pkcs1encoding.html

java非对称加密的源代码

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<A NAME="STRICT_LENGTH_ENABLED_PROPERTY"><!-- --></A><H3>
STRICT_LENGTH_ENABLED_PROPERTY</H3>
<PRE>
public static final java.lang.String <B>STRICT_LENGTH_ENABLED_PROPERTY</B></PRE>
<DL>
<DD>some providers fail to include the leading zero in PKCS1 encoded blocks. If you need to
 work with one of these set the system property org.bouncycastle.pkcs1.strict to false.
 <p>
 The system property is checked during construction of the encoding object, it is set to 
 true by default.
 </p>
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.encodings.PKCS1Encoding.STRICT_LENGTH_ENABLED_PROPERTY">Constant Field Values</A></DL>
</DL>

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<A NAME="PKCS1Encoding(org.bouncycastle.crypto.AsymmetricBlockCipher)"><!-- --></A><H3>
PKCS1Encoding</H3>
<PRE>
public <B>PKCS1Encoding</B>(<A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html" title="interface in org.bouncycastle.crypto">AsymmetricBlockCipher</A>&nbsp;cipher)</PRE>
<DL>
<DD>Basic constructor.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>cipher</CODE> - </DL>
</DL>

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<A NAME="getUnderlyingCipher()"><!-- --></A><H3>
getUnderlyingCipher</H3>
<PRE>
public <A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html" title="interface in org.bouncycastle.crypto">AsymmetricBlockCipher</A> <B>getUnderlyingCipher</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</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><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html#init(boolean, org.bouncycastle.crypto.CipherParameters)">AsymmetricBlockCipher</A></CODE></B></DD>
<DD>initialise the cipher.
<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> - if true the cipher is initialised for 
  encryption, if false for decryption.<DD><CODE>param</CODE> - the key and other data required by the cipher.</DL>
</DD>
</DL>
<HR>

<A NAME="getInputBlockSize()"><!-- --></A><H3>
getInputBlockSize</H3>
<PRE>
public int <B>getInputBlockSize</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html#getInputBlockSize()">AsymmetricBlockCipher</A></CODE></B></DD>
<DD>returns the largest size an input block can be.
<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>
</DL>
<HR>

<A NAME="getOutputBlockSize()"><!-- --></A><H3>
getOutputBlockSize</H3>
<PRE>
public int <B>getOutputBlockSize</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html#getOutputBlockSize()">AsymmetricBlockCipher</A></CODE></B></DD>
<DD>returns the maximum size of the block produced by this cipher.
<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 of the output block produced by the cipher.</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)
                    throws <A HREF="../../../../org/bouncycastle/crypto/InvalidCipherTextException.html" title="class in org.bouncycastle.crypto">InvalidCipherTextException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html#processBlock(byte[], int, int)">AsymmetricBlockCipher</A></CODE></B></DD>
<DD>process the block of len bytes stored in in from offset inOff.
<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 data<DD><CODE>inOff</CODE> - offset into the in array where the data starts<DD><CODE>inLen</CODE> - the length of the block to be processed.
<DT><B>Returns:</B><DD>the resulting byte array of the encryption/decryption process.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/bouncycastle/crypto/InvalidCipherTextException.html" title="class in org.bouncycastle.crypto">InvalidCipherTextException</A></CODE> - data decrypts improperly.</DL>
</DD>
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<b>Bouncy Castle Cryptography Library 1.38</b></EM>
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