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Kotlin conversion: PGPainless
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62BEE9264BF17311
2 changed files with 171 additions and 238 deletions
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// SPDX-FileCopyrightText: 2018 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.Date;
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import javax.annotation.Nonnull;
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import org.bouncycastle.bcpg.ArmoredOutputStream;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPKeyRing;
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import org.bouncycastle.openpgp.PGPPublicKeyRing;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.bouncycastle.openpgp.PGPSignature;
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import org.pgpainless.decryption_verification.DecryptionBuilder;
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import org.pgpainless.decryption_verification.DecryptionStream;
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import org.pgpainless.encryption_signing.EncryptionBuilder;
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import org.pgpainless.encryption_signing.EncryptionStream;
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import org.pgpainless.key.certification.CertifyCertificate;
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import org.pgpainless.key.generation.KeyRingBuilder;
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import org.pgpainless.key.generation.KeyRingTemplates;
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import org.pgpainless.key.info.KeyRingInfo;
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import org.pgpainless.key.modification.secretkeyring.SecretKeyRingEditor;
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import org.pgpainless.key.modification.secretkeyring.SecretKeyRingEditorInterface;
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import org.pgpainless.key.parsing.KeyRingReader;
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import org.pgpainless.key.util.KeyRingUtils;
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import org.pgpainless.policy.Policy;
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import org.pgpainless.util.ArmorUtils;
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public final class PGPainless {
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private PGPainless() {
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}
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/**
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* Generate a fresh OpenPGP key ring from predefined templates.
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* @return templates
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*/
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@Nonnull
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public static KeyRingTemplates generateKeyRing() {
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return new KeyRingTemplates();
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}
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/**
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* Build a custom OpenPGP key ring.
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*
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* @return builder
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*/
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@Nonnull
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public static KeyRingBuilder buildKeyRing() {
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return new KeyRingBuilder();
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}
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/**
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* Read an existing OpenPGP key ring.
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* @return builder
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*/
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@Nonnull
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public static KeyRingReader readKeyRing() {
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return new KeyRingReader();
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}
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/**
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* Extract a public key certificate from a secret key.
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*
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* @param secretKey secret key
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* @return public key certificate
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*/
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@Nonnull
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public static PGPPublicKeyRing extractCertificate(@Nonnull PGPSecretKeyRing secretKey) {
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return KeyRingUtils.publicKeyRingFrom(secretKey);
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}
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/**
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* Merge two copies of the same certificate (e.g. an old copy, and one retrieved from a key server) together.
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*
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* @param originalCopy local, older copy of the cert
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* @param updatedCopy updated, newer copy of the cert
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* @return merged certificate
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* @throws PGPException in case of an error
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*/
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@Nonnull
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public static PGPPublicKeyRing mergeCertificate(
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@Nonnull PGPPublicKeyRing originalCopy,
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@Nonnull PGPPublicKeyRing updatedCopy)
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throws PGPException {
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return PGPPublicKeyRing.join(originalCopy, updatedCopy);
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}
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/**
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* Wrap a key or certificate in ASCII armor.
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*
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* @param key key or certificate
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* @return ascii armored string
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*
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* @throws IOException in case of an error in the {@link ArmoredOutputStream}
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*/
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@Nonnull
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public static String asciiArmor(@Nonnull PGPKeyRing key)
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throws IOException {
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if (key instanceof PGPSecretKeyRing) {
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return ArmorUtils.toAsciiArmoredString((PGPSecretKeyRing) key);
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} else {
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return ArmorUtils.toAsciiArmoredString((PGPPublicKeyRing) key);
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}
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}
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/**
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* Wrap the detached signature in ASCII armor.
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*
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* @param signature detached signature
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* @return ascii armored string
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*
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* @throws IOException in case of an error in the {@link ArmoredOutputStream}
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*/
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@Nonnull
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public static String asciiArmor(@Nonnull PGPSignature signature)
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throws IOException {
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return ArmorUtils.toAsciiArmoredString(signature);
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}
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/**
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* Wrap a key of certificate in ASCII armor and write the result into the given {@link OutputStream}.
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*
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* @param key key or certificate
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* @param outputStream output stream
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*
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* @throws IOException in case of an error ion the {@link ArmoredOutputStream}
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*/
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public static void asciiArmor(@Nonnull PGPKeyRing key, @Nonnull OutputStream outputStream)
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throws IOException {
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ArmoredOutputStream armorOut = ArmorUtils.toAsciiArmoredStream(key, outputStream);
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key.encode(armorOut);
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armorOut.close();
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}
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/**
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* Create an {@link EncryptionStream}, which can be used to encrypt and/or sign data using OpenPGP.
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*
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* @return builder
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*/
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@Nonnull
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public static EncryptionBuilder encryptAndOrSign() {
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return new EncryptionBuilder();
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}
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/**
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* Create a {@link DecryptionStream}, which can be used to decrypt and/or verify data using OpenPGP.
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*
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* @return builder
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*/
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@Nonnull
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public static DecryptionBuilder decryptAndOrVerify() {
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return new DecryptionBuilder();
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}
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/**
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* Make changes to a secret key.
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* This method can be used to change key expiration dates and passphrases, or add/revoke subkeys.
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* <p>
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* After making the desired changes in the builder, the modified key ring can be extracted using {@link SecretKeyRingEditorInterface#done()}.
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*
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* @param secretKeys secret key ring
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* @return builder
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*/
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@Nonnull
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public static SecretKeyRingEditorInterface modifyKeyRing(@Nonnull PGPSecretKeyRing secretKeys) {
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return modifyKeyRing(secretKeys, new Date());
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}
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/**
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* Make changes to a secret key at the given reference time.
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* This method can be used to change key expiration dates and passphrases, or add/revoke user-ids and subkeys.
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* <p>
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* After making the desired changes in the builder, the modified key can be extracted using {@link SecretKeyRingEditorInterface#done()}.
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*
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* @param secretKeys secret key ring
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* @param referenceTime reference time used as signature creation date
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* @return builder
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*/
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@Nonnull
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public static SecretKeyRingEditorInterface modifyKeyRing(@Nonnull PGPSecretKeyRing secretKeys,
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@Nonnull Date referenceTime) {
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return new SecretKeyRingEditor(secretKeys, referenceTime);
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}
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/**
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* Quickly access information about a {@link org.bouncycastle.openpgp.PGPPublicKeyRing} / {@link PGPSecretKeyRing}.
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* This method can be used to determine expiration dates, key flags and other information about a key.
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* <p>
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* To evaluate a key at a given date (e.g. to determine if the key was allowed to create a certain signature)
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* use {@link #inspectKeyRing(PGPKeyRing, Date)} instead.
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*
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* @param keyRing key ring
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* @return access object
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*/
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@Nonnull
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public static KeyRingInfo inspectKeyRing(@Nonnull PGPKeyRing keyRing) {
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return new KeyRingInfo(keyRing);
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}
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/**
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* Quickly access information about a {@link org.bouncycastle.openpgp.PGPPublicKeyRing} / {@link PGPSecretKeyRing}.
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* This method can be used to determine expiration dates, key flags and other information about a key at a specific time.
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*
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* @param keyRing key ring
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* @param referenceTime date of inspection
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* @return access object
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*/
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@Nonnull
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public static KeyRingInfo inspectKeyRing(@Nonnull PGPKeyRing keyRing, @Nonnull Date referenceTime) {
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return new KeyRingInfo(keyRing, referenceTime);
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}
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/**
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* Access, and make changes to PGPainless policy on acceptable/default algorithms etc.
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*
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* @return policy
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*/
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@Nonnull
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public static Policy getPolicy() {
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return Policy.getInstance();
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}
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/**
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* Create different kinds of signatures on other keys.
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*
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* @return builder
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*/
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@Nonnull
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public static CertifyCertificate certify() {
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return new CertifyCertificate();
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}
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}
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171
pgpainless-core/src/main/java/org/pgpainless/PGPainless.kt
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171
pgpainless-core/src/main/java/org/pgpainless/PGPainless.kt
Normal file
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@ -0,0 +1,171 @@
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package org.pgpainless
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import org.bouncycastle.openpgp.PGPKeyRing
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import org.bouncycastle.openpgp.PGPPublicKeyRing
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import org.bouncycastle.openpgp.PGPSecretKeyRing
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import org.bouncycastle.openpgp.PGPSignature
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import org.pgpainless.decryption_verification.DecryptionBuilder
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import org.pgpainless.encryption_signing.EncryptionBuilder
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import org.pgpainless.key.certification.CertifyCertificate
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import org.pgpainless.key.generation.KeyRingBuilder
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import org.pgpainless.key.generation.KeyRingTemplates
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import org.pgpainless.key.info.KeyRingInfo
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import org.pgpainless.key.modification.secretkeyring.SecretKeyRingEditor
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import org.pgpainless.key.parsing.KeyRingReader
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import org.pgpainless.key.util.KeyRingUtils
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import org.pgpainless.policy.Policy
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import org.pgpainless.util.ArmorUtils
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import java.io.OutputStream
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import java.util.*
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class PGPainless private constructor() {
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companion object {
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/**
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* Generate a fresh OpenPGP key ring from predefined templates.
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* @return templates
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*/
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@JvmStatic
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fun generateKeyRing() = KeyRingTemplates()
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/**
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* Build a custom OpenPGP key ring.
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*
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* @return builder
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*/
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@JvmStatic
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fun buildKeyRing() = KeyRingBuilder()
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/**
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* Read an existing OpenPGP key ring.
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* @return builder
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*/
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@JvmStatic
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fun readKeyRing() = KeyRingReader()
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/**
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* Extract a public key certificate from a secret key.
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*
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* @param secretKey secret key
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* @return public key certificate
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*/
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@JvmStatic
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fun extractCertificate(secretKey: PGPSecretKeyRing) =
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KeyRingUtils.publicKeyRingFrom(secretKey)
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/**
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* Merge two copies of the same certificate (e.g. an old copy, and one retrieved from a key server) together.
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*
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* @param originalCopy local, older copy of the cert
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* @param updatedCopy updated, newer copy of the cert
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* @return merged certificate
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* @throws PGPException in case of an error
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*/
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@JvmStatic
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fun mergeCertificate(originalCopy: PGPPublicKeyRing,
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updatedCopy: PGPPublicKeyRing) =
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PGPPublicKeyRing.join(originalCopy, updatedCopy)
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/**
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* Wrap a key or certificate in ASCII armor.
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*
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* @param key key or certificate
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* @return ascii armored string
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*
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* @throws IOException in case of an error during the armoring process
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*/
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@JvmStatic
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fun asciiArmor(key: PGPKeyRing) =
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if (key is PGPSecretKeyRing)
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ArmorUtils.toAsciiArmoredString(key)
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else
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ArmorUtils.toAsciiArmoredString(key as PGPPublicKeyRing)
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/**
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* Wrap a key of certificate in ASCII armor and write the result into the given [OutputStream].
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*
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* @param key key or certificate
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* @param outputStream output stream
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*
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* @throws IOException in case of an error during the armoring process
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*/
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@JvmStatic
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fun asciiArmor(key: PGPKeyRing, outputStream: OutputStream) {
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val armorOut = ArmorUtils.toAsciiArmoredStream(key, outputStream)
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key.encode(armorOut)
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armorOut.close()
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}
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/**
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* Wrap the detached signature in ASCII armor.
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*
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* @param signature detached signature
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* @return ascii armored string
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*
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* @throws IOException in case of an error during the armoring process
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*/
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@JvmStatic
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fun asciiArmor(signature: PGPSignature) = ArmorUtils.toAsciiArmoredString(signature)
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/**
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* Create an [EncryptionBuilder], which can be used to encrypt and/or sign data using OpenPGP.
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*
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* @return builder
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*/
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@JvmStatic
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fun encryptAndOrSign() = EncryptionBuilder()
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/**
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* Create a [DecryptionBuilder], which can be used to decrypt and/or verify data using OpenPGP.
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*
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* @return builder
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*/
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@JvmStatic
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fun decryptAndOrVerify() = DecryptionBuilder()
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/**
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* Make changes to a secret key at the given reference time.
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* This method can be used to change key expiration dates and passphrases, or add/revoke user-ids and subkeys.
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* <p>
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* After making the desired changes in the builder, the modified key can be extracted using {@link SecretKeyRingEditorInterface#done()}.
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*
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* @param secretKeys secret key ring
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* @param referenceTime reference time used as signature creation date
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* @return builder
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*/
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@JvmStatic
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@JvmOverloads
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fun modifyKeyRing(secretKey: PGPSecretKeyRing, referenceTime: Date = Date()) =
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SecretKeyRingEditor(secretKey, referenceTime)
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/**
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* Quickly access information about a [org.bouncycastle.openpgp.PGPPublicKeyRing] / [PGPSecretKeyRing].
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* This method can be used to determine expiration dates, key flags and other information about a key at a specific time.
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*
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* @param keyRing key ring
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* @param referenceTime date of inspection
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* @return access object
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*/
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@JvmStatic
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@JvmOverloads
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fun inspectKeyRing(key: PGPKeyRing, referenceTime: Date = Date()) =
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KeyRingInfo(key, referenceTime)
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/**
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* Access, and make changes to PGPainless policy on acceptable/default algorithms etc.
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*
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* @return policy
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*/
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@JvmStatic
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fun getPolicy() = Policy.getInstance()
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/**
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* Create different kinds of signatures on other keys.
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*
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* @return builder
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*/
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@JvmStatic
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fun certify() = CertifyCertificate()
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}
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}
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