Constructor and Description |
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KMAC(int bitLength,
byte[] S)
Base constructor.
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Modifier and Type | Method and Description |
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int |
doFinal(byte[] out,
int outOff)
Compute the final stage of the MAC writing the output to the out
parameter.
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int |
doFinal(byte[] out,
int outOff,
int outLen)
Output the results of the final calculation for this digest to outLen number of bytes.
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int |
doOutput(byte[] out,
int outOff,
int outLen)
Start outputting the results of the final calculation for this digest.
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java.lang.String |
getAlgorithmName()
Return the name of the algorithm the MAC implements.
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int |
getByteLength()
Return the size in bytes of the internal buffer the digest applies it's compression
function to.
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int |
getDigestSize()
return the size, in bytes, of the digest produced by this message digest.
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int |
getMacSize()
Return the block size for this MAC (in bytes).
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void |
init(CipherParameters params)
Initialise the MAC.
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void |
reset()
Reset the MAC.
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void |
update(byte in)
add a single byte to the mac for processing.
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void |
update(byte[] in,
int inOff,
int len)
update the message digest with a block of bytes.
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public KMAC(int bitLength, byte[] S)
bitLength
- bit length of the underlying SHAKE function, 128 or 256.S
- the customization string - available for local use.public void init(CipherParameters params) throws java.lang.IllegalArgumentException
Mac
public java.lang.String getAlgorithmName()
Mac
getAlgorithmName
in interface Digest
getAlgorithmName
in interface Mac
public int getByteLength()
ExtendedDigest
getByteLength
in interface ExtendedDigest
public int getMacSize()
Mac
getMacSize
in interface Mac
public int getDigestSize()
Digest
getDigestSize
in interface Digest
public void update(byte in) throws java.lang.IllegalStateException
Mac
public void update(byte[] in, int inOff, int len) throws DataLengthException, java.lang.IllegalStateException
Digest
update
in interface Digest
update
in interface Mac
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.DataLengthException
- if there isn't enough data in in.java.lang.IllegalStateException
- if the MAC is not initialised.public int doFinal(byte[] out, int outOff) throws DataLengthException, java.lang.IllegalStateException
Mac
doFinal leaves the MAC in the same state it was after the last init.
doFinal
in interface Digest
doFinal
in interface Mac
out
- the array the MAC is to be output to.outOff
- the offset into the out buffer the output is to start at.DataLengthException
- if there isn't enough space in out.java.lang.IllegalStateException
- if the MAC is not initialised.public int doFinal(byte[] out, int outOff, int outLen)
Xof
public int doOutput(byte[] out, int outOff, int outLen)
Xof