org.bouncycastle.crypto

Interface PacketCipher

All Known Subinterfaces:

AESCBCModePacketCipher, AESCCMModePacketCipher, AESCFBModePacketCipher, AESCTRModePacketCipher, AESGCMModePacketCipher, AESGCMSIVModePacketCipher

All Known Implementing Classes:

AESCBCPacketCipher, AESCCMPacketCipher, AESCFBPacketCipher, AESCTRPacketCipher, AESGCMPacketCipher, AESGCMSIVPacketCipher, AESNativeCBCPacketCipher, AESNativeCCMPacketCipher, AESNativeCFBPacketCipher, AESNativeCTRPacketCipher, AESNativeGCMPacketCipher, AESNativeGCMSIVPacketCipher

public interface PacketCipher

Packet ciphers are reusable instances that perform one complete transformation with known input and output message lengths.

Method Summary

Modifier and Type	Method and Description
int	getOutputSize(boolean encryption, CipherParameters parameters, int len) Returns the expected output size for direction and parameters.
int	processPacket(boolean encryption, CipherParameters parameters, byte[] input, int inOff, int len, byte[] output, int outOff) Process a packet.

Method Detail

getOutputSize

int getOutputSize(boolean encryption,
                  CipherParameters parameters,
                  int len)

Returns the expected output size for direction and parameters.

Parameters:

encryption - encryption if true

parameters - The cipher parameters

len - the input length.

Returns:

the required minimum output length in bytes.

processPacket

int processPacket(boolean encryption,
                  CipherParameters parameters,
                  byte[] input,
                  int inOff,
                  int len,
                  byte[] output,
                  int outOff)
           throws PacketCipherException

Process a packet.

Parameters:

encryption - encryption if true

parameters - The key parameters

input - The input byte array

inOff - Offset within byte array to start reading input.

len - the number of bytes of input to process.

output - The output array

outOff - the offset within the output array to start writing output.

Returns:

Throws:

PacketCipherException - if the transformation encounters an error.