Class XMSSParameters

java.lang.Object

org.bouncycastle.crypto.params.XMSSParameters

public final class XMSSParameters
extends Object

XMSS Parameters.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MAX_HEIGHT	The tallest tree whose leaves an int index can count.

Constructor Summary

Constructors

Constructor	Description
XMSSParameters(int height, ASN1ObjectIdentifier treeDigestOID)	XMSS Constructor...
XMSSParameters(int height, ASN1ObjectIdentifier treeDigestOID, int n)	XMSS Constructor with explicit security parameter n.
XMSSParameters(int height, Digest treeDigest)	XMSS Constructor...

Method Summary

Modifier and Type	Method	Description
int	getHeight()	Getter height.
int	getK()
int	getLen()
int	getParameterSetOID()	Return the RFC 8391 / SP 800-208 parameter-set identifier for this parameter set (the 4-octet value carried at the start of an RFC 9802 encoded key), or 0 if these parameters do not correspond to a standard set (for example a non-standard tree height).
String	getTreeDigest()
ASN1ObjectIdentifier	getTreeDigestOID()	Return the tree digest OID.
int	getTreeDigestSize()	Getter digest size.
int	getWinternitzParameter()	Getter Winternitz parameter.
static XMSSParameters	lookupByOID(int oid)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

MAX_HEIGHT

public static final int MAX_HEIGHT

The tallest tree whose leaves an int index can count. Shared with BDS.validate(), which refuses a traversal state outside it.

See Also:

• Constant Field Values

Constructor Details

XMSSParameters

public XMSSParameters(int height,
 Digest treeDigest)

XMSS Constructor...

Parameters:

height - Height of tree.

treeDigest - Digest to use.

XMSSParameters

public XMSSParameters(int height,
 ASN1ObjectIdentifier treeDigestOID)

XMSS Constructor...

Parameters:

height - Height of tree.

treeDigestOID - OID of digest to use.

XMSSParameters

public XMSSParameters(int height,
 ASN1ObjectIdentifier treeDigestOID,
 int n)

XMSS Constructor with explicit security parameter n.

Parameters:

height - Height of tree.

treeDigestOID - OID of digest to use.

n - Security parameter (digest output size in bytes), or -1 to derive from digest.

Method Details

getTreeDigestSize

public int getTreeDigestSize()

Getter digest size.

Returns:

Digest size.

getTreeDigestOID

public ASN1ObjectIdentifier getTreeDigestOID()

Return the tree digest OID.

Returns:

OID for digest used to build the tree.

getParameterSetOID

public int getParameterSetOID()

Return the RFC 8391 / SP 800-208 parameter-set identifier for this parameter set (the 4-octet value carried at the start of an RFC 9802 encoded key), or 0 if these parameters do not correspond to a standard set (for example a non-standard tree height).

Returns:

the 4-octet parameter-set identifier, or 0 if none.

getHeight

public int getHeight()

Getter height.

Returns:

XMSS tree height.

getTreeDigest

public String getTreeDigest()

getLen

public int getLen()

getWinternitzParameter

public int getWinternitzParameter()

Getter Winternitz parameter.

Returns:

Winternitz parameter.

getK

public int getK()

lookupByOID

public static XMSSParameters lookupByOID(int oid)