Class KeccakDigest
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- All Implemented Interfaces:
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io.anyline.nfc.bouncycastle.crypto.Digest
,io.anyline.nfc.bouncycastle.crypto.ExtendedDigest
public class KeccakDigest implements ExtendedDigest
implementation of Keccak based on following KeccakNISTInterface.c from https://keccak.noekeon.org/
Following the naming conventions used in the C source code to enable easy review of the implementation.
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Constructor Summary
Constructors Constructor Description KeccakDigest()
KeccakDigest(int bitLength)
KeccakDigest(KeccakDigest source)
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Method Summary
Modifier and Type Method Description String
getAlgorithmName()
return the algorithm name int
getDigestSize()
return the size, in bytes, of the digest produced by this message digest. void
update(byte in)
update the message digest with a single byte. void
update(Array<byte> in, int inOff, int len)
update the message digest with a block of bytes. int
doFinal(Array<byte> out, int outOff)
close the digest, producing the final digest value. void
reset()
reset the digest back to it's initial state. int
getByteLength()
Return the size of block that the compression function is applied to in bytes. -
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Constructor Detail
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KeccakDigest
KeccakDigest()
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KeccakDigest
KeccakDigest(int bitLength)
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KeccakDigest
KeccakDigest(KeccakDigest source)
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Method Detail
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getAlgorithmName
String getAlgorithmName()
return the algorithm name
- Returns:
the algorithm name
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getDigestSize
int getDigestSize()
return the size, in bytes, of the digest produced by this message digest.
- Returns:
the size, in bytes, of the digest produced by this message digest.
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update
void update(byte in)
update the message digest with a single byte.
- Parameters:
in
- the input byte to be entered.
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update
void update(Array<byte> in, int inOff, int len)
update the message digest with a block of bytes.
- Parameters:
in
- the byte array containing the data.inOff
- the offset into the byte array where the data starts.len
- the length of the data.
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doFinal
int doFinal(Array<byte> out, int outOff)
close the digest, producing the final digest value. The doFinal call leaves the digest reset.
- Parameters:
out
- the array the digest is to be copied into.outOff
- the offset into the out array the digest is to start at.
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reset
void reset()
reset the digest back to it's initial state.
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getByteLength
int getByteLength()
Return the size of block that the compression function is applied to in bytes.
- Returns:
internal byte length of a block.
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