/**
* Create a buffered block cipher without padding.
*
* @param cipher the underlying block cipher this buffering object wraps.
* @param padded true if the buffer should add, or remove, pad bytes,
* false otherwise.
*/
public BufferedBlockCipher(
BlockCipher cipher)
{
this.cipher = cipher;
buf = new byte[cipher.getBlockSize()];
bufOff = 0;
//
// check if we can handle partial blocks on doFinal.
//
String name = cipher.getAlgorithmName();
int idx = name.IndexOf('/') + 1;
pgpCFB = (idx > 0 && name.Substring(idx).StartsWith("PGP"));
if (pgpCFB)
{
partialBlockOkay = true;
}
else
{
partialBlockOkay = (idx > 0 && (name.Substring(idx).StartsWith("CFB") ||
name.Substring(idx).StartsWith("OFB")));
}
}
/**
* return the algorithm name and mode.
*
* @return the name of the underlying algorithm followed by "/CBC".
*/
public String getAlgorithmName()
{
return(cipher.getAlgorithmName() + "/CBC");
}
/**
* return the algorithm name and mode.
*
* @return the name of the underlying algorithm followed by "/CFB"
* and the block size in bits.
*/
public String getAlgorithmName()
{
return(cipher.getAlgorithmName() + "/CFB" + (blockSize * 8));
}
