Bouncy Castle Cryptography 1.11 API Specification: Class StreamBlockCipher
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Bouncy Castle Cryptography 1.11 | ||||||||
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java.lang.Object | +--org.bouncycastle.crypto.StreamBlockCipher
a wrapper for block ciphers with a single byte block size, so that they can be treated like stream ciphers.
Constructor Summary | |
StreamBlockCipher(BlockCipher cipher)
basic constructor. |
Method Summary | |
java.lang.String |
getAlgorithmName()
return the name of the algorithm we are wrapping. |
void |
init(boolean forEncryption,
CipherParameters params)
initialise the underlying cipher. |
void |
processBytes(byte[] in,
int inOff,
int len,
byte[] out,
int outOff)
process a block of bytes from in putting the result into out. |
void |
reset()
reset the underlying cipher. |
byte |
returnByte(byte in)
encrypt/decrypt a single byte returning the result. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public StreamBlockCipher(BlockCipher cipher)
cipher
- the block cipher to be wrapped.java.lang.IllegalArgumentException
- if the cipher has a block size other than
one.Method Detail |
public void init(boolean forEncryption, CipherParameters params)
init
in interface StreamCipher
forEncryption
- true if we are setting up for encryption, false otherwise.param
- the necessary parameters for the underlying cipher to be initialised.public java.lang.String getAlgorithmName()
getAlgorithmName
in interface StreamCipher
public byte returnByte(byte in)
returnByte
in interface StreamCipher
in
- the byte to be processed.public void processBytes(byte[] in, int inOff, int len, byte[] out, int outOff) throws DataLengthException
processBytes
in interface StreamCipher
in
- the input byte array.inOff
- the offset into the in array where the data to be processed starts.len
- the number of bytes to be processed.out
- the output buffer the processed bytes go into.outOff
- the offset into the output byte array the processed data stars at.DataLengthException
- if the output buffer is too small.public void reset()
reset
in interface StreamCipher
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