Bouncy Castle Cryptography Library 1.80 · org.bouncycastle.crypto.BufferedAsymmetricBlockCipher

Modifier and Type	Field and Description
protected byte[]	buf
protected int	bufOff
private final AsymmetricBlockCipher	cipher

Access	Constructor and Description
public	BufferedAsymmetricBlockCipher(AsymmetricBlockCipher the cipher this buffering object wraps. cipher) base constructor.

Method Summary

Modifier and Type	Method and Description
public byte[]	Returns: the result of the encryption/decryption process on the buffer. doFinal() process the contents of the buffer using the underlying cipher.
public int	Returns: the amount of data sitting in the buffer. getBufferPosition() return the amount of data sitting in the buffer.
public int	Returns: maximum size for an input block. getInputBlockSize() returns the largest size an input block can be.
public int	Returns: maximum size of the output block produced by the cipher. getOutputBlockSize() returns the maximum size of the block produced by this cipher.
public AsymmetricBlockCipher	Returns: the underlying cipher for the buffer. getUnderlyingCipher() return the underlying cipher for the buffer.
public void	init(boolean if true the cipher is initialised for encryption, if false for decryption. forEncryption, CipherParameters the key and other data required by the cipher. params) initialise the buffer and the underlying cipher.
public void	processByte(byte the input byte. in) add another byte for processing.
public void	processBytes(byte[] the input data in, int offset into the in array where the data starts inOff, int the length of the block to be processed. len) add len bytes to the buffer for processing.
public void	reset() Reset the buffer and the underlying cipher.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

buf	back to summary
protected byte[] buf

bufOff	back to summary
protected int bufOff

cipher	back to summary
private final AsymmetricBlockCipher cipher

BufferedAsymmetricBlockCipher	back to summary
public BufferedAsymmetricBlockCipher(AsymmetricBlockCipher cipher) base constructor. Parameters cipher:AsymmetricBlockCipher the cipher this buffering object wraps.

Method Detail

doFinal	back to summary
public byte[] doFinal() throws InvalidCipherTextException process the contents of the buffer using the underlying cipher. Returns:byte[] the result of the encryption/decryption process on the buffer. Exceptions InvalidCipherTextException: if we are given a garbage block.

doFinal

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public byte[] doFinal() throws InvalidCipherTextException

process the contents of the buffer using the underlying cipher.

Returns:byte[]

the result of the encryption/decryption process on the buffer.

Exceptions

InvalidCipherTextException:: if we are given a garbage block.

getBufferPosition	back to summary
public int getBufferPosition() return the amount of data sitting in the buffer. Returns:int the amount of data sitting in the buffer.

getBufferPosition

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public int getBufferPosition()

return the amount of data sitting in the buffer.

Returns:int: the amount of data sitting in the buffer.

getInputBlockSize	back to summary
public int getInputBlockSize() returns the largest size an input block can be. Returns:int maximum size for an input block.

getInputBlockSize

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public int getInputBlockSize()

returns the largest size an input block can be.

Returns:int: maximum size for an input block.

getOutputBlockSize	back to summary
public int getOutputBlockSize() returns the maximum size of the block produced by this cipher. Returns:int maximum size of the output block produced by the cipher.

getOutputBlockSize

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public int getOutputBlockSize()

returns the maximum size of the block produced by this cipher.

Returns:int: maximum size of the output block produced by the cipher.

getUnderlyingCipher	back to summary
public AsymmetricBlockCipher getUnderlyingCipher() return the underlying cipher for the buffer. Returns:AsymmetricBlockCipher the underlying cipher for the buffer.

getUnderlyingCipher

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public AsymmetricBlockCipher getUnderlyingCipher()

return the underlying cipher for the buffer.

Returns:AsymmetricBlockCipher: the underlying cipher for the buffer.

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

init

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public void init(boolean forEncryption, CipherParameters params)

initialise the buffer and the underlying cipher.

Parameters

forEncryption:boolean: if true the cipher is initialised for encryption, if false for decryption.
params:CipherParameters: the key and other data required by the cipher.

processByte	back to summary
public void processByte(byte in) add another byte for processing. Parameters in:byte the input byte.

processByte

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public void processByte(byte in)

add another byte for processing.

Parameters

in:byte: the input byte.

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

processBytes

back to summary

public void processBytes(byte[] in, int inOff, int len)

add len bytes to the buffer for processing.

Parameters

in:byte[]: the input data
inOff:int: offset into the in array where the data starts
len:int: the length of the block to be processed.

reset	back to summary
public void reset() Reset the buffer and the underlying cipher.

public Class BufferedAsymmetricBlockCipher

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail