init</H3>
<PRE>
public void <B>init</B>(boolean&nbsp;forEncryption,
                 <A HREF="../../../../org/bouncycastle/crypto/CipherParameters.html" title="interface in org.bouncycastle.crypto">CipherParameters</A>&nbsp;params)</PRE>
<DL>
<DD>initialise a RC4 cipher.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html#init(boolean, org.bouncycastle.crypto.CipherParameters)">init</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html" title="interface in org.bouncycastle.crypto">StreamCipher</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>forEncryption</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>
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<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/StreamCipher.html#getAlgorithmName()">StreamCipher</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/StreamCipher.html#getAlgorithmName()">getAlgorithmName</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html" title="interface in org.bouncycastle.crypto">StreamCipher</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the name of the algorithm the cipher implements.</DL>
</DD>
</DL>
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<A NAME="returnByte(byte)"><!-- --></A><H3>
returnByte</H3>
<PRE>
public byte <B>returnByte</B>(byte&nbsp;in)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html#returnByte(byte)">StreamCipher</A></CODE></B></DD>
<DD>encrypt/decrypt a single byte returning the result.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html#returnByte(byte)">returnByte</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html" title="interface in org.bouncycastle.crypto">StreamCipher</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>in</CODE> - the byte to be processed.
<DT><B>Returns:</B><DD>the result of processing the input byte.</DL>
</DD>
</DL>
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<A NAME="processBytes(byte[], int, int, byte[], int)"><!-- --></A><H3>
processBytes</H3>
<PRE>
public void <B>processBytes</B>(byte[]&nbsp;in,
                         int&nbsp;inOff,
                         int&nbsp;len,
                         byte[]&nbsp;out,
                         int&nbsp;outOff)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html#processBytes(byte[], int, int, byte[], int)">StreamCipher</A></CODE></B></DD>
<DD>process a block of bytes from in putting the result into out.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html#processBytes(byte[], int, int, byte[], int)">processBytes</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html" title="interface in org.bouncycastle.crypto">StreamCipher</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>in</CODE> - the input byte array.<DD><CODE>inOff</CODE> - the offset into the in array where the data to be processed starts.<DD><CODE>len</CODE> - the number of bytes to be processed.<DD><CODE>out</CODE> - the output buffer the processed bytes go into.<DD><CODE>outOff</CODE> - the offset into the output byte array the processed data starts at.</DL>
</DD>
</DL>
<HR>

<A NAME="reset()"><!-- --></A><H3>
reset</H3>
<PRE>
public void <B>reset</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html#reset()">StreamCipher</A></CODE></B></DD>
<DD>reset the cipher. This leaves it in the same state
 it was at after the last init (if there was one).
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html#reset()">reset</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/StreamCipher.html" title="interface in org.bouncycastle.crypto">StreamCipher</A></CODE></DL>
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<DD><DL>
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