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Kotlin conversion: KeySpecBuilder

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This commit is contained in:
Paul Schaub 2023-10-09 12:43:16 +02:00
parent eaef1fe44a
commit bb17c627ce
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
2 changed files with 63 additions and 88 deletions
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pgpainless-core/src/main/java/org/pgpainless/key/generation/KeySpecBuilder.java
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// SPDX-FileCopyrightText: 2018 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.key.generation;
import java.util.Arrays;
import java.util.Date;
import java.util.LinkedHashSet;
import java.util.Set;
import javax.annotation.Nonnull;
import org.pgpainless.PGPainless;
import org.pgpainless.algorithm.AlgorithmSuite;
import org.pgpainless.algorithm.CompressionAlgorithm;
import org.pgpainless.algorithm.Feature;
import org.pgpainless.algorithm.HashAlgorithm;
import org.pgpainless.algorithm.KeyFlag;
import org.pgpainless.algorithm.SymmetricKeyAlgorithm;
import org.pgpainless.key.generation.type.KeyType;
import org.pgpainless.signature.subpackets.SelfSignatureSubpackets;
import org.pgpainless.signature.subpackets.SignatureSubpackets;
import org.pgpainless.signature.subpackets.SignatureSubpacketsUtil;
public class KeySpecBuilder implements KeySpecBuilderInterface {
private final KeyType type;
private final KeyFlag[] keyFlags;
private final SelfSignatureSubpackets hashedSubpackets = new SignatureSubpackets();
private final AlgorithmSuite algorithmSuite = PGPainless.getPolicy().getKeyGenerationAlgorithmSuite();
private Set<CompressionAlgorithm> preferredCompressionAlgorithms = algorithmSuite.getCompressionAlgorithms();
private Set<HashAlgorithm> preferredHashAlgorithms = algorithmSuite.getHashAlgorithms();
private Set<SymmetricKeyAlgorithm> preferredSymmetricAlgorithms = algorithmSuite.getSymmetricKeyAlgorithms();
private Date keyCreationDate;
KeySpecBuilder(@Nonnull KeyType type, KeyFlag... flags) {
if (flags == null) {
this.keyFlags = new KeyFlag[0];
} else {
SignatureSubpacketsUtil.assureKeyCanCarryFlags(type, flags);
this.keyFlags = flags;
}
this.type = type;
}
@Override
public KeySpecBuilder overridePreferredCompressionAlgorithms(
@Nonnull CompressionAlgorithm... compressionAlgorithms) {
this.preferredCompressionAlgorithms = new LinkedHashSet<>(Arrays.asList(compressionAlgorithms));
return this;
}
@Override
public KeySpecBuilder overridePreferredHashAlgorithms(
@Nonnull HashAlgorithm... preferredHashAlgorithms) {
this.preferredHashAlgorithms = new LinkedHashSet<>(Arrays.asList(preferredHashAlgorithms));
return this;
}
@Override
public KeySpecBuilder overridePreferredSymmetricKeyAlgorithms(
@Nonnull SymmetricKeyAlgorithm... preferredSymmetricKeyAlgorithms) {
for (SymmetricKeyAlgorithm algo : preferredSymmetricKeyAlgorithms) {
if (algo == SymmetricKeyAlgorithm.NULL) {
throw new IllegalArgumentException("NULL (unencrypted) is an invalid symmetric key algorithm preference.");
}
}
this.preferredSymmetricAlgorithms = new LinkedHashSet<>(Arrays.asList(preferredSymmetricKeyAlgorithms));
return this;
}
@Override
public KeySpecBuilder setKeyCreationDate(@Nonnull Date creationDate) {
this.keyCreationDate = creationDate;
return this;
}
@Override
public KeySpec build() {
this.hashedSubpackets.setKeyFlags(keyFlags);
this.hashedSubpackets.setPreferredCompressionAlgorithms(preferredCompressionAlgorithms);
this.hashedSubpackets.setPreferredHashAlgorithms(preferredHashAlgorithms);
this.hashedSubpackets.setPreferredSymmetricKeyAlgorithms(preferredSymmetricAlgorithms);
this.hashedSubpackets.setFeatures(Feature.MODIFICATION_DETECTION);
return new KeySpec(type, (SignatureSubpackets) hashedSubpackets, false, keyCreationDate);
}
}