CompositeIndex (Bouncy Castle Library 1.85.2 API Specification)

```
public class CompositeIndex
extends java.lang.Object
```
Registry of the Composite ML-KEM parameter sets from Composite ML-KEM for use in X.509 Public Key Infrastructure. For each composite OID it holds the component algorithm pair, the human-readable algorithm name, and the KEM combiner domain separator ("Label") used in section 3.4.

Constructors
Constructor and Description
`CompositeIndex()`

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static java.lang.String`	`getAlgorithmName(ASN1ObjectIdentifier algorithm)`
`static byte[]`	`getKEMLabel(ASN1ObjectIdentifier oid)` Get the KEM combiner domain separator ("Label") for a Composite KEM OID (section 3.4 / section 6).
`static java.security.spec.AlgorithmParameterSpec[]`	`getKeyPairSpecs(ASN1ObjectIdentifier algorithm)` Per-component `AlgorithmParameterSpec`s used to initialise the component KeyPairGenerators, in pairing order.
`static java.lang.String[]`	`getPairing(ASN1ObjectIdentifier algorithm)`
`static java.util.Set<ASN1ObjectIdentifier>`	`getSupportedIdentifiers()`
`static java.lang.String`	`getTraditionalAlgorithmName(ASN1ObjectIdentifier oid)` Get the traditional algorithm component name for a Composite KEM OID.
`static boolean`	`isCompositeKEMOID(ASN1ObjectIdentifier oid)` Check if OID is a Composite KEM OID.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

getKeyPairSpecs
```
public static java.security.spec.AlgorithmParameterSpec[] getKeyPairSpecs(ASN1ObjectIdentifier algorithm)
```
Per-component AlgorithmParameterSpecs used to initialise the component KeyPairGenerators, in pairing order. An entry may be null when the component's KeyPairGenerator name already fixes the parameter set (ML-KEM, X25519, X448).

public static java.util.Set<ASN1ObjectIdentifier> getSupportedIdentifiers()

public static java.lang.String getAlgorithmName(ASN1ObjectIdentifier algorithm)

public static java.lang.String[] getPairing(ASN1ObjectIdentifier algorithm)

public static boolean isCompositeKEMOID(ASN1ObjectIdentifier oid)

Check if OID is a Composite KEM OID.

getKEMLabel
```
public static byte[] getKEMLabel(ASN1ObjectIdentifier oid)
```
Get the KEM combiner domain separator ("Label") for a Composite KEM OID (section 3.4 / section 6).

getTraditionalAlgorithmName
```
public static java.lang.String getTraditionalAlgorithmName(ASN1ObjectIdentifier oid)
```
Get the traditional algorithm component name for a Composite KEM OID.

Class CompositeIndex