Class HSSPrivateKeyParameters

java.lang.Object

org.bouncycastle.crypto.params.AsymmetricKeyParameter

org.bouncycastle.crypto.params.LMSKeyParameters

org.bouncycastle.crypto.params.HSSPrivateKeyParameters

All Implemented Interfaces:

Destroyable, CipherParameters, LMSContextBasedSigner, Encodable

public class HSSPrivateKeyParameters
extends LMSKeyParameters
implements LMSContextBasedSigner, Destroyable

Constructor Summary

Constructors

Constructor	Description
HSSPrivateKeyParameters(int l, List<LMSPrivateKeyParameters> keys, List<LMSSignature> sig, long index, long indexLimit)
HSSPrivateKeyParameters(LMSPrivateKeyParameters key, long index, long indexLimit)

Method Summary

Modifier and Type	Method	Description
protected Object	clone()
void	destroy()	Destroy this key, zeroizing the master secret of every tree in the hierarchy.
boolean	equals(Object o)
HSSPrivateKeyParameters	extractKeyShard(int usageCount)	Return a key that can be used usageCount times.
LMSContext	generateLMSContext()
byte[]	generateSignature(LMSContext context)
byte[]	getEncoded()	Return a byte array representing the implementing object.
long	getIndex()
long	getIndexLimit()	Return the index one past the last this key may sign with.
static HSSPrivateKeyParameters	getInstance(byte[] privEnc, byte[] pubEnc)
static HSSPrivateKeyParameters	getInstance(Object src)
int	getL()
LMSParameters[]	getLMSParameters()
HSSPublicKeyParameters	getPublicKey()
long	getUsagesRemaining()
int	hashCode()
boolean	isDestroyed()
boolean	isShard()	Return true if this key was split off another with extractKeyShard(int) and so covers a sub-range of that key's indexes.

Methods inherited from class AsymmetricKeyParameter

isPrivate

Methods inherited from class Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

HSSPrivateKeyParameters

public HSSPrivateKeyParameters(LMSPrivateKeyParameters key,
 long index,
 long indexLimit)

HSSPrivateKeyParameters

public HSSPrivateKeyParameters(int l,
 List<LMSPrivateKeyParameters> keys,
 List<LMSSignature> sig,
 long index,
 long indexLimit)

Method Details

getInstance

public static HSSPrivateKeyParameters getInstance(byte[] privEnc,
 byte[] pubEnc)
                                           throws IOException

Throws:

IOException

getInstance

public static HSSPrivateKeyParameters getInstance(Object src)
                                           throws IOException

Throws:

IOException

getL

public int getL()

getIndex

public long getIndex()

getLMSParameters

public LMSParameters[] getLMSParameters()

isShard

public boolean isShard()

Return true if this key was split off another with extractKeyShard(int) and so covers a sub-range of that key's indexes.

getIndexLimit

public long getIndexLimit()

Return the index one past the last this key may sign with.

getUsagesRemaining

public long getUsagesRemaining()

Specified by:

getUsagesRemaining in interface LMSContextBasedSigner

extractKeyShard

public HSSPrivateKeyParameters extractKeyShard(int usageCount)

Return a key that can be used usageCount times.

Note: this will use the range [index...index + usageCount) for the current key.

Parameters:

usageCount - the number of usages the key should have.

Returns:

a key based on the current key that can be used usageCount times.

getPublicKey

public HSSPublicKeyParameters getPublicKey()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

getEncoded

public byte[] getEncoded()
                  throws IOException

Description copied from interface: Encodable

Return a byte array representing the implementing object.

Specified by:

getEncoded in interface Encodable

Specified by:

getEncoded in class LMSKeyParameters

Returns:

a byte array representing the encoding.

Throws:

IOException - if an issue arises generation the encoding.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

clone

protected Object clone()
                throws CloneNotSupportedException

Overrides:

clone in class Object

Throws:

CloneNotSupportedException

generateLMSContext

public LMSContext generateLMSContext()

Specified by:

generateLMSContext in interface LMSContextBasedSigner

generateSignature

public byte[] generateSignature(LMSContext context)

Specified by:

generateSignature in interface LMSContextBasedSigner

destroy

public void destroy()

Destroy this key, zeroizing the master secret of every tree in the hierarchy.

The chaining signatures, the indexes and the component keys' identifiers and cached tree nodes are retained - none of them is secret, and the public key stays derivable where the root tree's root node is already cached. After destruction isDestroyed() returns true and getEncoded(), generateLMSContext() and extractKeyShard(int) throw IllegalStateException; a signature attempt fails before its index is claimed. Shards split off this key before it was destroyed are independent copies and are unaffected.

Specified by:

destroy in interface Destroyable

isDestroyed

public boolean isDestroyed()

Specified by:

isDestroyed in interface Destroyable