Bouncy Castle Cryptography Library 1.80 · org.bouncycastle.tls.crypto.impl.TlsAEADCipherImpl

Method Summary

Modifier and Type	Method and Description
public int	Returns: the amount of data written to output. doFinal(byte[] any additional data to be included in the MAC calculation. additionalData, byte[] array holding input data to the cipher. input, int offset into input array data starts at. inputOffset, int length of the input data in the array. inputLength, byte[] array to hold the cipher output. output, int offset into output array to start saving output. outputOffset) Perform the cipher encryption/decryption returning the output in output.
public int	Returns: the maximum size of the output. getOutputSize(int the length (in bytes) of the proposed input. inputLength) Return the maximum size of the output for input of inputLength bytes.
public void	init(byte[] the nonce. nonce, int MAC size in bytes. macSize) Initialise the parameters for the AEAD operator.
public void	setKey(byte[] array holding the AEAD cipher key. key, int offset into the array the key starts at. keyOff, int length of the key in the array. keyLen) Set the key to be used by the AEAD cipher implementation supporting this service.

doFinal	back to summary
public int doFinal(byte[] additionalData, byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset) throws IOException Perform the cipher encryption/decryption returning the output in output. Note we have to use doFinal() here as it is the only way to guarantee output from the underlying cipher. Parameters additionalData:byte[] any additional data to be included in the MAC calculation. input:byte[] array holding input data to the cipher. inputOffset:int offset into input array data starts at. inputLength:int length of the input data in the array. output:byte[] array to hold the cipher output. outputOffset:int offset into output array to start saving output. Returns:int the amount of data written to output. Exceptions IOException: in case of failure.

doFinal

public int doFinal(byte[] additionalData, byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset) throws IOException

Perform the cipher encryption/decryption returning the output in output.

Note

we have to use doFinal() here as it is the only way to guarantee output from the underlying cipher.

Parameters

additionalData:byte[]: any additional data to be included in the MAC calculation.
input:byte[]: array holding input data to the cipher.
inputOffset:int: offset into input array data starts at.
inputLength:int: length of the input data in the array.
output:byte[]: array to hold the cipher output.
outputOffset:int: offset into output array to start saving output.

Returns:int

the amount of data written to output.

Exceptions

getOutputSize	back to summary
public int getOutputSize(int inputLength) Return the maximum size of the output for input of inputLength bytes. Parameters inputLength:int the length (in bytes) of the proposed input. Returns:int the maximum size of the output.

getOutputSize

public int getOutputSize(int inputLength)

Return the maximum size of the output for input of inputLength bytes.

Parameters

Returns:int

the maximum size of the output.

init	back to summary
public void init(byte[] nonce, int macSize) throws IOException Initialise the parameters for the AEAD operator. Parameters nonce:byte[] the nonce. macSize:int MAC size in bytes. Exceptions IOException: if the parameters are inappropriate.

init

public void init(byte[] nonce, int macSize) throws IOException

Initialise the parameters for the AEAD operator.

Parameters

Exceptions

setKey	back to summary
public void setKey(byte[] key, int keyOff, int keyLen) throws IOException Set the key to be used by the AEAD cipher implementation supporting this service. Parameters key:byte[] array holding the AEAD cipher key. keyOff:int offset into the array the key starts at. keyLen:int length of the key in the array.

setKey

public void setKey(byte[] key, int keyOff, int keyLen) throws IOException

Set the key to be used by the AEAD cipher implementation supporting this service.

Parameters