Package org.bouncycastle.crypto.macs
Class GOST28147Mac
- java.lang.Object
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- org.bouncycastle.crypto.macs.GOST28147Mac
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Constructor Summary
Constructors Constructor Description GOST28147Mac()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
doFinal(byte[] out, int outOff)
Compute the final stage of the MAC writing the output to the out parameter.String
getAlgorithmName()
Return the name of the algorithm the MAC implements.int
getMacSize()
Return the block size for this MAC (in bytes).void
init(CipherParameters params)
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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init
public void init(CipherParameters params) throws IllegalArgumentException
Description copied from interface:Mac
Initialise the MAC.- Specified by:
init
in interfaceMac
- Parameters:
params
- the key and other data required by the MAC.- Throws:
IllegalArgumentException
- if the params argument is inappropriate.
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getAlgorithmName
public String getAlgorithmName()
Description copied from interface:Mac
Return the name of the algorithm the MAC implements.- Specified by:
getAlgorithmName
in interfaceMac
- Returns:
- the name of the algorithm the MAC implements.
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getMacSize
public int getMacSize()
Description copied from interface:Mac
Return the block size for this MAC (in bytes).- Specified by:
getMacSize
in interfaceMac
- Returns:
- the block size for this MAC in bytes.
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update
public void update(byte in) throws IllegalStateException
Description copied from interface:Mac
add a single byte to the mac for processing.- Specified by:
update
in interfaceMac
- Parameters:
in
- the byte to be processed.- Throws:
IllegalStateException
- if the MAC is not initialised.
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update
public void update(byte[] in, int inOff, int len) throws DataLengthException, IllegalStateException
- Specified by:
update
in interfaceMac
- Parameters:
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.- Throws:
DataLengthException
- if there isn't enough data in in.IllegalStateException
- if the MAC is not initialised.
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doFinal
public int doFinal(byte[] out, int outOff) throws DataLengthException, IllegalStateException
Description copied from interface:Mac
Compute the final stage of the MAC writing the output to the out parameter.doFinal leaves the MAC in the same state it was after the last init.
- Specified by:
doFinal
in interfaceMac
- Parameters:
out
- the array the MAC is to be output to.outOff
- the offset into the out buffer the output is to start at.- Throws:
DataLengthException
- if there isn't enough space in out.IllegalStateException
- if the MAC is not initialised.
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