Class EcdsaKeyGenBuilder

java.lang.Object

zeroecho.core.alg.ecdsa.EcdsaKeyGenBuilder

All Implemented Interfaces:

AsymmetricKeyPairGenerator<EcdsaCurveSpec>

public final class EcdsaKeyGenBuilder
extends Object
implements AsymmetricKeyPairGenerator<EcdsaCurveSpec>

ECDSA Key Pair Generator

Implementation of AsymmetricKeyPairGenerator for EcdsaCurveSpec. This builder is responsible for generating new elliptic curve key pairs for use with the EcdsaAlgorithm.

The exact supported operation is generateKeyPair(EcdsaCurveSpec). Public and private import are registered separately through EcdsaPublicKeyBuilder and EcdsaPrivateKeyBuilder.

Usage

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

// Example: Generate an ECDSA P-256 key pair
EcdsaCurveSpec spec = EcdsaCurveSpec.P256;
KeyPair kp = new EcdsaKeyGenBuilder().generateKeyPair(spec);

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
EcdsaKeyGenBuilder()	Creates a stateless ECDSA key-pair generator.

Method Summary

Modifier and Type	Method	Description
KeyPair	generateKeyPair(EcdsaCurveSpec spec)	Generates a new elliptic curve key pair for the given curve specification.

Methods inherited from class Object

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

Constructor Details

EcdsaKeyGenBuilder

public EcdsaKeyGenBuilder()

Creates a stateless ECDSA key-pair generator.

Method Details

generateKeyPair

public KeyPair generateKeyPair(EcdsaCurveSpec spec)
                        throws GeneralSecurityException

Generates a new elliptic curve key pair for the given curve specification.

Internally uses the JCA KeyPairGenerator with the "EC" algorithm and initializes it with an ECGenParameterSpec corresponding to the curve name (e.g., "secp256r1").

Specified by:

generateKeyPair in interface AsymmetricKeyPairGenerator<EcdsaCurveSpec>

Parameters:

spec - the curve specification to use

Returns:

newly generated EC KeyPair

Throws:

GeneralSecurityException - if the curve is not supported by the provider