Bouncy Castle Cryptography Library 1.80 · org.bouncycastle.pqc.legacy.crypto.gmss.util.WinternitzOTSignature

Field Summary

Modifier and Type	Field and Description
private int	checksumsize Sizes of the message and the checksum, both
private GMSSRandom	gmssRandom The source of randomness for OTS private key generation
private int	keysize The length of the message digest and private key
private int	mdsize The length of the message digest and private key
private int	messagesize Sizes of the message and the checksum, both
private Digest	messDigestOTS The hash function used by the OTS
private byte[][]	privateKeyOTS The private key
private int	w The Winternitz parameter

Access	Constructor and Description
public	WinternitzOTSignature(byte[] the seed for the PRGN seed0, Digest an array of strings, containing the name of the used hash function, the name of the PRGN and the names of the corresponding providers digest, int the Winternitz parameter w) The constructor generates an OTS key pair, using `seed0` and the PRNG

Modifier and Type	Method and Description
public int	Returns: The least integer greater or equal to the logarithm to the base 2 of `intValue` getLog(int an integer intValue) This method returns the least integer that is greater or equal to the logarithm to the base 2 of an integer `intValue`.
public byte[][]	Returns: The private OTS key getPrivateKey()
public byte[]	Returns: The public OTS key getPublicKey()
public byte[]	Returns: The one-time signature of the message, generated with the private key getSignature(byte[] message)
private void	hashPrivateKeyBlock(int index, int rounds, byte[] buf, int off)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

checksumsize	back to summary
private int checksumsize Sizes of the message and the checksum, both

gmssRandom	back to summary
private GMSSRandom gmssRandom The source of randomness for OTS private key generation

keysize	back to summary
private int keysize The length of the message digest and private key

mdsize	back to summary
private int mdsize The length of the message digest and private key

messagesize	back to summary
private int messagesize Sizes of the message and the checksum, both

messDigestOTS	back to summary
private Digest messDigestOTS The hash function used by the OTS

privateKeyOTS	back to summary
private byte[][] privateKeyOTS The private key

w	back to summary
private int w The Winternitz parameter

WinternitzOTSignature back to summary

WinternitzOTSignature	back to summary
public WinternitzOTSignature(byte[] seed0, Digest digest, int w) The constructor generates an OTS key pair, using `seed0` and the PRNG Parameters seed0:byte[] the seed for the PRGN digest:Digest an array of strings, containing the name of the used hash function, the name of the PRGN and the names of the corresponding providers w:int the Winternitz parameter

public WinternitzOTSignature(byte[] seed0, Digest digest, int w)

The constructor generates an OTS key pair, using seed0 and the PRNG

Parameters

seed0:byte[]: the seed for the PRGN
digest:Digest: an array of strings, containing the name of the used hash function, the name of the PRGN and the names of the corresponding providers
w:int: the Winternitz parameter

getLog back to summary

getLog	back to summary
public int getLog(int intValue) This method returns the least integer that is greater or equal to the logarithm to the base 2 of an integer `intValue`. Parameters intValue:int an integer Returns:int The least integer greater or equal to the logarithm to the base 2 of `intValue`

public int getLog(int intValue)

This method returns the least integer that is greater or equal to the logarithm to the base 2 of an integer intValue.

Parameters

Returns:int

The least integer greater or equal to the logarithm to the base 2 of intValue

getPrivateKey	back to summary
public byte[][] getPrivateKey() Returns:byte[][] The private OTS key

getPublicKey	back to summary
public byte[] getPublicKey() Returns:byte[] The public OTS key

getSignature	back to summary
public byte[] getSignature(byte[] message) Returns:byte[] The one-time signature of the message, generated with the private key

hashPrivateKeyBlock	back to summary
private void hashPrivateKeyBlock(int index, int rounds, byte[] buf, int off)