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Bouncy Castle Cryptography 1.45 | ||||||||
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java.lang.Objectorg.bouncycastle.crypto.StreamBlockCipher
public class 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. |
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| 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 StreamCipherforEncryption - true if we are setting up for encryption, false otherwise.params - the necessary parameters for the underlying cipher to be initialised.public java.lang.String getAlgorithmName()
getAlgorithmName in interface StreamCipherpublic byte returnByte(byte in)
returnByte in interface StreamCipherin - the byte to be processed.
public void processBytes(byte[] in,
int inOff,
int len,
byte[] out,
int outOff)
throws DataLengthException
processBytes in interface StreamCipherin - 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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