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WIP: Kotlin conversion: ConsumerOptions
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5 changed files with 417 additions and 553 deletions
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// SPDX-FileCopyrightText: 2021 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.decryption_verification;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Collections;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPPublicKeyRing;
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import org.bouncycastle.openpgp.PGPPublicKeyRingCollection;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
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import org.bouncycastle.openpgp.PGPSignature;
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import org.bouncycastle.openpgp.operator.PublicKeyDataDecryptorFactory;
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import org.pgpainless.decryption_verification.cleartext_signatures.InMemoryMultiPassStrategy;
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import org.pgpainless.decryption_verification.cleartext_signatures.MultiPassStrategy;
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import org.pgpainless.key.SubkeyIdentifier;
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import org.pgpainless.key.protection.SecretKeyRingProtector;
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import org.pgpainless.signature.SignatureUtils;
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import org.pgpainless.util.Passphrase;
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import org.pgpainless.util.SessionKey;
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/**
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* Options for decryption and signature verification.
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*/
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public class ConsumerOptions {
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private boolean ignoreMDCErrors = false;
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private boolean forceNonOpenPgpData = false;
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private Date verifyNotBefore = null;
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private Date verifyNotAfter = new Date();
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private final CertificateSource certificates = new CertificateSource();
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private final Set<PGPSignature> detachedSignatures = new HashSet<>();
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private MissingPublicKeyCallback missingCertificateCallback = null;
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// Session key for decryption without passphrase/key
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private SessionKey sessionKey = null;
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private final Map<SubkeyIdentifier, PublicKeyDataDecryptorFactory> customPublicKeyDataDecryptorFactories =
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new HashMap<>();
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private final Map<PGPSecretKeyRing, SecretKeyRingProtector> decryptionKeys = new HashMap<>();
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private final Set<Passphrase> decryptionPassphrases = new HashSet<>();
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private MissingKeyPassphraseStrategy missingKeyPassphraseStrategy = MissingKeyPassphraseStrategy.INTERACTIVE;
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private MultiPassStrategy multiPassStrategy = new InMemoryMultiPassStrategy();
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public static ConsumerOptions get() {
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return new ConsumerOptions();
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}
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/**
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* Consider signatures on the message made before the given timestamp invalid.
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* Null means no limitation.
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*
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* @param timestamp timestamp
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* @return options
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*/
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public ConsumerOptions verifyNotBefore(Date timestamp) {
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this.verifyNotBefore = timestamp;
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return this;
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}
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/**
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* Return the earliest creation date on which signatures on the message are considered valid.
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* Signatures made earlier than this date are considered invalid.
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*
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* @return earliest allowed signature creation date or null
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*/
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public @Nullable Date getVerifyNotBefore() {
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return verifyNotBefore;
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}
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/**
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* Consider signatures on the message made after the given timestamp invalid.
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* Null means no limitation.
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*
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* @param timestamp timestamp
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* @return options
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*/
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public ConsumerOptions verifyNotAfter(Date timestamp) {
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this.verifyNotAfter = timestamp;
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return this;
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}
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/**
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* Return the latest possible creation date on which signatures made on the message are considered valid.
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* Signatures made later than this date are considered invalid.
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*
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* @return Latest possible creation date or null.
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*/
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public Date getVerifyNotAfter() {
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return verifyNotAfter;
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}
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/**
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* Add a certificate (public key ring) for signature verification.
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*
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* @param verificationCert certificate for signature verification
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* @return options
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*/
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public ConsumerOptions addVerificationCert(PGPPublicKeyRing verificationCert) {
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this.certificates.addCertificate(verificationCert);
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return this;
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}
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/**
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* Add a set of certificates (public key rings) for signature verification.
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*
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* @param verificationCerts certificates for signature verification
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* @return options
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*/
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public ConsumerOptions addVerificationCerts(PGPPublicKeyRingCollection verificationCerts) {
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for (PGPPublicKeyRing certificate : verificationCerts) {
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addVerificationCert(certificate);
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}
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return this;
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}
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/**
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* Add some detached signatures from the given {@link InputStream} for verification.
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*
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* @param signatureInputStream input stream of detached signatures
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* @return options
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*
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* @throws IOException in case of an IO error
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* @throws PGPException in case of an OpenPGP error
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*/
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public ConsumerOptions addVerificationOfDetachedSignatures(InputStream signatureInputStream)
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throws IOException, PGPException {
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List<PGPSignature> signatures = SignatureUtils.readSignatures(signatureInputStream);
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return addVerificationOfDetachedSignatures(signatures);
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}
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/**
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* Add some detached signatures for verification.
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*
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* @param detachedSignatures detached signatures
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* @return options
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*/
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public ConsumerOptions addVerificationOfDetachedSignatures(List<PGPSignature> detachedSignatures) {
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for (PGPSignature signature : detachedSignatures) {
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addVerificationOfDetachedSignature(signature);
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}
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return this;
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}
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/**
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* Add a detached signature for the signature verification process.
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*
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* @param detachedSignature detached signature
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* @return options
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*/
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public ConsumerOptions addVerificationOfDetachedSignature(PGPSignature detachedSignature) {
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detachedSignatures.add(detachedSignature);
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return this;
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}
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/**
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* Set a callback that's used when a certificate (public key) is missing for signature verification.
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*
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* @param callback callback
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* @return options
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*/
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public ConsumerOptions setMissingCertificateCallback(MissingPublicKeyCallback callback) {
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this.missingCertificateCallback = callback;
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return this;
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}
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/**
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* Attempt decryption using a session key.
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*
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* Note: PGPainless does not yet support decryption with session keys.
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*
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* @see <a href="https://datatracker.ietf.org/doc/html/rfc4880#section-2.1">RFC4880 on Session Keys</a>
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*
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* @param sessionKey session key
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* @return options
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*/
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public ConsumerOptions setSessionKey(@Nonnull SessionKey sessionKey) {
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this.sessionKey = sessionKey;
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return this;
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}
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/**
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* Return the session key.
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*
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* @return session key or null
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*/
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public @Nullable SessionKey getSessionKey() {
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return sessionKey;
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}
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/**
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* Add a key for message decryption.
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* The key is expected to be unencrypted.
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*
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* @param key unencrypted key
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* @return options
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*/
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public ConsumerOptions addDecryptionKey(@Nonnull PGPSecretKeyRing key) {
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return addDecryptionKey(key, SecretKeyRingProtector.unprotectedKeys());
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}
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/**
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* Add a key for message decryption. If the key is encrypted, the {@link SecretKeyRingProtector}
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* is used to decrypt it when needed.
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*
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* @param key key
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* @param keyRingProtector protector for the secret key
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* @return options
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*/
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public ConsumerOptions addDecryptionKey(@Nonnull PGPSecretKeyRing key,
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@Nonnull SecretKeyRingProtector keyRingProtector) {
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decryptionKeys.put(key, keyRingProtector);
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return this;
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}
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/**
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* Add the keys in the provided key collection for message decryption.
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*
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* @param keys key collection
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* @param keyRingProtector protector for encrypted secret keys
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* @return options
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*/
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public ConsumerOptions addDecryptionKeys(@Nonnull PGPSecretKeyRingCollection keys,
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@Nonnull SecretKeyRingProtector keyRingProtector) {
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for (PGPSecretKeyRing key : keys) {
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addDecryptionKey(key, keyRingProtector);
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}
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return this;
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}
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/**
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* Add a passphrase for message decryption.
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* This passphrase will be used to try to decrypt messages which were symmetrically encrypted for a passphrase.
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*
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* @see <a href="https://datatracker.ietf.org/doc/html/rfc4880#section-5.7">Symmetrically Encrypted Data Packet</a>
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*
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* @param passphrase passphrase
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* @return options
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*/
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public ConsumerOptions addDecryptionPassphrase(@Nonnull Passphrase passphrase) {
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decryptionPassphrases.add(passphrase);
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return this;
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}
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/**
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* Add a custom {@link PublicKeyDataDecryptorFactory} which enable decryption of messages, e.g. using
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* hardware-backed secret keys.
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* (See e.g. {@link org.pgpainless.decryption_verification.HardwareSecurity.HardwareDataDecryptorFactory}).
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*
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* @param factory decryptor factory
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* @return options
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*/
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public ConsumerOptions addCustomDecryptorFactory(@Nonnull CustomPublicKeyDataDecryptorFactory factory) {
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this.customPublicKeyDataDecryptorFactories.put(factory.getSubkeyIdentifier(), factory);
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return this;
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}
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/**
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* Return the custom {@link PublicKeyDataDecryptorFactory PublicKeyDataDecryptorFactories} that were
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* set by the user.
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* These factories can be used to decrypt session keys using a custom logic.
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*
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* @return custom decryptor factories
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*/
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Map<SubkeyIdentifier, PublicKeyDataDecryptorFactory> getCustomDecryptorFactories() {
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return new HashMap<>(customPublicKeyDataDecryptorFactories);
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}
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/**
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* Return the set of available decryption keys.
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*
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* @return decryption keys
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*/
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public @Nonnull Set<PGPSecretKeyRing> getDecryptionKeys() {
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return Collections.unmodifiableSet(decryptionKeys.keySet());
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}
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/**
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* Return the set of available message decryption passphrases.
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*
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* @return decryption passphrases
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*/
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public @Nonnull Set<Passphrase> getDecryptionPassphrases() {
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return Collections.unmodifiableSet(decryptionPassphrases);
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}
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/**
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* Return the explicitly set verification certificates.
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*
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* @deprecated use {@link #getCertificateSource()} instead.
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* @return verification certs
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*/
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@Deprecated
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public @Nonnull Set<PGPPublicKeyRing> getCertificates() {
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return certificates.getExplicitCertificates();
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}
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/**
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* Return an object holding available certificates for signature verification.
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*
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* @return certificate source
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*/
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public @Nonnull CertificateSource getCertificateSource() {
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return certificates;
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}
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/**
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* Return the callback that gets called when a certificate for signature verification is missing.
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* This method might return <pre>null</pre> if the users hasn't set a callback.
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*
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* @return missing public key callback
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*/
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public @Nullable MissingPublicKeyCallback getMissingCertificateCallback() {
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return missingCertificateCallback;
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}
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/**
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* Return the {@link SecretKeyRingProtector} for the given {@link PGPSecretKeyRing}.
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*
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* @param decryptionKeyRing secret key
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* @return protector for that particular secret key
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*/
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public @Nonnull SecretKeyRingProtector getSecretKeyProtector(PGPSecretKeyRing decryptionKeyRing) {
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return decryptionKeys.get(decryptionKeyRing);
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}
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/**
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* Return the set of detached signatures the user provided.
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*
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* @return detached signatures
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*/
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public @Nonnull Set<PGPSignature> getDetachedSignatures() {
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return Collections.unmodifiableSet(detachedSignatures);
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}
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/**
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* By default, PGPainless will require encrypted messages to make use of SEIP data packets.
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* Those are Symmetrically Encrypted Integrity Protected Data packets.
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* Symmetrically Encrypted Data Packets without integrity protection are rejected by default.
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* Furthermore, PGPainless will throw an exception if verification of the MDC error detection
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* code of the SEIP packet fails.
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*
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* Failure of MDC verification indicates a tampered ciphertext, which might be the cause of an
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* attack or data corruption.
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*
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* This method can be used to ignore MDC errors and allow PGPainless to consume encrypted data
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* without integrity protection.
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* If the flag <pre>ignoreMDCErrors</pre> is set to true, PGPainless will
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* <ul>
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* <li>not throw exceptions for SEIP packets with tampered ciphertext</li>
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* <li>not throw exceptions for SEIP packets with tampered MDC</li>
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* <li>not throw exceptions for MDCs with bad CTB</li>
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* <li>not throw exceptions for MDCs with bad length</li>
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* </ul>
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*
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* It will however still throw an exception if it encounters a SEIP packet with missing or truncated MDC
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*
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* @see <a href="https://datatracker.ietf.org/doc/html/rfc4880#section-5.13">
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* Sym. Encrypted Integrity Protected Data Packet</a>
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* @param ignoreMDCErrors true if MDC errors or missing MDCs shall be ignored, false otherwise.
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* @return options
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*/
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@Deprecated
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public ConsumerOptions setIgnoreMDCErrors(boolean ignoreMDCErrors) {
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this.ignoreMDCErrors = ignoreMDCErrors;
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return this;
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}
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/**
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* Return true, if PGPainless is ignoring MDC errors.
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*
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* @return ignore mdc errors
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*/
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boolean isIgnoreMDCErrors() {
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return ignoreMDCErrors;
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}
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/**
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* Force PGPainless to handle the data provided by the {@link InputStream} as non-OpenPGP data.
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* This workaround might come in handy if PGPainless accidentally mistakes the data for binary OpenPGP data.
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*
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* @return options
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*/
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public ConsumerOptions forceNonOpenPgpData() {
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this.forceNonOpenPgpData = true;
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return this;
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}
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/**
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* Return true, if the ciphertext should be handled as binary non-OpenPGP data.
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*
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* @return true if non-OpenPGP data is forced
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*/
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boolean isForceNonOpenPgpData() {
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return forceNonOpenPgpData;
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}
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/**
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* Specify the {@link MissingKeyPassphraseStrategy}.
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* This strategy defines, how missing passphrases for unlocking secret keys are handled.
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* In interactive mode ({@link MissingKeyPassphraseStrategy#INTERACTIVE}) PGPainless will try to obtain missing
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* passphrases for secret keys via the {@link SecretKeyRingProtector SecretKeyRingProtectors}
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* {@link org.pgpainless.key.protection.passphrase_provider.SecretKeyPassphraseProvider} callback.
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*
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* In non-interactice mode ({@link MissingKeyPassphraseStrategy#THROW_EXCEPTION}, PGPainless will instead
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* throw a {@link org.pgpainless.exception.MissingPassphraseException} containing the ids of all keys for which
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* there are missing passphrases.
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*
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* @param strategy strategy
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* @return options
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*/
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public ConsumerOptions setMissingKeyPassphraseStrategy(MissingKeyPassphraseStrategy strategy) {
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this.missingKeyPassphraseStrategy = strategy;
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return this;
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}
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/**
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* Return the currently configured {@link MissingKeyPassphraseStrategy}.
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*
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* @return missing key passphrase strategy
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*/
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MissingKeyPassphraseStrategy getMissingKeyPassphraseStrategy() {
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return missingKeyPassphraseStrategy;
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}
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/**
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* Set a custom multi-pass strategy for processing cleartext-signed messages.
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* Uses {@link InMemoryMultiPassStrategy} by default.
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*
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* @param multiPassStrategy multi-pass caching strategy
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* @return builder
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*/
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public ConsumerOptions setMultiPassStrategy(@Nonnull MultiPassStrategy multiPassStrategy) {
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this.multiPassStrategy = multiPassStrategy;
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return this;
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}
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/**
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* Return the currently configured {@link MultiPassStrategy}.
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* Defaults to {@link InMemoryMultiPassStrategy}.
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*
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* @return multi-pass strategy
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*/
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public MultiPassStrategy getMultiPassStrategy() {
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return multiPassStrategy;
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}
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/**
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* Source for OpenPGP certificates.
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* When verifying signatures on a message, this object holds available signer certificates.
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*/
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public static class CertificateSource {
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private Set<PGPPublicKeyRing> explicitCertificates = new HashSet<>();
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/**
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* Add a certificate as verification cert explicitly.
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*
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* @param certificate certificate
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*/
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public void addCertificate(PGPPublicKeyRing certificate) {
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this.explicitCertificates.add(certificate);
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}
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/**
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* Return the set of explicitly set verification certificates.
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* @return explicitly set verification certs
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*/
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public Set<PGPPublicKeyRing> getExplicitCertificates() {
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return Collections.unmodifiableSet(explicitCertificates);
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}
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/**
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* Return a certificate which contains a subkey with the given keyId.
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* This method first checks all explicitly set verification certs and if no cert is found it consults
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* the certificate stores.
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*
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* @param keyId key id
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* @return certificate
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*/
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public PGPPublicKeyRing getCertificate(long keyId) {
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for (PGPPublicKeyRing cert : explicitCertificates) {
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if (cert.getPublicKey(keyId) != null) {
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return cert;
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}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,394 @@
|
|||
// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
|
||||
//
|
||||
// SPDX-License-Identifier: Apache-2.0
|
||||
|
||||
package org.pgpainless.decryption_verification
|
||||
|
||||
import org.bouncycastle.openpgp.*
|
||||
import org.bouncycastle.openpgp.operator.PublicKeyDataDecryptorFactory
|
||||
import org.pgpainless.decryption_verification.cleartext_signatures.InMemoryMultiPassStrategy
|
||||
import org.pgpainless.decryption_verification.cleartext_signatures.MultiPassStrategy
|
||||
import org.pgpainless.key.SubkeyIdentifier
|
||||
import org.pgpainless.key.protection.SecretKeyRingProtector
|
||||
import org.pgpainless.signature.SignatureUtils
|
||||
import org.pgpainless.util.Passphrase
|
||||
import org.pgpainless.util.SessionKey
|
||||
import java.io.IOException
|
||||
import java.io.InputStream
|
||||
import java.util.*
|
||||
|
||||
/**
|
||||
* Options for decryption and signature verification.
|
||||
*/
|
||||
class ConsumerOptions {
|
||||
|
||||
private var ignoreMDCErrors = false
|
||||
private var forceNonOpenPgpData = false
|
||||
private var verifyNotBefore: Date? = null
|
||||
private var verifyNotAfter: Date? = Date()
|
||||
|
||||
private val certificates = CertificateSource()
|
||||
private val detachedSignatures = mutableSetOf<PGPSignature>()
|
||||
private var missingCertificateCallback: MissingPublicKeyCallback? = null
|
||||
|
||||
private var sessionKey: SessionKey? = null
|
||||
private val customDecryptorFactories = mutableMapOf<SubkeyIdentifier, PublicKeyDataDecryptorFactory>()
|
||||
private val decryptionKeys = mutableMapOf<PGPSecretKeyRing, SecretKeyRingProtector>()
|
||||
private val decryptionPassphrases = mutableSetOf<Passphrase>()
|
||||
private var missingKeyPassphraseStrategy = MissingKeyPassphraseStrategy.INTERACTIVE
|
||||
private var multiPassStrategy: MultiPassStrategy = InMemoryMultiPassStrategy()
|
||||
|
||||
/**
|
||||
* Consider signatures on the message made before the given timestamp invalid.
|
||||
* Null means no limitation.
|
||||
*
|
||||
* @param timestamp timestamp
|
||||
* @return options
|
||||
*/
|
||||
fun verifyNotBefore(timestamp: Date?): ConsumerOptions = apply {
|
||||
this.verifyNotBefore = timestamp
|
||||
}
|
||||
|
||||
fun getVerifyNotBefore() = verifyNotBefore
|
||||
|
||||
/**
|
||||
* Consider signatures on the message made after the given timestamp invalid.
|
||||
* Null means no limitation.
|
||||
*
|
||||
* @param timestamp timestamp
|
||||
* @return options
|
||||
*/
|
||||
fun verifyNotAfter(timestamp: Date?): ConsumerOptions = apply {
|
||||
this.verifyNotAfter = timestamp
|
||||
}
|
||||
|
||||
fun getVerifyNotAfter() = verifyNotAfter
|
||||
|
||||
/**
|
||||
* Add a certificate (public key ring) for signature verification.
|
||||
*
|
||||
* @param verificationCert certificate for signature verification
|
||||
* @return options
|
||||
*/
|
||||
fun addVerificationCert(verificationCert: PGPPublicKeyRing): ConsumerOptions = apply {
|
||||
this.certificates.addCertificate(verificationCert)
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a set of certificates (public key rings) for signature verification.
|
||||
*
|
||||
* @param verificationCerts certificates for signature verification
|
||||
* @return options
|
||||
*/
|
||||
fun addVerificationCerts(verificationCerts: PGPPublicKeyRingCollection): ConsumerOptions = apply {
|
||||
for (cert in verificationCerts) {
|
||||
addVerificationCert(cert)
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Add some detached signatures from the given [InputStream] for verification.
|
||||
*
|
||||
* @param signatureInputStream input stream of detached signatures
|
||||
* @return options
|
||||
*
|
||||
* @throws IOException in case of an IO error
|
||||
* @throws PGPException in case of an OpenPGP error
|
||||
*/
|
||||
@Throws(IOException::class, PGPException::class)
|
||||
fun addVerificationOfDetachedSignatures(signatureInputStream: InputStream): ConsumerOptions = apply {
|
||||
val signatures = SignatureUtils.readSignatures(signatureInputStream)
|
||||
addVerificationOfDetachedSignatures(signatures)
|
||||
}
|
||||
|
||||
/**
|
||||
* Add some detached signatures for verification.
|
||||
*
|
||||
* @param detachedSignatures detached signatures
|
||||
* @return options
|
||||
*/
|
||||
fun addVerificationOfDetachedSignatures(detachedSignatures: List<PGPSignature>): ConsumerOptions = apply {
|
||||
for (signature in detachedSignatures) {
|
||||
addVerificationOfDetachedSignature(signature)
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a detached signature for the signature verification process.
|
||||
*
|
||||
* @param detachedSignature detached signature
|
||||
* @return options
|
||||
*/
|
||||
fun addVerificationOfDetachedSignature(detachedSignature: PGPSignature): ConsumerOptions = apply {
|
||||
detachedSignatures.add(detachedSignature)
|
||||
}
|
||||
|
||||
fun getDetachedSignatures() = detachedSignatures.toList()
|
||||
|
||||
/**
|
||||
* Set a callback that's used when a certificate (public key) is missing for signature verification.
|
||||
*
|
||||
* @param callback callback
|
||||
* @return options
|
||||
*/
|
||||
fun setMissingCertificateCallback(callback: MissingPublicKeyCallback): ConsumerOptions = apply {
|
||||
this.missingCertificateCallback = callback
|
||||
}
|
||||
|
||||
/**
|
||||
* Attempt decryption using a session key.
|
||||
*
|
||||
* Note: PGPainless does not yet support decryption with session keys.
|
||||
*
|
||||
* See [RFC4880 on Session Keys](https://datatracker.ietf.org/doc/html/rfc4880#section-2.1)
|
||||
*
|
||||
* @param sessionKey session key
|
||||
* @return options
|
||||
*/
|
||||
fun setSessionKey(sessionKey: SessionKey) = apply { this.sessionKey = sessionKey }
|
||||
|
||||
fun getSessionKey() = sessionKey
|
||||
|
||||
/**
|
||||
* Add a key for message decryption. If the key is encrypted, the [SecretKeyRingProtector]
|
||||
* is used to decrypt it when needed.
|
||||
*
|
||||
* @param key key
|
||||
* @param keyRingProtector protector for the secret key
|
||||
* @return options
|
||||
*/
|
||||
@JvmOverloads
|
||||
fun addDecryptionKey(key: PGPSecretKeyRing,
|
||||
protector: SecretKeyRingProtector = SecretKeyRingProtector.unprotectedKeys()) = apply {
|
||||
decryptionKeys[key] = protector
|
||||
}
|
||||
|
||||
/**
|
||||
* Add the keys in the provided key collection for message decryption.
|
||||
*
|
||||
* @param keys key collection
|
||||
* @param keyRingProtector protector for encrypted secret keys
|
||||
* @return options
|
||||
*/
|
||||
@JvmOverloads
|
||||
fun addDecryptionKeys(keys: PGPSecretKeyRingCollection,
|
||||
protector: SecretKeyRingProtector = SecretKeyRingProtector.unprotectedKeys()) = apply {
|
||||
for (key in keys) {
|
||||
addDecryptionKey(key, protector)
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a passphrase for message decryption.
|
||||
* This passphrase will be used to try to decrypt messages which were symmetrically encrypted for a passphrase.
|
||||
*
|
||||
* See [Symmetrically Encrypted Data Packet](https://datatracker.ietf.org/doc/html/rfc4880#section-5.7)
|
||||
*
|
||||
* @param passphrase passphrase
|
||||
* @return options
|
||||
*/
|
||||
fun addDecryptionPassphrase(passphrase: Passphrase) = apply {
|
||||
decryptionPassphrases.add(passphrase)
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a custom [PublicKeyDataDecryptorFactory] which enable decryption of messages, e.g. using
|
||||
* hardware-backed secret keys.
|
||||
* (See e.g. [org.pgpainless.decryption_verification.HardwareSecurity.HardwareDataDecryptorFactory]).
|
||||
*
|
||||
* @param factory decryptor factory
|
||||
* @return options
|
||||
*/
|
||||
fun addCustomDecryptorFactory(factory: CustomPublicKeyDataDecryptorFactory) = apply {
|
||||
customDecryptorFactories[factory.subkeyIdentifier] = factory
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the custom [PublicKeyDataDecryptorFactory] that were
|
||||
* set by the user.
|
||||
* These factories can be used to decrypt session keys using a custom logic.
|
||||
*
|
||||
* @return custom decryptor factories
|
||||
*/
|
||||
fun getCustomDecryptorFactories() = customDecryptorFactories.toMap()
|
||||
|
||||
/**
|
||||
* Return the set of available decryption keys.
|
||||
*
|
||||
* @return decryption keys
|
||||
*/
|
||||
fun getDecryptionKeys() = decryptionKeys.keys.toSet()
|
||||
|
||||
/**
|
||||
* Return the set of available message decryption passphrases.
|
||||
*
|
||||
* @return decryption passphrases
|
||||
*/
|
||||
fun getDecryptionPassphrases() = decryptionPassphrases.toSet()
|
||||
|
||||
/**
|
||||
* Return an object holding available certificates for signature verification.
|
||||
*
|
||||
* @return certificate source
|
||||
*/
|
||||
fun getCertificateSource() = certificates
|
||||
|
||||
/**
|
||||
* Return the callback that gets called when a certificate for signature verification is missing.
|
||||
* This method might return `null` if the users hasn't set a callback.
|
||||
*
|
||||
* @return missing public key callback
|
||||
*/
|
||||
fun getMissingCertificateCallback() = missingCertificateCallback
|
||||
|
||||
/**
|
||||
* Return the [SecretKeyRingProtector] for the given [PGPSecretKeyRing].
|
||||
*
|
||||
* @param decryptionKeyRing secret key
|
||||
* @return protector for that particular secret key
|
||||
*/
|
||||
fun getSecretKeyProtector(decryptionKeyRing: PGPSecretKeyRing): SecretKeyRingProtector? {
|
||||
return decryptionKeys[decryptionKeyRing]
|
||||
}
|
||||
|
||||
/**
|
||||
* By default, PGPainless will require encrypted messages to make use of SEIP data packets.
|
||||
* Those are Symmetrically Encrypted Integrity Protected Data packets.
|
||||
* Symmetrically Encrypted Data Packets without integrity protection are rejected by default.
|
||||
* Furthermore, PGPainless will throw an exception if verification of the MDC error detection
|
||||
* code of the SEIP packet fails.
|
||||
*
|
||||
* Failure of MDC verification indicates a tampered ciphertext, which might be the cause of an
|
||||
* attack or data corruption.
|
||||
*
|
||||
* This method can be used to ignore MDC errors and allow PGPainless to consume encrypted data
|
||||
* without integrity protection.
|
||||
* If the flag <pre>ignoreMDCErrors</pre> is set to true, PGPainless will
|
||||
*
|
||||
* * not throw exceptions for SEIP packets with tampered ciphertext
|
||||
* * not throw exceptions for SEIP packets with tampered MDC
|
||||
* * not throw exceptions for MDCs with bad CTB
|
||||
* * not throw exceptions for MDCs with bad length
|
||||
*
|
||||
*
|
||||
* It will however still throw an exception if it encounters a SEIP packet with missing or truncated MDC
|
||||
*
|
||||
* See [Sym. Encrypted Integrity Protected Data Packet](https://datatracker.ietf.org/doc/html/rfc4880.section-5.13)
|
||||
*
|
||||
* @param ignoreMDCErrors true if MDC errors or missing MDCs shall be ignored, false otherwise.
|
||||
* @return options
|
||||
*/
|
||||
@Deprecated("Ignoring non-integrity-protected packets is discouraged.")
|
||||
fun setIgnoreMDCErrors(ignoreMDCErrors: Boolean): ConsumerOptions = apply { this.ignoreMDCErrors = ignoreMDCErrors }
|
||||
|
||||
fun isIgnoreMDCErrors() = ignoreMDCErrors
|
||||
|
||||
/**
|
||||
* Force PGPainless to handle the data provided by the [InputStream] as non-OpenPGP data.
|
||||
* This workaround might come in handy if PGPainless accidentally mistakes the data for binary OpenPGP data.
|
||||
*
|
||||
* @return options
|
||||
*/
|
||||
fun forceNonOpenPgpData(): ConsumerOptions = apply {
|
||||
this.forceNonOpenPgpData = true
|
||||
}
|
||||
|
||||
/**
|
||||
* Return true, if the ciphertext should be handled as binary non-OpenPGP data.
|
||||
*
|
||||
* @return true if non-OpenPGP data is forced
|
||||
*/
|
||||
fun isForceNonOpenPgpData() = forceNonOpenPgpData
|
||||
|
||||
/**
|
||||
* Specify the [MissingKeyPassphraseStrategy].
|
||||
* This strategy defines, how missing passphrases for unlocking secret keys are handled.
|
||||
* In interactive mode ([MissingKeyPassphraseStrategy.INTERACTIVE]) PGPainless will try to obtain missing
|
||||
* passphrases for secret keys via the [SecretKeyRingProtector]
|
||||
* [org.pgpainless.key.protection.passphrase_provider.SecretKeyPassphraseProvider] callback.
|
||||
*
|
||||
* In non-interactice mode ([MissingKeyPassphraseStrategy.THROW_EXCEPTION]), PGPainless will instead
|
||||
* throw a [org.pgpainless.exception.MissingPassphraseException] containing the ids of all keys for which
|
||||
* there are missing passphrases.
|
||||
*
|
||||
* @param strategy strategy
|
||||
* @return options
|
||||
*/
|
||||
fun setMissingKeyPassphraseStrategy(strategy: MissingKeyPassphraseStrategy): ConsumerOptions {
|
||||
this.missingKeyPassphraseStrategy = strategy
|
||||
return this
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the currently configured [MissingKeyPassphraseStrategy].
|
||||
*
|
||||
* @return missing key passphrase strategy
|
||||
*/
|
||||
fun getMissingKeyPassphraseStrategy(): MissingKeyPassphraseStrategy {
|
||||
return missingKeyPassphraseStrategy
|
||||
}
|
||||
|
||||
/**
|
||||
* Set a custom multi-pass strategy for processing cleartext-signed messages.
|
||||
* Uses [InMemoryMultiPassStrategy] by default.
|
||||
*
|
||||
* @param multiPassStrategy multi-pass caching strategy
|
||||
* @return builder
|
||||
*/
|
||||
fun setMultiPassStrategy(multiPassStrategy: MultiPassStrategy): ConsumerOptions {
|
||||
this.multiPassStrategy = multiPassStrategy
|
||||
return this
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the currently configured [MultiPassStrategy].
|
||||
* Defaults to [InMemoryMultiPassStrategy].
|
||||
*
|
||||
* @return multi-pass strategy
|
||||
*/
|
||||
fun getMultiPassStrategy(): MultiPassStrategy {
|
||||
return multiPassStrategy
|
||||
}
|
||||
|
||||
/**
|
||||
* Source for OpenPGP certificates.
|
||||
* When verifying signatures on a message, this object holds available signer certificates.
|
||||
*/
|
||||
class CertificateSource {
|
||||
private val explicitCertificates: MutableSet<PGPPublicKeyRing> = mutableSetOf()
|
||||
|
||||
/**
|
||||
* Add a certificate as verification cert explicitly.
|
||||
*
|
||||
* @param certificate certificate
|
||||
*/
|
||||
fun addCertificate(certificate: PGPPublicKeyRing) {
|
||||
explicitCertificates.add(certificate)
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the set of explicitly set verification certificates.
|
||||
* @return explicitly set verification certs
|
||||
*/
|
||||
fun getExplicitCertificates(): Set<PGPPublicKeyRing> {
|
||||
return explicitCertificates.toSet()
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a certificate which contains a subkey with the given keyId.
|
||||
* This method first checks all explicitly set verification certs and if no cert is found it consults
|
||||
* the certificate stores.
|
||||
*
|
||||
* @param keyId key id
|
||||
* @return certificate
|
||||
*/
|
||||
fun getCertificate(keyId: Long): PGPPublicKeyRing? {
|
||||
return explicitCertificates.firstOrNull { it.getPublicKey(keyId) != null }
|
||||
}
|
||||
}
|
||||
|
||||
companion object {
|
||||
@JvmStatic
|
||||
fun get() = ConsumerOptions()
|
||||
}
|
||||
}
|
||||
|
|
@ -53,7 +53,7 @@ class OpenPgpMessageInputStream(
|
|||
|
||||
// Add detached signatures only on the outermost OpenPgpMessageInputStream
|
||||
if (metadata is Message) {
|
||||
signatures.addDetachedSignatures(options.detachedSignatures)
|
||||
signatures.addDetachedSignatures(options.getDetachedSignatures())
|
||||
}
|
||||
|
||||
when(type) {
|
||||
|
|
@ -67,7 +67,7 @@ class OpenPgpMessageInputStream(
|
|||
}
|
||||
|
||||
Type.cleartext_signed -> {
|
||||
val multiPassStrategy = options.multiPassStrategy
|
||||
val multiPassStrategy = options.getMultiPassStrategy()
|
||||
val detachedSignatures = ClearsignedMessageUtil.detachSignaturesFromInbandClearsignedMessage(
|
||||
inputStream, multiPassStrategy.messageOutputStream)
|
||||
|
||||
|
|
@ -75,7 +75,7 @@ class OpenPgpMessageInputStream(
|
|||
signatures.addDetachedSignature(signature)
|
||||
}
|
||||
|
||||
options.forceNonOpenPgpData()
|
||||
options.isForceNonOpenPgpData()
|
||||
nestedInputStream = TeeInputStream(multiPassStrategy.messageInputStream, this.signatures)
|
||||
}
|
||||
|
||||
|
|
@ -212,7 +212,7 @@ class OpenPgpMessageInputStream(
|
|||
val encDataList = packetInputStream!!.readEncryptedDataList()
|
||||
if (!encDataList.isIntegrityProtected) {
|
||||
LOGGER.warn("Symmetrically Encrypted Data Packet is not integrity-protected.")
|
||||
if (!options.isIgnoreMDCErrors) {
|
||||
if (!options.isIgnoreMDCErrors()) {
|
||||
throw MessageNotIntegrityProtectedException()
|
||||
}
|
||||
}
|
||||
|
|
@ -223,7 +223,7 @@ class OpenPgpMessageInputStream(
|
|||
" have an anonymous recipient.")
|
||||
|
||||
// try custom decryptor factories
|
||||
for ((key, decryptorFactory) in options.customDecryptorFactories) {
|
||||
for ((key, decryptorFactory) in options.getCustomDecryptorFactories()) {
|
||||
LOGGER.debug("Attempt decryption with custom decryptor factory with key $key.")
|
||||
esks.pkesks.filter {
|
||||
// find matching PKESK
|
||||
|
|
@ -237,8 +237,8 @@ class OpenPgpMessageInputStream(
|
|||
}
|
||||
|
||||
// try provided session key
|
||||
if (options.sessionKey != null) {
|
||||
val sk = options.sessionKey!!
|
||||
if (options.getSessionKey() != null) {
|
||||
val sk = options.getSessionKey()!!
|
||||
LOGGER.debug("Attempt decryption with provided session key.")
|
||||
throwIfUnacceptable(sk.algorithm)
|
||||
|
||||
|
|
@ -260,7 +260,7 @@ class OpenPgpMessageInputStream(
|
|||
}
|
||||
|
||||
// try passwords
|
||||
for (passphrase in options.decryptionPassphrases) {
|
||||
for (passphrase in options.getDecryptionPassphrases()) {
|
||||
for (skesk in esks.skesks) {
|
||||
LOGGER.debug("Attempt decryption with provided passphrase")
|
||||
val algorithm = SymmetricKeyAlgorithm.requireFromId(skesk.algorithm)
|
||||
|
|
@ -295,7 +295,7 @@ class OpenPgpMessageInputStream(
|
|||
}
|
||||
|
||||
LOGGER.debug("Attempt decryption using secret key $decryptionKeyId")
|
||||
val protector = options.getSecretKeyProtector(decryptionKeys)
|
||||
val protector = options.getSecretKeyProtector(decryptionKeys) ?: continue
|
||||
if (!protector.hasPassphraseFor(keyId)) {
|
||||
LOGGER.debug("Missing passphrase for key $decryptionKeyId. Postponing decryption until all other keys were tried.")
|
||||
postponedDueToMissingPassphrase.add(secretKey to pkesk)
|
||||
|
|
@ -317,7 +317,7 @@ class OpenPgpMessageInputStream(
|
|||
}
|
||||
|
||||
LOGGER.debug("Attempt decryption of anonymous PKESK with key $decryptionKeyId.")
|
||||
val protector = options.getSecretKeyProtector(decryptionKeys)
|
||||
val protector = options.getSecretKeyProtector(decryptionKeys) ?: continue
|
||||
|
||||
if (!protector.hasPassphraseFor(secretKey.keyID)) {
|
||||
LOGGER.debug("Missing passphrase for key $decryptionKeyId. Postponing decryption until all other keys were tried.")
|
||||
|
|
@ -332,7 +332,7 @@ class OpenPgpMessageInputStream(
|
|||
}
|
||||
}
|
||||
|
||||
if (options.missingKeyPassphraseStrategy == MissingKeyPassphraseStrategy.THROW_EXCEPTION) {
|
||||
if (options.getMissingKeyPassphraseStrategy() == MissingKeyPassphraseStrategy.THROW_EXCEPTION) {
|
||||
// Non-interactive mode: Throw an exception with all locked decryption keys
|
||||
postponedDueToMissingPassphrase.map {
|
||||
SubkeyIdentifier(getDecryptionKey(it.first.keyID)!!, it.first.keyID)
|
||||
|
|
@ -340,7 +340,7 @@ class OpenPgpMessageInputStream(
|
|||
if (it.isNotEmpty())
|
||||
throw MissingPassphraseException(it.toSet())
|
||||
}
|
||||
} else if (options.missingKeyPassphraseStrategy == MissingKeyPassphraseStrategy.INTERACTIVE) {
|
||||
} else if (options.getMissingKeyPassphraseStrategy() == MissingKeyPassphraseStrategy.INTERACTIVE) {
|
||||
for ((secretKey, pkesk) in postponedDueToMissingPassphrase) {
|
||||
val keyId = secretKey.keyID
|
||||
val decryptionKeys = getDecryptionKey(keyId)!!
|
||||
|
|
@ -532,7 +532,7 @@ class OpenPgpMessageInputStream(
|
|||
return MessageMetadata((metadata as Message))
|
||||
}
|
||||
|
||||
private fun getDecryptionKey(keyId: Long): PGPSecretKeyRing? = options.decryptionKeys.firstOrNull {
|
||||
private fun getDecryptionKey(keyId: Long): PGPSecretKeyRing? = options.getDecryptionKeys().firstOrNull {
|
||||
it.any {
|
||||
k -> k.keyID == keyId
|
||||
}.and(PGPainless.inspectKeyRing(it).decryptionSubkeys.any {
|
||||
|
|
@ -543,7 +543,7 @@ class OpenPgpMessageInputStream(
|
|||
private fun findPotentialDecryptionKeys(pkesk: PGPPublicKeyEncryptedData): List<Pair<PGPSecretKeyRing, PGPSecretKey>> {
|
||||
val algorithm = pkesk.algorithm
|
||||
val candidates = mutableListOf<Pair<PGPSecretKeyRing, PGPSecretKey>>()
|
||||
options.decryptionKeys.forEach {
|
||||
options.getDecryptionKeys().forEach {
|
||||
val info = PGPainless.inspectKeyRing(it)
|
||||
for (key in info.decryptionSubkeys) {
|
||||
if (key.algorithm == algorithm && info.isSecretKeyAvailable(key.keyID)) {
|
||||
|
|
@ -679,7 +679,7 @@ class OpenPgpMessageInputStream(
|
|||
SubkeyIdentifier(check.verificationKeys, check.onePassSignature.keyID))
|
||||
|
||||
try {
|
||||
SignatureValidator.signatureWasCreatedInBounds(options.verifyNotBefore, options.verifyNotAfter)
|
||||
SignatureValidator.signatureWasCreatedInBounds(options.getVerifyNotBefore(), options.getVerifyNotAfter())
|
||||
.verify(signature)
|
||||
CertificateValidator.validateCertificateAndVerifyOnePassSignature(check, policy)
|
||||
LOGGER.debug("Acceptable signature by key ${verification.signingKey}")
|
||||
|
|
@ -713,13 +713,13 @@ class OpenPgpMessageInputStream(
|
|||
}
|
||||
|
||||
fun findCertificate(keyId: Long): PGPPublicKeyRing? {
|
||||
val cert = options.certificateSource.getCertificate(keyId)
|
||||
val cert = options.getCertificateSource().getCertificate(keyId)
|
||||
if (cert != null) {
|
||||
return cert
|
||||
}
|
||||
|
||||
if (options.missingCertificateCallback != null) {
|
||||
return options.missingCertificateCallback!!.onMissingPublicKeyEncountered(keyId)
|
||||
if (options.getMissingCertificateCallback() != null) {
|
||||
return options.getMissingCertificateCallback()!!.onMissingPublicKeyEncountered(keyId)
|
||||
}
|
||||
return null // TODO: Missing cert for sig
|
||||
}
|
||||
|
|
@ -772,7 +772,7 @@ class OpenPgpMessageInputStream(
|
|||
for (detached in detachedSignatures) {
|
||||
val verification = SignatureVerification(detached.signature, detached.signingKeyIdentifier)
|
||||
try {
|
||||
SignatureValidator.signatureWasCreatedInBounds(options.verifyNotBefore, options.verifyNotAfter)
|
||||
SignatureValidator.signatureWasCreatedInBounds(options.getVerifyNotBefore(), options.getVerifyNotAfter())
|
||||
.verify(detached.signature)
|
||||
CertificateValidator.validateCertificateAndVerifyInitializedSignature(
|
||||
detached.signature, KeyRingUtils.publicKeys(detached.signingKeyRing), policy)
|
||||
|
|
@ -787,7 +787,7 @@ class OpenPgpMessageInputStream(
|
|||
for (prepended in prependedSignatures) {
|
||||
val verification = SignatureVerification(prepended.signature, prepended.signingKeyIdentifier)
|
||||
try {
|
||||
SignatureValidator.signatureWasCreatedInBounds(options.verifyNotBefore, options.verifyNotAfter)
|
||||
SignatureValidator.signatureWasCreatedInBounds(options.getVerifyNotBefore(), options.getVerifyNotAfter())
|
||||
.verify(prepended.signature)
|
||||
CertificateValidator.validateCertificateAndVerifyInitializedSignature(
|
||||
prepended.signature, KeyRingUtils.publicKeys(prepended.signingKeyRing), policy)
|
||||
|
|
@ -877,7 +877,7 @@ class OpenPgpMessageInputStream(
|
|||
val openPgpIn = OpenPgpInputStream(inputStream)
|
||||
openPgpIn.reset()
|
||||
|
||||
if (openPgpIn.isNonOpenPgp || options.isForceNonOpenPgpData) {
|
||||
if (openPgpIn.isNonOpenPgp || options.isForceNonOpenPgpData()) {
|
||||
return OpenPgpMessageInputStream(Type.non_openpgp, openPgpIn, options, metadata, policy)
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -14,6 +14,7 @@ import org.pgpainless.key.OpenPgpFingerprint
|
|||
import org.pgpainless.key.util.RevocationAttributes.Reason
|
||||
import org.pgpainless.signature.subpackets.SignatureSubpacketsUtil
|
||||
import org.pgpainless.util.ArmorUtils
|
||||
import java.io.IOException
|
||||
import java.io.InputStream
|
||||
import java.util.*
|
||||
|
||||
|
|
@ -127,6 +128,7 @@ class SignatureUtils {
|
|||
}
|
||||
|
||||
@JvmStatic
|
||||
@Throws(IOException::class, PGPException::class)
|
||||
fun readSignatures(inputStream: InputStream): List<PGPSignature> {
|
||||
return readSignatures(inputStream, MAX_ITERATIONS)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,7 +7,6 @@ package org.pgpainless.decryption_verification;
|
|||
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
|
||||
import static org.junit.jupiter.api.Assertions.assertEquals;
|
||||
import static org.junit.jupiter.api.Assertions.assertFalse;
|
||||
import static org.junit.jupiter.api.Assertions.assertThrows;
|
||||
import static org.junit.jupiter.api.Assertions.assertTrue;
|
||||
import static org.junit.jupiter.api.Assertions.fail;
|
||||
|
||||
|
|
@ -59,29 +58,6 @@ public class MissingPassphraseForDecryptionTest {
|
|||
message = out.toByteArray();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void invalidPostponedKeysStrategyTest() {
|
||||
SecretKeyPassphraseProvider callback = new SecretKeyPassphraseProvider() {
|
||||
@Override
|
||||
public Passphrase getPassphraseFor(Long keyId) {
|
||||
fail("MUST NOT get called in if postponed key strategy is invalid.");
|
||||
return null;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean hasPassphrase(Long keyId) {
|
||||
return true;
|
||||
}
|
||||
};
|
||||
ConsumerOptions options = new ConsumerOptions()
|
||||
.setMissingKeyPassphraseStrategy(null) // illegal
|
||||
.addDecryptionKey(secretKeys, SecretKeyRingProtector.defaultSecretKeyRingProtector(callback));
|
||||
|
||||
assertThrows(IllegalStateException.class, () -> PGPainless.decryptAndOrVerify()
|
||||
.onInputStream(new ByteArrayInputStream(message))
|
||||
.withOptions(options));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void interactiveStrategy() throws PGPException, IOException {
|
||||
// interactive callback
|
||||
|
|
|
|||
Loading…
Reference in a new issue