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Bouncy Castle Cryptography 1.11 API Specification: Class OAEPEncoding
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Bouncy Castle Cryptography 1.11
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org.bouncycastle.crypto.encodings
Class OAEPEncoding

java.lang.Object
  |
  +--org.bouncycastle.crypto.encodings.OAEPEncoding
All Implemented Interfaces:
AsymmetricBlockCipher
public class OAEPEncoding
extends java.lang.Object
implements AsymmetricBlockCipher

Optimal Asymmetric Encryption Padding (OAEP) - see PKCS 1 V 2.

Constructor Summary
OAEPEncoding(AsymmetricBlockCipher cipher)
           
 
Method Summary
 byte[] decodeBlock(byte[] in, int inOff, int inLen)
           
 byte[] encodeBlock(byte[] in, int inOff, int inLen)
           
 int getInputBlockSize()
          returns the largest size an input block can be.
 int getOutputBlockSize()
          returns the maximum size of the block produced by this cipher.
 AsymmetricBlockCipher getUnderlyingCipher()
           
 void init(boolean forEncryption, CipherParameters param)
          initialise the cipher.
 byte[] processBlock(byte[] in, int inOff, int inLen)
          process the block of len bytes stored in in from offset inOff.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

OAEPEncoding

public OAEPEncoding(AsymmetricBlockCipher cipher)
Method Detail

getUnderlyingCipher

public AsymmetricBlockCipher getUnderlyingCipher()

init

public void init(boolean forEncryption,
                 CipherParameters param)
Description copied from interface: AsymmetricBlockCipher
initialise the cipher.
Specified by:
init in interface AsymmetricBlockCipher
Following copied from interface: org.bouncycastle.crypto.AsymmetricBlockCipher
Parameters:
forEncryption - if true the cipher is initialised for encryption, if false for decryption.
param - the key and other data required by the cipher.

getInputBlockSize

public int getInputBlockSize()
Description copied from interface: AsymmetricBlockCipher
returns the largest size an input block can be.
Specified by:
getInputBlockSize in interface AsymmetricBlockCipher
Following copied from interface: org.bouncycastle.crypto.AsymmetricBlockCipher
Returns:
maximum size for an input block.

getOutputBlockSize

public int getOutputBlockSize()
Description copied from interface: AsymmetricBlockCipher
returns the maximum size of the block produced by this cipher.
Specified by:
getOutputBlockSize in interface AsymmetricBlockCipher
Following copied from interface: org.bouncycastle.crypto.AsymmetricBlockCipher
Returns:
maximum size of the output block produced by the cipher.

processBlock

public byte[] processBlock(byte[] in,
                           int inOff,
                           int inLen)
                    throws InvalidCipherTextException
Description copied from interface: AsymmetricBlockCipher
process the block of len bytes stored in in from offset inOff.
Specified by:
processBlock in interface AsymmetricBlockCipher
Following copied from interface: org.bouncycastle.crypto.AsymmetricBlockCipher
Parameters:
in - the input data
inOff - offset into the in array where the data starts
len - the length of the block to be processed.
Returns:
the resulting byte array of the encryption/decryption process.
Throws:
InvalidCipherTextException - data decrypts improperly.
DataLengthException - the input data is too large for the cipher.

encodeBlock

public byte[] encodeBlock(byte[] in,
                          int inOff,
                          int inLen)
                   throws InvalidCipherTextException

decodeBlock

public byte[] decodeBlock(byte[] in,
                          int inOff,
                          int inLen)
                   throws InvalidCipherTextException
Throws:
InvalidCipherTextException - if the decryypted block turns out to be badly formatted.
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