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AsymmetricBlockCipher.javaAPI DocAzureus 3.0.3.41422Tue Jun 08 05:12:58 BST 2004org.bouncycastle.crypto

AsymmetricBlockCipher

public interface AsymmetricBlockCipher
base interface that a public/private key block cipher needs to conform to.

Fields Summary
Constructors Summary
Methods Summary
public intgetInputBlockSize()
returns the largest size an input block can be.

return
maximum size for an input block.

public intgetOutputBlockSize()
returns the maximum size of the block produced by this cipher.

return
maximum size of the output block produced by the cipher.

public voidinit(boolean forEncryption, CipherParameters param)
initialise the cipher.

param
forEncryption if true the cipher is initialised for encryption, if false for decryption.
param
param the key and other data required by the cipher.

public byte[]processBlock(byte[] in, int inOff, int len)
process the block of len bytes stored in in from offset inOff.

param
in the input data
param
inOff offset into the in array where the data starts
param
len the length of the block to be processed.
return
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.