Java Doc for AsymmetricBlockCipher.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) 


org.bouncycastle.crypto.AsymmetricBlockCipher

All known Subclasses:   org.bouncycastle.crypto.engines.RSAEngine,  org.bouncycastle.crypto.engines.RSABlindedEngine,  org.bouncycastle.crypto.engines.RSABlindingEngine,  org.bouncycastle.crypto.engines.NaccacheSternEngine,  org.bouncycastle.crypto.encodings.ISO9796d1Encoding,  org.bouncycastle.crypto.engines.ElGamalEngine,  org.bouncycastle.crypto.encodings.OAEPEncoding,  org.bouncycastle.crypto.encodings.PKCS1Encoding,
AsymmetricBlockCipher
public interface AsymmetricBlockCipher (Code)
base interface that a public/private key block cipher needs to conform to.




Method Summary
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  voidinit(boolean forEncryption, CipherParameters param)
     initialise the cipher.
public  byte[]processBlock(byte[] in, int inOff, int len)
     process the block of len bytes stored in in from offset inOff.
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.



Method Detail
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.



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



processBlock
public byte[] processBlock(byte[] in, int inOff, int len) throws InvalidCipherTextException(Code)
process the block of len bytes stored in in from offset inOff.
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. the resulting byte array of the encryption/decryption process.
exception:
  InvalidCipherTextException - data decrypts improperly.
exception:
  DataLengthException - the input data is too large for the cipher.



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