Java Doc for BufferedAsymmetricBlockCipher.java in  » Security » Bouncy-Castle » org » bouncycastle » crypto » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Security » Bouncy Castle » org.bouncycastle.crypto 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.bouncycastle.crypto.BufferedAsymmetricBlockCipher

BufferedAsymmetricBlockCipher
public class BufferedAsymmetricBlockCipher (Code)
a buffer wrapper for an asymmetric block cipher, allowing input to be accumulated in a piecemeal fashion until final processing.


Field Summary
protected  byte[]buf
    
protected  intbufOff
    

Constructor Summary
public  BufferedAsymmetricBlockCipher(AsymmetricBlockCipher cipher)
     base constructor.

Method Summary
public  byte[]doFinal()
     process the contents of the buffer using the underlying cipher.
public  intgetBufferPosition()
     return the amount of data sitting in the buffer.
public  intgetInputBlockSize()
     returns the largest size an input block can be.
public  intgetOutputBlockSize()
     returns the maximum size of the block produced by this cipher.
public  AsymmetricBlockCiphergetUnderlyingCipher()
     return the underlying cipher for the buffer.
public  voidinit(boolean forEncryption, CipherParameters params)
     initialise the buffer and the underlying cipher.
public  voidprocessByte(byte in)
     add another byte for processing.
public  voidprocessBytes(byte[] in, int inOff, int len)
     add len bytes to the buffer for processing.
public  voidreset()
     Reset the buffer and the underlying cipher.

Field Detail
buf
protected byte[] buf(Code)



bufOff
protected int bufOff(Code)




Constructor Detail
BufferedAsymmetricBlockCipher
public BufferedAsymmetricBlockCipher(AsymmetricBlockCipher cipher)(Code)
base constructor.
Parameters:
  cipher - the cipher this buffering object wraps.




Method Detail
doFinal
public byte[] doFinal() throws InvalidCipherTextException(Code)
process the contents of the buffer using the underlying cipher. the result of the encryption/decryption process on thebuffer.
exception:
  InvalidCipherTextException - if we are given a garbage block.



getBufferPosition
public int getBufferPosition()(Code)
return the amount of data sitting in the buffer. the amount of data sitting in the buffer.



getInputBlockSize
public int getInputBlockSize()(Code)
returns the largest size an input block can be. maximum size for an input block.



getOutputBlockSize
public int getOutputBlockSize()(Code)
returns the maximum size of the block produced by this cipher. maximum size of the output block produced by the cipher.



getUnderlyingCipher
public AsymmetricBlockCipher getUnderlyingCipher()(Code)
return the underlying cipher for the buffer. the underlying cipher for the buffer.



init
public void init(boolean forEncryption, CipherParameters params)(Code)
initialise the buffer and the underlying cipher.
Parameters:
  forEncryption - if true the cipher is initialised forencryption, if false for decryption.
Parameters:
  params - the key and other data required by the cipher.



processByte
public void processByte(byte in)(Code)
add another byte for processing.
Parameters:
  in - the input byte.



processBytes
public void processBytes(byte[] in, int inOff, int len)(Code)
add len bytes to the buffer for processing.
Parameters:
  in - the input data
Parameters:
  inOff - offset into the in array where the data starts
Parameters:
  len - the length of the block to be processed.



reset
public void reset()(Code)
Reset the buffer and the underlying cipher.



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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