Class Ed25519PublicKeyBuilder

java.lang.Object

zeroecho.core.alg.common.eddsa.AbstractEncodedPublicKeyBuilder<Ed25519PublicKeySpec>

zeroecho.core.alg.ed25519.Ed25519PublicKeyBuilder

All Implemented Interfaces:

PublicKeyImporter<Ed25519PublicKeySpec>

public final class Ed25519PublicKeyBuilder
extends AbstractEncodedPublicKeyBuilder<Ed25519PublicKeySpec>

Public key builder for Ed25519

Concrete PublicKeyImporter for importing wrapping Ed25519 public keys.

This builder integrates with the JCA under the canonical key factory algorithm name "Ed25519". It consumes an Ed25519PublicKeySpec, which provides the encoded X.509 representation of the public key.

Responsibilities

• Expose the JCA key factory name "Ed25519" for interoperability.
• Provide the encoded X.509 bytes via Ed25519PublicKeySpec.encoded() for key material import.

Usage example

// Import a public key from its encoded X.509 form
Ed25519PublicKeySpec spec = new Ed25519PublicKeySpec(x509Bytes);
PublicKey publicKey = session.keyBuilders().asymmetric().importPublic("Ed25519", spec);

Thread-safety

Instances of this builder are stateless and may be reused safely across threads.

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
Ed25519PublicKeyBuilder()	Creates a stateless Ed25519 public-key importer.

Method Summary

Modifier and Type	Method	Description
protected byte[]	encodedX509(Ed25519PublicKeySpec spec)	Returns the X.509 encoded bytes from the given key spec.
protected String	jcaKeyFactoryAlg()	Returns the canonical JCA algorithm name for Ed25519 key factories.

Methods inherited from class AbstractEncodedPublicKeyBuilder

importPublic

Methods inherited from class Object

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

Constructor Details

Ed25519PublicKeyBuilder

public Ed25519PublicKeyBuilder()

Creates a stateless Ed25519 public-key importer.

Method Details

jcaKeyFactoryAlg

protected String jcaKeyFactoryAlg()

Returns the canonical JCA algorithm name for Ed25519 key factories.

This value is used by the parent AbstractEncodedPublicKeyBuilder to obtain a KeyFactory.

Specified by:

jcaKeyFactoryAlg in class AbstractEncodedPublicKeyBuilder<Ed25519PublicKeySpec>

Returns:

the string "Ed25519"

encodedX509

protected byte[] encodedX509(Ed25519PublicKeySpec spec)

Returns the X.509 encoded bytes from the given key spec.

This encoding is passed to the JCA KeyFactory for parsing into a PublicKey instance.

Specified by:

encodedX509 in class AbstractEncodedPublicKeyBuilder<Ed25519PublicKeySpec>

Parameters:

spec - the public key specification holding the X.509 encoding

Returns:

a defensive copy of the X.509-encoded key bytes