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Code Issues Releases Wiki Activity

Improve SignatureUtils.wasIssuedBy() by adding support for v5 fingerprints

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This commit is contained in:
Paul Schaub 2022-05-18 14:21:22 +02:00
parent 9921fc6ff6
commit 70a861611c
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
1 changed files with 10 additions and 12 deletions
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22
pgpainless-core/src/main/java/org/pgpainless/signature/SignatureUtils.java
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@ -14,6 +14,7 @@ import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.annotation.Nonnull;
import org.bouncycastle.bcpg.sig.IssuerKeyID;
import org.bouncycastle.bcpg.sig.KeyExpirationTime;
@ -36,14 +37,11 @@ import org.pgpainless.algorithm.SignatureType;
import org.pgpainless.algorithm.negotiation.HashAlgorithmNegotiator;
import org.pgpainless.implementation.ImplementationFactory;
import org.pgpainless.key.OpenPgpFingerprint;
import org.pgpainless.key.OpenPgpV4Fingerprint;
import org.pgpainless.key.util.OpenPgpKeyAttributeUtil;
import org.pgpainless.key.util.RevocationAttributes;
import org.pgpainless.signature.subpackets.SignatureSubpacketsUtil;
import org.pgpainless.util.ArmorUtils;
import javax.annotation.Nonnull;
/**
* Utility methods related to signatures.
*/
@ -325,17 +323,17 @@ public final class SignatureUtils {
}
public static boolean wasIssuedBy(byte[] fingerprint, PGPSignature signature) {
if (fingerprint.length != 20) {
try {
OpenPgpFingerprint fp = OpenPgpFingerprint.parseFromBinary(fingerprint);
OpenPgpFingerprint issuerFp = SignatureSubpacketsUtil.getIssuerFingerprintAsOpenPgpFingerprint(signature);
if (issuerFp == null) {
return fp.getKeyId() == signature.getKeyID();
}
return fp.equals(issuerFp);
} catch (IllegalArgumentException e) {
// Unknown fingerprint length
return false;
}
OpenPgpV4Fingerprint fp = new OpenPgpV4Fingerprint(fingerprint);
OpenPgpFingerprint issuerFp = SignatureSubpacketsUtil.getIssuerFingerprintAsOpenPgpFingerprint(signature);
if (issuerFp == null) {
return fp.getKeyId() == signature.getKeyID();
}
return fp.equals(issuerFp);
}
/**
@ -354,7 +352,7 @@ public final class SignatureUtils {
List<PGPSignature> signaturesByKeyId = new ArrayList<>();
Iterator<PGPSignature> userIdSignatures = key.getSignaturesForID(userId);
// getSignaturesForID() is nullable -.-
// getSignaturesForID() is nullable for some reason -.-
if (userIdSignatures == null) {
return signaturesByKeyId;
}