001// SPDX-FileCopyrightText: 2018 Paul Schaub <vanitasvitae@fsfe.org>
002//
003// SPDX-License-Identifier: Apache-2.0
004
005package org.pgpainless.key.generation.type.rsa;
006
007import javax.annotation.Nonnull;
008import java.security.spec.AlgorithmParameterSpec;
009import java.security.spec.RSAKeyGenParameterSpec;
010
011import org.pgpainless.algorithm.PublicKeyAlgorithm;
012import org.pgpainless.key.generation.type.KeyType;
013
014/**
015 * Key type that specifies the RSA_GENERAL algorithm.
016 */
017public class RSA implements KeyType {
018
019    private final RsaLength length;
020
021    RSA(@Nonnull RsaLength length) {
022        this.length = length;
023    }
024
025    public static RSA withLength(@Nonnull RsaLength length) {
026        return new RSA(length);
027    }
028
029    @Override
030    public String getName() {
031        return "RSA";
032    }
033
034    @Override
035    public PublicKeyAlgorithm getAlgorithm() {
036        return PublicKeyAlgorithm.RSA_GENERAL;
037    }
038
039    @Override
040    public int getBitStrength() {
041        return length.getLength();
042    }
043
044    @Override
045    public AlgorithmParameterSpec getAlgorithmSpec() {
046        return new RSAKeyGenParameterSpec(length.getLength(), RSAKeyGenParameterSpec.F4);
047    }
048}