001// SPDX-FileCopyrightText: 2020 Paul Schaub <vanitasvitae@fsfe.org>
002//
003// SPDX-License-Identifier: Apache-2.0
004
005package org.pgpainless.key.generation.type.eddsa;
006
007import java.security.spec.AlgorithmParameterSpec;
008
009import org.bouncycastle.jce.spec.ECNamedCurveGenParameterSpec;
010import org.pgpainless.algorithm.PublicKeyAlgorithm;
011import org.pgpainless.key.generation.type.KeyType;
012
013/**
014 * Edwards-curve Digital Signature Algorithm (EdDSA).
015 */
016public final class EdDSA implements KeyType {
017
018    private final EdDSACurve curve;
019
020    private EdDSA(EdDSACurve curve) {
021        this.curve = curve;
022    }
023
024    public static EdDSA fromCurve(EdDSACurve curve) {
025        return new EdDSA(curve);
026    }
027
028    @Override
029    public String getName() {
030        return "EdDSA";
031    }
032
033    @Override
034    public PublicKeyAlgorithm getAlgorithm() {
035        return PublicKeyAlgorithm.EDDSA;
036    }
037
038    @Override
039    public int getBitStrength() {
040        return curve.getBitStrength();
041    }
042
043    @Override
044    public AlgorithmParameterSpec getAlgorithmSpec() {
045        return new ECNamedCurveGenParameterSpec(curve.getName());
046    }
047
048}