| java.lang.Object
 org.bouncycastle.crypto.StreamBlockCipher
| StreamBlockCipher | | public class StreamBlockCipher implements StreamCipher(Code) | | a wrapper for block ciphers with a single byte block size, so that they
can be treated like stream ciphers.
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| Method Summary | |
| public String | getAlgorithmName()
return the name of the algorithm we are wrapping. | | public void | init(boolean forEncryption, CipherParameters params)
initialise the underlying cipher. | | public void | processBytes(byte[] in, int inOff, int len, byte[] out, int outOff)
process a block of bytes from in putting the result into out.
Parameters:
in - the input byte array.
Parameters:
inOff - the offset into the in array where the data to be processed starts.
Parameters:
len - the number of bytes to be processed.
Parameters:
out - the output buffer the processed bytes go into. | | public void | reset()
reset the underlying cipher. | | public byte | returnByte(byte in)
encrypt/decrypt a single byte returning the result.
Parameters:
in - the byte to be processed. |
| StreamBlockCipher | | public StreamBlockCipher(BlockCipher cipher)(Code) | | basic constructor.
Parameters:
cipher - the block cipher to be wrapped.
exception:
IllegalArgumentException - if the cipher has a block size other thanone. |
| getAlgorithmName | | public String getAlgorithmName()(Code) | | return the name of the algorithm we are wrapping.
the name of the algorithm we are wrapping. |
| init | | public void init(boolean forEncryption, CipherParameters params)(Code) | | initialise the underlying cipher.
Parameters:
forEncryption - true if we are setting up for encryption, false otherwise.
Parameters:
params - the necessary parameters for the underlying cipher to be initialised. |
| processBytes | | public void processBytes(byte[] in, int inOff, int len, byte[] out, int outOff) throws DataLengthException(Code) | | process a block of bytes from in putting the result into out.
Parameters:
in - the input byte array.
Parameters:
inOff - the offset into the in array where the data to be processed starts.
Parameters:
len - the number of bytes to be processed.
Parameters:
out - the output buffer the processed bytes go into.
Parameters:
outOff - the offset into the output byte array the processed data stars at.
exception:
DataLengthException - if the output buffer is too small. |
| reset | | public void reset()(Code) | | reset the underlying cipher. This leaves it in the same state
it was at after the last init (if there was one).
|
| returnByte | | public byte returnByte(byte in)(Code) | | encrypt/decrypt a single byte returning the result.
Parameters:
in - the byte to be processed. the result of processing the input byte. |
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