Package zeroecho.core.alg.ed448

Class Ed448PublicKeyBuilder

java.lang.Object

zeroecho.core.alg.common.eddsa.AbstractEncodedPublicKeyBuilder<Ed448PublicKeySpec>

zeroecho.core.alg.ed448.Ed448PublicKeyBuilder

All Implemented Interfaces:

AsymmetricKeyBuilder<Ed448PublicKeySpec>

public final class Ed448PublicKeyBuilder
extends AbstractEncodedPublicKeyBuilder<Ed448PublicKeySpec>

Ed448 Public Key Builder

Concrete builder for importing Ed448 public keys from their X.509-encoded representation.

This class extends AbstractEncodedPublicKeyBuilder and specifies the Ed448 algorithm. It reconstructs PublicKey instances from Ed448PublicKeySpec, which carries the raw encoded form.

Responsibilities

• Provide the canonical JCA key factory algorithm name ("Ed448").
• Extract the X.509-encoded key bytes from Ed448PublicKeySpec.
• Delegate actual key reconstruction to KeyFactory.

Usage

 // Import an Ed448 public key from encoded bytes
 Ed448PublicKeySpec spec = new Ed448PublicKeySpec(x509Bytes);
 PublicKey key = new Ed448PublicKeyBuilder().importPublic(spec);
 

Thread-safety

Stateless and safe for concurrent use. Each call to importPublic(Ed448PublicKeySpec) creates a new KeyFactory.

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
Ed448PublicKeyBuilder()

Method Summary

Modifier and Type	Method	Description
protected byte[]	encodedX509(Ed448PublicKeySpec spec)	Returns the X.509-encoded public key bytes from the given specification.
protected String	jcaKeyFactoryAlg()	Returns the canonical JCA key factory algorithm name for Ed448.

Methods inherited from class zeroecho.core.alg.common.eddsa.AbstractEncodedPublicKeyBuilder

generateKeyPair, importPrivate, importPublic

Methods inherited from class java.lang.Object

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

Constructor Details

Ed448PublicKeyBuilder

public Ed448PublicKeyBuilder()

Method Details

jcaKeyFactoryAlg

protected String jcaKeyFactoryAlg()

Returns the canonical JCA key factory algorithm name for Ed448.

Specified by:

jcaKeyFactoryAlg in class AbstractEncodedPublicKeyBuilder<Ed448PublicKeySpec>

Returns:

the string "Ed448"

encodedX509

protected byte[] encodedX509(Ed448PublicKeySpec spec)

Returns the X.509-encoded public key bytes from the given specification.

Specified by:

encodedX509 in class AbstractEncodedPublicKeyBuilder<Ed448PublicKeySpec>

Parameters:

spec - the Ed448PublicKeySpec holding encoded public key data

Returns:

raw X.509-encoded public key bytes