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public interface Mac
A message authentication code.
Method Summary | |
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int |
doFinal(byte[] out,
int outOff)
Compute the final stage of the MAC writing the output to the out parameter. |
java.lang.String |
getAlgorithmName()
Return the name of the algorithm the MAC implements. |
int |
getMacSize()
Return the block size for this MAC (in bytes). |
void |
init(byte[] key)
Initialise the MAC. |
void |
reset()
Reset the MAC. |
void |
update(byte in)
add a single byte to the mac for processing. |
void |
update(byte[] in,
int inOff,
int len)
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Method Detail |
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void init(byte[] key)
key
- the key required by the MAC.java.lang.String getAlgorithmName()
int getMacSize()
void update(byte in)
in
- the byte to be processed.void update(byte[] in, int inOff, int len)
in
- the array containing the input.inOff
- the index in the array the data begins at.len
- the length of the input starting at inOff.int doFinal(byte[] out, int outOff)
doFinal leaves the MAC in the same state it was after the last init.
out
- the array the MAC is to be output to.outOff
- the offset into the out buffer the output is to start at.void reset()
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