StreamCipher
VMPCKSA3Engine
public class VMPCEngine extends java.lang.Object implements StreamCipher
Modifier and Type | Field | Description |
---|---|---|
protected byte |
n |
|
protected byte[] |
P |
|
protected byte |
s |
|
protected byte[] |
workingIV |
|
protected byte[] |
workingKey |
Constructor | Description |
---|---|
VMPCEngine() |
Modifier and Type | Method | Description |
---|---|---|
java.lang.String |
getAlgorithmName() |
Return the name of the algorithm the cipher implements.
|
void |
init(boolean forEncryption,
CipherParameters params) |
initialise a VMPC cipher.
|
protected void |
initKey(byte[] keyBytes,
byte[] ivBytes) |
|
int |
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 cipher.
|
byte |
returnByte(byte in) |
encrypt/decrypt a single byte returning the result.
|
protected byte n
protected byte[] P
protected byte s
protected byte[] workingIV
protected byte[] workingKey
public java.lang.String getAlgorithmName()
StreamCipher
getAlgorithmName
in interface StreamCipher
public void init(boolean forEncryption, CipherParameters params)
init
in interface StreamCipher
forEncryption
- whether or not we are for encryption.params
- the parameters required to set up the cipher.java.lang.IllegalArgumentException
- if the params argument is inappropriate.protected void initKey(byte[] keyBytes, byte[] ivBytes)
public int processBytes(byte[] in, int inOff, int len, byte[] out, int outOff)
StreamCipher
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 starts at.public void reset()
StreamCipher
reset
in interface StreamCipher
public byte returnByte(byte in)
StreamCipher
returnByte
in interface StreamCipher
in
- the byte to be processed.