rsablindingengine.html

java非对称加密的源代码

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<A NAME="RSABlindingEngine()"><!-- --></A><H3>
RSABlindingEngine</H3>
<PRE>
public <B>RSABlindingEngine</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;param)</PRE>
<DL>
<DD>Initialise the blinding engine.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html#init(boolean, org.bouncycastle.crypto.CipherParameters)">init</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html" title="interface in org.bouncycastle.crypto">AsymmetricBlockCipher</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>forEncryption</CODE> - true if we are encrypting (blinding), false otherwise.<DD><CODE>param</CODE> - the necessary RSA key parameters.</DL>
</DD>
</DL>
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<A NAME="getInputBlockSize()"><!-- --></A><H3>
getInputBlockSize</H3>
<PRE>
public int <B>getInputBlockSize</B>()</PRE>
<DL>
<DD>Return the maximum size for an input block to this engine.
 For RSA this is always one byte less than the key size on
 encryption, and the same length as the key size on decryption.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html#getInputBlockSize()">getInputBlockSize</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html" title="interface in org.bouncycastle.crypto">AsymmetricBlockCipher</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>maximum size for an input block.</DL>
</DD>
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<A NAME="getOutputBlockSize()"><!-- --></A><H3>
getOutputBlockSize</H3>
<PRE>
public int <B>getOutputBlockSize</B>()</PRE>
<DL>
<DD>Return the maximum size for an output block to this engine.
 For RSA this is always one byte less than the key size on
 decryption, and the same length as the key size on encryption.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html#getOutputBlockSize()">getOutputBlockSize</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html" title="interface in org.bouncycastle.crypto">AsymmetricBlockCipher</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>maximum size for an output block.</DL>
</DD>
</DL>
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<A NAME="processBlock(byte[], int, int)"><!-- --></A><H3>
processBlock</H3>
<PRE>
public byte[] <B>processBlock</B>(byte[]&nbsp;in,
                           int&nbsp;inOff,
                           int&nbsp;inLen)</PRE>
<DL>
<DD>Process a single block using the RSA blinding algorithm.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html#processBlock(byte[], int, int)">processBlock</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html" title="interface in org.bouncycastle.crypto">AsymmetricBlockCipher</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>in</CODE> - the input array.<DD><CODE>inOff</CODE> - the offset into the input buffer where the data starts.<DD><CODE>inLen</CODE> - the length of the data to be processed.
<DT><B>Returns:</B><DD>the result of the RSA process.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A></CODE> - the input block is too large.</DL>
</DD>
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