org.bouncycastle.crypto.paddings
Class TBCPadding
java.lang.Object
org.bouncycastle.crypto.paddings.TBCPadding
- BlockCipherPadding
public class TBCPadding
extends java.lang.Object
A padder that adds Trailing-Bit-Compliment padding to a block.
This padding pads the block out with the compliment of the last bit
of the plain text.
int | addPadding(byte[] in, int inOff) - add the pad bytes to the passed in block, returning the
number of bytes added.
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String | getPaddingName() - Return the name of the algorithm the padder implements.
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void | init(SecureRandom random) - Initialise the padder.
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int | padCount(byte[] in) - return the number of pad bytes present in the block.
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addPadding
public int addPadding(byte[] in,
int inOff)
add the pad bytes to the passed in block, returning the
number of bytes added.
Note: this assumes that the last block of plain text is always
passed to it inside in. i.e. if inOff is zero, indicating the
entire block is to be overwritten with padding the value of in
should be the same as the last block of plain text.
- addPadding in interface BlockCipherPadding
getPaddingName
public String getPaddingName()
Return the name of the algorithm the padder implements.
- getPaddingName in interface BlockCipherPadding
- the name of the algorithm the padder implements.
init
public void init(SecureRandom random)
throws IllegalArgumentException
Initialise the padder.
- init in interface BlockCipherPadding
random
- - a SecureRandom if available.