Package zeroecho.core.alg.ed448

Class Ed448Algorithm

java.lang.Object

zeroecho.core.CryptoAlgorithm

zeroecho.core.alg.AbstractCryptoAlgorithm

zeroecho.core.alg.ed448.Ed448Algorithm

public final class Ed448Algorithm
extends AbstractCryptoAlgorithm

Ed448 Digital Signature Algorithm

Implementation of the Edwards-curve Digital Signature Algorithm over the Curve448 curve, commonly referred to as Ed448.

Ed448 is a modern elliptic curve signature scheme standardized in RFC 8032. It provides high security margins (224-bit classical strength) and is designed for simplicity, determinism, and resilience against common implementation pitfalls such as malleability.

Roles

• KeyUsage.SIGN: Contexts that sign messages using a private key, producing fixed-length Ed448 signatures.
• KeyUsage.VERIFY: Contexts that verify Ed448 signatures using the corresponding public key.

Key material

• Ed448KeyGenSpec: Generation of new key pairs with defined parameters.
• Ed448PublicKeySpec: Encoded form of Ed448 public keys (X.509 format).
• Ed448PrivateKeySpec: Encoded form of Ed448 private keys (PKCS#8 format).

Thread-safety

Instances of this class are immutable and safe to reuse across threads. Context objects created through capabilities are not necessarily thread-safe.

 // Example: generate a key pair and sign data
 CryptoAlgorithm ed448 = new Ed448Algorithm();
 KeyPair kp = ed448.generateKeyPair(Ed448KeyGenSpec.defaultSpec());

 SignatureContext signer = ed448.create(KeyUsage.SIGN, kp.getPrivate(), null);
 byte[] sig = signer.sign(data);

 SignatureContext verifier = ed448.create(KeyUsage.VERIFY, kp.getPublic(), null);
 boolean ok = verifier.verify(data, sig);
 

Since:

1.0

Nested Class Summary

Nested classes/interfaces inherited from class zeroecho.core.CryptoAlgorithm

CryptoAlgorithm.AsymBuilderInfo, CryptoAlgorithm.SymBuilderInfo

Constructor Summary

Constructors

Constructor	Description
Ed448Algorithm()	Constructs and wires the Ed448 algorithm definition.

Method Summary

Methods inherited from class zeroecho.core.alg.AbstractCryptoAlgorithm

capability

Methods inherited from class zeroecho.core.CryptoAlgorithm

addCapability, asymmetricBuildersInfo, asymmetricKeyBuilder, bind, create, displayName, generateKeyPair, generateKeyPair, generateSecret, id, importPrivate, importPublic, importSecret, listCapabilities, priority, providerName, registerAsymmetricKeyBuilder, registerSymmetricKeyBuilder, roles, supports, symmetricBuildersInfo, symmetricKeyBuilder

Methods inherited from class java.lang.Object

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

Constructor Details

Ed448Algorithm

public Ed448Algorithm()

Constructs and wires the Ed448 algorithm definition.

The constructor registers:

• Roles:
  • KeyUsage.SIGN using SignatureContext with a PrivateKey and VoidSpec (no additional parameters).
  • KeyUsage.VERIFY using SignatureContext with a PublicKey and VoidSpec.
• Asymmetric key builders:
  • Ed448KeyGenSpec via Ed448KeyGenBuilder, defaulting to Ed448KeyGenSpec.defaultSpec().
  • Ed448PublicKeySpec via Ed448PublicKeyBuilder.
  • Ed448PrivateKeySpec via Ed448PrivateKeyBuilder.

No exceptions are thrown by this constructor. Any provider initialization needed for signing or verification is deferred to the creation of SignatureContext instances.

 // Example: instantiate and obtain a signer
 CryptoAlgorithm ed448 = new Ed448Algorithm();
 SignatureContext signer = ed448.create(KeyUsage.SIGN, privateKey, null);