Bouncy Castle Provider 1.77 · org.bouncycastle.pqc.legacy.crypto.gmss.GMSSKeyPairGenerator

Field Summary

Modifier and Type	Field and Description
private byte[][]	currentRootSigs An array of the RootSignatures
private byte[][]	currentSeeds An array of the seeds for the PRGN (for main tree, and all current subtrees)
private GMSSDigestProvider	digestProvider Class of hash function to use
private GMSSKeyGenerationParameters	gmssParams
private GMSSParameters	gmssPS Instance of GMSSParameterset
private GMSSRandom	gmssRandom The source of randomness for OTS private key generation
private int[]	heightOfTrees An array of the heights of the authentication trees of each layer
private boolean	initialized Flag indicating if the class already has been initialized
private int[]	K The parameter K needed for the authentication path computation
private int	mdLength The length of the seed for the PRNG
private Digest	messDigestTree The hash function used for the construction of the authentication trees
private byte[][]	nextNextSeeds An array of seeds for the PRGN (for all subtrees after next)
private int	numLayer the number of Layers
public static final String	OID The GMSS OID.
private int[]	otsIndex An array of the Winternitz parameter 'w' of each layer

Constructor Summary

Access	Constructor and Description
public	GMSSKeyPairGenerator(GMSSDigestProvider provider for digest implementations. digestProvider) The standard constructor tries to generate the GMSS algorithm identifier with the corresponding OID.

Method Summary

Modifier and Type	Method and Description
private GMSSRootCalc	generateCurrentAuthpathAndRoot(byte[] stores the root of the lower tree lowerRoot, Vector<E> stack used for the treehash instance created by this method currentStack, byte[] starting seeds seed, int actual layer h) calculates the authpath for tree in layer h which starts with seed[h] additionally computes the rootSignature of underlaying root
public AsymmetricCipherKeyPair	generateKeyPair() Implements org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.generateKeyPair. return an AsymmetricCipherKeyPair containing the generated keys.
private GMSSRootCalc	generateNextAuthpathAndRoot(Vector<E> stack used for the treehash instance created by this method nextStack, byte[] starting seeds seed, int actual layer h) calculates the authpath and root for tree in layer h which starts with seed[h]
private AsymmetricCipherKeyPair	Returns: Key pair containing a JDKGMSSPublicKey and a JDKGMSSPrivateKey genKeyPair() Generates the GMSS key pair.
public void	init(KeyGenerationParameters the parameters the key pair is to be initialised with. param) Implements org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.init. intialise the key pair generator.
public void	initialize(int Assigns the parameters used for the GMSS signatures. There are 3 choices: 1. keysize <= 10: creates 2^10 signatures using the parameterset P = (2, (5, 5), (3, 3), (3, 3)) 2. keysize > 10 and <= 20: creates 2^20 signatures using the parameterset P = (2, (10, 10), (5, 4), (2, 2)) 3. keysize > 20: creates 2^40 signatures using the parameterset P = (2, (10, 10, 10, 10), (9, 9, 9, 3), (2, 2, 2, 2)) keySize, SecureRandom not used by GMSS, the SHA1PRNG of the SUN Provider is always used secureRandom) This method initializes the GMSS KeyPairGenerator using an integer value `keySize` as input.
public void	initialize(KeyGenerationParameters param) Initalizes the key pair generator using a parameter set as input
private void	initializeDefault() This method is called by generateKeyPair() in case that no other initialization method has been called by the user

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

Field Detail

currentRootSigs	back to summary
private byte[][] currentRootSigs An array of the RootSignatures

currentSeeds	back to summary
private byte[][] currentSeeds An array of the seeds for the PRGN (for main tree, and all current subtrees)

digestProvider	back to summary
private GMSSDigestProvider digestProvider Class of hash function to use

gmssParams	back to summary
private GMSSKeyGenerationParameters gmssParams

gmssPS	back to summary
private GMSSParameters gmssPS Instance of GMSSParameterset

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

heightOfTrees	back to summary
private int[] heightOfTrees An array of the heights of the authentication trees of each layer

initialized	back to summary
private boolean initialized Flag indicating if the class already has been initialized

K	back to summary
private int[] K The parameter K needed for the authentication path computation

mdLength	back to summary
private int mdLength The length of the seed for the PRNG

messDigestTree	back to summary
private Digest messDigestTree The hash function used for the construction of the authentication trees

nextNextSeeds	back to summary
private byte[][] nextNextSeeds An array of seeds for the PRGN (for all subtrees after next)

numLayer	back to summary
private int numLayer the number of Layers

OID	back to summary
public static final String OID The GMSS OID.

otsIndex	back to summary
private int[] otsIndex An array of the Winternitz parameter 'w' of each layer

Constructor Detail

GMSSKeyPairGenerator	back to summary
public GMSSKeyPairGenerator(GMSSDigestProvider digestProvider) The standard constructor tries to generate the GMSS algorithm identifier with the corresponding OID. Parameters digestProvider:GMSSDigestProvider provider for digest implementations.

GMSSKeyPairGenerator

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public GMSSKeyPairGenerator(GMSSDigestProvider digestProvider)

The standard constructor tries to generate the GMSS algorithm identifier with the corresponding OID.

Parameters

digestProvider:GMSSDigestProvider: provider for digest implementations.

Method Detail

generateCurrentAuthpathAndRoot	back to summary
private GMSSRootCalc generateCurrentAuthpathAndRoot(byte[] lowerRoot, Vector<E> currentStack, byte[] seed, int h) calculates the authpath for tree in layer h which starts with seed[h] additionally computes the rootSignature of underlaying root Parameters lowerRoot:byte[] stores the root of the lower tree currentStack:Vector<E> stack used for the treehash instance created by this method seed:byte[] starting seeds h:int actual layer

generateCurrentAuthpathAndRoot

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private GMSSRootCalc generateCurrentAuthpathAndRoot(byte[] lowerRoot, Vector<E> currentStack, byte[] seed, int h)

calculates the authpath for tree in layer h which starts with seed[h] additionally computes the rootSignature of underlaying root

Parameters

lowerRoot:byte[]: stores the root of the lower tree
currentStack:Vector<E>: stack used for the treehash instance created by this method
seed:byte[]: starting seeds
h:int: actual layer

generateKeyPair	back to summary
public AsymmetricCipherKeyPair generateKeyPair() Implements org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.generateKeyPair. Doc from org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.generateKeyPair. return an AsymmetricCipherKeyPair containing the generated keys. Returns:AsymmetricCipherKeyPair an AsymmetricCipherKeyPair containing the generated keys.

generateKeyPair

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public AsymmetricCipherKeyPair generateKeyPair()

Implements org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.generateKeyPair.

Doc from org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.generateKeyPair.

return an AsymmetricCipherKeyPair containing the generated keys.

Returns:AsymmetricCipherKeyPair: an AsymmetricCipherKeyPair containing the generated keys.

generateNextAuthpathAndRoot	back to summary
private GMSSRootCalc generateNextAuthpathAndRoot(Vector<E> nextStack, byte[] seed, int h) calculates the authpath and root for tree in layer h which starts with seed[h] Parameters nextStack:Vector<E> stack used for the treehash instance created by this method seed:byte[] starting seeds h:int actual layer

generateNextAuthpathAndRoot

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private GMSSRootCalc generateNextAuthpathAndRoot(Vector<E> nextStack, byte[] seed, int h)

calculates the authpath and root for tree in layer h which starts with seed[h]

Parameters

nextStack:Vector<E>: stack used for the treehash instance created by this method
seed:byte[]: starting seeds
h:int: actual layer

genKeyPair	back to summary
private AsymmetricCipherKeyPair genKeyPair() Generates the GMSS key pair. The public key is an instance of JDKGMSSPublicKey, the private key is an instance of JDKGMSSPrivateKey. Returns:AsymmetricCipherKeyPair Key pair containing a JDKGMSSPublicKey and a JDKGMSSPrivateKey

genKeyPair

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private AsymmetricCipherKeyPair genKeyPair()

Generates the GMSS key pair. The public key is an instance of JDKGMSSPublicKey, the private key is an instance of JDKGMSSPrivateKey.

Returns:AsymmetricCipherKeyPair: Key pair containing a JDKGMSSPublicKey and a JDKGMSSPrivateKey

init	back to summary
public void init(KeyGenerationParameters param) Implements org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.init. Doc from org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.init. intialise the key pair generator. Parameters param:KeyGenerationParameters the parameters the key pair is to be initialised with.

init

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public void init(KeyGenerationParameters param)

Implements org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.init.

Doc from org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator.init.

intialise the key pair generator.

Parameters

param:KeyGenerationParameters: the parameters the key pair is to be initialised with.

initialize back to summary

initialize	back to summary
public void initialize(int keySize, SecureRandom secureRandom) This method initializes the GMSS KeyPairGenerator using an integer value `keySize` as input. It provides a simple use of the GMSS for testing demands. A given `keysize` of less than 10 creates an amount 2^10 signatures. A keySize between 10 and 20 creates 2^20 signatures. Given an integer greater than 20 the key pair generator creates 2^40 signatures. Parameters keySize:int Assigns the parameters used for the GMSS signatures. There are 3 choices: 1. keysize <= 10: creates 2^10 signatures using the parameterset P = (2, (5, 5), (3, 3), (3, 3)) 2. keysize > 10 and <= 20: creates 2^20 signatures using the parameterset P = (2, (10, 10), (5, 4), (2, 2)) 3. keysize > 20: creates 2^40 signatures using the parameterset P = (2, (10, 10, 10, 10), (9, 9, 9, 3), (2, 2, 2, 2)) secureRandom:SecureRandom not used by GMSS, the SHA1PRNG of the SUN Provider is always used

public void initialize(int keySize, SecureRandom secureRandom)

This method initializes the GMSS KeyPairGenerator using an integer value keySize as input. It provides a simple use of the GMSS for testing demands.

A given keysize of less than 10 creates an amount 2^10 signatures. A keySize between 10 and 20 creates 2^20 signatures. Given an integer greater than 20 the key pair generator creates 2^40 signatures.

Parameters

keySize:int: Assigns the parameters used for the GMSS signatures. There are 3 choices:
1. keysize <= 10: creates 2^10 signatures using the parameterset
P = (2, (5, 5), (3, 3), (3, 3))
2. keysize > 10 and <= 20: creates 2^20 signatures using the parameterset
P = (2, (10, 10), (5, 4), (2, 2))
3. keysize > 20: creates 2^40 signatures using the parameterset
P = (2, (10, 10, 10, 10), (9, 9, 9, 3), (2, 2, 2, 2))
secureRandom:SecureRandom: not used by GMSS, the SHA1PRNG of the SUN Provider is always used

initialize	back to summary
public void initialize(KeyGenerationParameters param) Initalizes the key pair generator using a parameter set as input

initializeDefault	back to summary
private void initializeDefault() This method is called by generateKeyPair() in case that no other initialization method has been called by the user

public Class GMSSKeyPairGenerator

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail