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

Field Summary

Modifier and Type	Field and Description
private byte[]	concHashs Byte array for storing the concatenated hashes of private key parts
private GMSSRandom	gmssRandom The source of randomness for OTS private key generation
private int	i indices for distributed computation
private int	j indices for distributed computation
private int	keysize The length of the message digest and private key
private byte[]	leaf Byte array for distributed computation of the upcoming leaf
private int	mdsize The length of the message digest and private key
private Digest	messDigestOTS The hash function used by the OTS and the PRNG
pack-priv byte[]	privateKeyOTS the OTS privateKey parts
private byte[]	seed the internal seed
private int	steps the amount of distributed computation steps when updateLeaf is called
private int	two_power_w storing 2^w
private int	w Winternitz parameter w

Constructor Summary

Access	Constructor and Description
public	GMSSLeaf(Digest an array of strings, containing the name of the used hash function and PRNG and the name of the corresponding provider digest, byte[][] status bytes otsIndex, int[] status ints numLeafs) This constructor regenerates a prior GMSSLeaf object
pack-priv	GMSSLeaf(Digest an array of strings, containing the digest of the used hash function and PRNG and the digest of the corresponding provider digest, int the winterniz parameter of that tree the leaf is computed for w, int the number of leafs of the tree from where the distributed computation is called numLeafs) The constructor precomputes some needed variables for distributed leaf calculation
public	GMSSLeaf(Digest digest, int w, int numLeafs, byte[] seed0)
private	GMSSLeaf(GMSSLeaf original)

Method Summary

Modifier and Type	Method and Description
public byte[]	Returns: the leaf value getLeaf() Returns the leaf value.
private 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 status bytes getStatByte() Returns the status byte array used by the GMSSPrivateKeyASN.1 class
public int[]	Returns: The status ints getStatInt() Returns the status int array used by the GMSSPrivateKeyASN.1 class
pack-priv void	initLeafCalc(byte[] the starting seed seed0) initialize the distributed leaf calculation reset i,j and compute OTSseed with seed0
pack-priv GMSSLeaf	nextLeaf()
public String	Returns: a String representation of the main part of this element toString() Overrides java.lang.Object.toString. Returns a String representation of the main part of this element
private void	Returns: true if leaf is completed, else false updateLeafCalc() Processes `steps` steps of distributed leaf calculation

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

Field Detail

concHashs	back to summary
private byte[] concHashs Byte array for storing the concatenated hashes of private key parts

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

i	back to summary
private int i indices for distributed computation

j	back to summary
private int j indices for distributed computation

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

leaf	back to summary
private byte[] leaf Byte array for distributed computation of the upcoming leaf

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

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

privateKeyOTS	back to summary
pack-priv byte[] privateKeyOTS the OTS privateKey parts

seed	back to summary
private byte[] seed the internal seed

steps	back to summary
private int steps the amount of distributed computation steps when updateLeaf is called

two_power_w	back to summary
private int two_power_w storing 2^w

w	back to summary
private int w Winternitz parameter w

Constructor Detail

GMSSLeaf	back to summary
public GMSSLeaf(Digest digest, byte[][] otsIndex, int[] numLeafs) This constructor regenerates a prior GMSSLeaf object Parameters digest:Digest an array of strings, containing the name of the used hash function and PRNG and the name of the corresponding provider otsIndex:byte[][] status bytes numLeafs:int[] status ints

GMSSLeaf

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public GMSSLeaf(Digest digest, byte[][] otsIndex, int[] numLeafs)

This constructor regenerates a prior GMSSLeaf object

Parameters

digest:Digest: an array of strings, containing the name of the used hash function and PRNG and the name of the corresponding provider
otsIndex:byte[][]: status bytes
numLeafs:int[]: status ints

GMSSLeaf	back to summary
pack-priv GMSSLeaf(Digest digest, int w, int numLeafs) The constructor precomputes some needed variables for distributed leaf calculation Parameters digest:Digest an array of strings, containing the digest of the used hash function and PRNG and the digest of the corresponding provider w:int the winterniz parameter of that tree the leaf is computed for numLeafs:int the number of leafs of the tree from where the distributed computation is called

GMSSLeaf

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pack-priv GMSSLeaf(Digest digest, int w, int numLeafs)

The constructor precomputes some needed variables for distributed leaf calculation

Parameters

digest:Digest: an array of strings, containing the digest of the used hash function and PRNG and the digest of the corresponding provider
w:int: the winterniz parameter of that tree the leaf is computed for
numLeafs:int: the number of leafs of the tree from where the distributed computation is called

GMSSLeaf	back to summary
public GMSSLeaf(Digest digest, int w, int numLeafs, byte[] seed0)

GMSSLeaf	back to summary
private GMSSLeaf(GMSSLeaf original)

Method Detail

getLeaf	back to summary
public byte[] getLeaf() Returns the leaf value. Returns:byte[] the leaf value

getLeaf

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public byte[] getLeaf()

Returns the leaf value.

Returns:byte[]: the leaf value

getLog back to summary

getLog	back to summary
private 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`

private 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

getStatByte	back to summary
public byte[][] getStatByte() Returns the status byte array used by the GMSSPrivateKeyASN.1 class Returns:byte[][] The status bytes

getStatByte

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public byte[][] getStatByte()

Returns the status byte array used by the GMSSPrivateKeyASN.1 class

Returns:byte[][]: The status bytes

getStatInt	back to summary
public int[] getStatInt() Returns the status int array used by the GMSSPrivateKeyASN.1 class Returns:int[] The status ints

getStatInt

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public int[] getStatInt()

Returns the status int array used by the GMSSPrivateKeyASN.1 class

Returns:int[]: The status ints

initLeafCalc	back to summary
pack-priv void initLeafCalc(byte[] seed0) initialize the distributed leaf calculation reset i,j and compute OTSseed with seed0 Parameters seed0:byte[] the starting seed

initLeafCalc

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pack-priv void initLeafCalc(byte[] seed0)

initialize the distributed leaf calculation reset i,j and compute OTSseed with seed0

Parameters

seed0:byte[]: the starting seed

nextLeaf	back to summary
pack-priv GMSSLeaf nextLeaf()

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Returns a String representation of the main part of this element Returns:String a String representation of the main part of this element

toString

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public String toString()

Overrides java.lang.Object.toString.

Returns a String representation of the main part of this element

Returns:String: a String representation of the main part of this element

updateLeafCalc back to summary

updateLeafCalc	back to summary
private void updateLeafCalc() Processes `steps` steps of distributed leaf calculation Returns:void true if leaf is completed, else false

private void updateLeafCalc()

Processes steps steps of distributed leaf calculation

Returns:void: true if leaf is completed, else false

public Class GMSSLeaf

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail