Class Ed25519PrivateKeyBuilder

java.lang.Object

zeroecho.core.alg.common.eddsa.AbstractEncodedPrivateKeyBuilder<Ed25519PrivateKeySpec>

zeroecho.core.alg.ed25519.Ed25519PrivateKeyBuilder

All Implemented Interfaces:

PrivateKeyImporter<Ed25519PrivateKeySpec>

public final class Ed25519PrivateKeyBuilder
extends AbstractEncodedPrivateKeyBuilder<Ed25519PrivateKeySpec>

Private key builder for Ed25519

Concrete PrivateKeyImporter for importing wrapping Ed25519 private keys.

This builder integrates with the JCA under the canonical key factory algorithm name "Ed25519". It consumes an Ed25519PrivateKeySpec, which provides the encoded PKCS#8 representation of the private key.

Responsibilities

• Expose the JCA key factory name "Ed25519" for interoperability.
• Provide the encoded PKCS#8 bytes via Ed25519PrivateKeySpec.encoded() for key material import.

Usage example

// Import a private key from its encoded PKCS#8 form
Ed25519PrivateKeySpec spec = new Ed25519PrivateKeySpec(pkcs8Bytes);
PrivateKey privateKey = session.keyBuilders().asymmetric().importPrivate("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
Ed25519PrivateKeyBuilder()	Creates a stateless Ed25519 private-key importer.

Method Summary

Modifier and Type	Method	Description
protected byte[]	encodedPkcs8(Ed25519PrivateKeySpec spec)	Returns the PKCS#8 encoded bytes from the given key spec.
protected String	jcaKeyFactoryAlg()	Returns the canonical JCA algorithm name for Ed25519 key factories.

Methods inherited from class AbstractEncodedPrivateKeyBuilder

importPrivate

Methods inherited from class Object

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

Constructor Details

Ed25519PrivateKeyBuilder

public Ed25519PrivateKeyBuilder()

Creates a stateless Ed25519 private-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 AbstractEncodedPrivateKeyBuilder to obtain a KeyFactory.

Specified by:

jcaKeyFactoryAlg in class AbstractEncodedPrivateKeyBuilder<Ed25519PrivateKeySpec>

Returns:

the string "Ed25519"

encodedPkcs8

protected byte[] encodedPkcs8(Ed25519PrivateKeySpec spec)

Returns the PKCS#8 encoded bytes from the given key spec.

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

Specified by:

encodedPkcs8 in class AbstractEncodedPrivateKeyBuilder<Ed25519PrivateKeySpec>

Parameters:

spec - the private key specification holding the PKCS#8 encoding

Returns:

a defensive copy of the PKCS#8-encoded key bytes