Class SphincsPlusPrivateKeyBuilder

java.lang.Object

zeroecho.core.alg.sphincsplus.SphincsPlusPrivateKeyBuilder

All Implemented Interfaces:

PrivateKeyImporter<SphincsPlusPrivateKeySpec>

public final class SphincsPlusPrivateKeyBuilder
extends Object
implements PrivateKeyImporter<SphincsPlusPrivateKeySpec>

Builder for importing SPHINCS+ private keys from encoded specifications.

SphincsPlusPrivateKeyBuilder integrates with the JCA KeyFactory to parse PKCS#8-encoded SPHINCS+ private keys. Unlike SphincsPlusKeyGenBuilder, this builder does not generate new key pairs but focuses solely on importing private key material.

The exact supported operation is importPrivate(SphincsPlusPrivateKeySpec). Other key operations are registered through their own exact interfaces.

Example

// Assuming bytes contain a PKCS#8-encoded SPHINCS+ private key:
SphincsPlusPrivateKeySpec spec =
    new SphincsPlusPrivateKeySpec(encodedBytes, "BC");

PrivateKey priv =
    new SphincsPlusPrivateKeyBuilder().importPrivate(spec);

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
SphincsPlusPrivateKeyBuilder()	Creates a stateless SPHINCS+ private-key importer.

Method Summary

Modifier and Type	Method	Description
PrivateKey	importPrivate(SphincsPlusPrivateKeySpec spec)	Imports a SPHINCS+ private key from PKCS#8 encoding.

Methods inherited from class Object

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

Constructor Details

SphincsPlusPrivateKeyBuilder

public SphincsPlusPrivateKeyBuilder()

Creates a stateless SPHINCS+ private-key importer.

Method Details

importPrivate

public PrivateKey importPrivate(SphincsPlusPrivateKeySpec spec)
                         throws GeneralSecurityException

Imports a SPHINCS+ private key from PKCS#8 encoding.

The method uses KeyFactory with algorithm "SLH-DSA" and the provider specified in the spec. If no provider name is given, the default provider resolution is used.

Specified by:

importPrivate in interface PrivateKeyImporter<SphincsPlusPrivateKeySpec>

Parameters:

spec - private key specification containing PKCS#8-encoded key material and optional provider name

Returns:

the imported SPHINCS+ PrivateKey

Throws:

NullPointerException - if spec or its encoded bytes are null

GeneralSecurityException - if the key factory cannot be initialized or the encoded key is invalid