Class EcdsaPrivateKeyBuilder

java.lang.Object

zeroecho.core.alg.ecdsa.EcdsaPrivateKeyBuilder

All Implemented Interfaces:

PrivateKeyImporter<EcdsaPrivateKeySpec>

public final class EcdsaPrivateKeyBuilder
extends Object
implements PrivateKeyImporter<EcdsaPrivateKeySpec>

ECDSA Private Key Builder

Implementation of PrivateKeyImporter for EcdsaPrivateKeySpec. This builder is responsible for importing ECDSA private keys from encoded representations.

The exact supported operation is importPrivate(EcdsaPrivateKeySpec). Generation and public import are registered through their own operation-specific implementations.

Encoding

The EcdsaPrivateKeySpec stores the private key in PKCS#8 DER format. This builder delegates to a JCA KeyFactory for the "EC" algorithm to reconstruct a usable PrivateKey.

Usage

Typically accessed through the session key-operation API or CryptoAlgorithm.privateKeyImporter(Class).

// Example: Import an ECDSA private key
byte[] pkcs8 = ...; // load PKCS#8 DER data
EcdsaPrivateKeySpec spec = new EcdsaPrivateKeySpec(pkcs8);
PrivateKey priv = new EcdsaPrivateKeyBuilder().importPrivate(spec);

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
EcdsaPrivateKeyBuilder()	Creates a stateless PKCS#8 EC private-key importer.

Method Summary

Modifier and Type	Method	Description
PrivateKey	importPrivate(EcdsaPrivateKeySpec spec)	Imports a private key from a PKCS#8 encoded specification.

Methods inherited from class Object

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

Constructor Details

EcdsaPrivateKeyBuilder

public EcdsaPrivateKeyBuilder()

Creates a stateless PKCS#8 EC private-key importer.

Method Details

importPrivate

public PrivateKey importPrivate(EcdsaPrivateKeySpec spec)
                         throws GeneralSecurityException

Imports a private key from a PKCS#8 encoded specification.

Uses a JCA KeyFactory instance for "EC" to parse the given EcdsaPrivateKeySpec and construct a PrivateKey.

Specified by:

importPrivate in interface PrivateKeyImporter<EcdsaPrivateKeySpec>

Parameters:

spec - private key specification containing PKCS#8 DER encoding

Returns:

reconstructed PrivateKey instance

Throws:

GeneralSecurityException - if the encoding is invalid or the key cannot be reconstructed