nullengine.html

java非对称加密的源代码

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<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.NullEngine.BLOCK_SIZE">Constant Field Values</A></DL>
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<A NAME="NullEngine()"><!-- --></A><H3>
NullEngine</H3>
<PRE>
public <B>NullEngine</B>()</PRE>
<DL>
<DD>Standard constructor.
<P>
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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)
          throws java.lang.IllegalArgumentException</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#init(boolean, org.bouncycastle.crypto.CipherParameters)">BlockCipher</A></CODE></B></DD>
<DD>Initialise the 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>forEncryption</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>
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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/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>

<A NAME="getBlockSize()"><!-- --></A><H3>
getBlockSize</H3>
<PRE>
public int <B>getBlockSize</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#getBlockSize()">BlockCipher</A></CODE></B></DD>
<DD>Return the block size for this cipher (in bytes).
<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 for this cipher 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><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/BlockCipher.html#processBlock(byte[], int, byte[], int)">BlockCipher</A></CODE></B></DD>
<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="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/BlockCipher.html#reset()">BlockCipher</A></CODE></B></DD>
<DD>Reset the cipher. After resetting the cipher is in the same state
 as it was after the last init (if there was one).
<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>
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