diff --git a/src/main/java/org/pgpainless/pgpainless/decryption_verification/DecryptionStreamFactory.java b/src/main/java/org/pgpainless/pgpainless/decryption_verification/DecryptionStreamFactory.java
index f89d5573..56f04549 100644
--- a/src/main/java/org/pgpainless/pgpainless/decryption_verification/DecryptionStreamFactory.java
+++ b/src/main/java/org/pgpainless/pgpainless/decryption_verification/DecryptionStreamFactory.java
@@ -48,6 +48,7 @@ import org.bouncycastle.openpgp.operator.bc.BcPGPContentVerifierBuilderProvider;
 import org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory;
 import org.pgpainless.pgpainless.algorithm.CompressionAlgorithm;
 import org.pgpainless.pgpainless.algorithm.SymmetricKeyAlgorithm;
+import org.pgpainless.pgpainless.key.OpenPgpV4Fingerprint;
 import org.pgpainless.pgpainless.key.protection.SecretKeyRingProtector;
 
 public final class DecryptionStreamFactory {
@@ -63,7 +64,7 @@ public final class DecryptionStreamFactory {
     private final PainlessResult.Builder resultBuilder = PainlessResult.getBuilder();
     private final PGPContentVerifierBuilderProvider verifierBuilderProvider = new BcPGPContentVerifierBuilderProvider();
     private final KeyFingerPrintCalculator fingerCalc = new BcKeyFingerprintCalculator();
-    private final Map<Long, PGPOnePassSignature> verifiableOnePassSignatures = new HashMap<>();
+    private final Map<OpenPgpV4Fingerprint, PGPOnePassSignature> verifiableOnePassSignatures = new HashMap<>();
 
     private DecryptionStreamFactory(PGPSecretKeyRingCollection decryptionKeys,
                                     SecretKeyRingProtector decryptor,
@@ -162,7 +163,7 @@ public final class DecryptionStreamFactory {
                 LOGGER.log(LEVEL, "Found respective secret key " + Long.toHexString(keyId));
                 encryptedSessionKey = encryptedData;
                 decryptionKey = secretKey.extractPrivateKey(decryptionKeyDecryptor.getDecryptor(keyId));
-                resultBuilder.setDecryptionKeyId(keyId);
+                resultBuilder.setDecryptionFingerprint(new OpenPgpV4Fingerprint(secretKey));
             }
         }
 
@@ -198,7 +199,7 @@ public final class DecryptionStreamFactory {
         while (iterator.hasNext()) {
             PGPOnePassSignature signature = iterator.next();
             final long keyId = signature.getKeyID();
-            resultBuilder.addSignatureKeyId(keyId);
+            resultBuilder.addUnverifiedSignatureKeyId(keyId);
 
             LOGGER.log(LEVEL, "Message contains OnePassSignature from " + Long.toHexString(keyId));
 
@@ -236,7 +237,7 @@ public final class DecryptionStreamFactory {
             }
 
             signature.init(verifierBuilderProvider, verificationKey);
-            verifiableOnePassSignatures.put(keyId, signature);
+            verifiableOnePassSignatures.put(new OpenPgpV4Fingerprint(verificationKey), signature);
         }
     }
 }
diff --git a/src/main/java/org/pgpainless/pgpainless/decryption_verification/PainlessResult.java b/src/main/java/org/pgpainless/pgpainless/decryption_verification/PainlessResult.java
index 9fce0d8f..997550cd 100644
--- a/src/main/java/org/pgpainless/pgpainless/decryption_verification/PainlessResult.java
+++ b/src/main/java/org/pgpainless/pgpainless/decryption_verification/PainlessResult.java
@@ -19,36 +19,39 @@ import java.util.Collections;
 import java.util.HashSet;
 import java.util.Set;
 
+import org.bouncycastle.openpgp.PGPException;
 import org.bouncycastle.openpgp.PGPPublicKey;
 import org.bouncycastle.openpgp.PGPPublicKeyRing;
 import org.pgpainless.pgpainless.algorithm.CompressionAlgorithm;
 import org.pgpainless.pgpainless.algorithm.SymmetricKeyAlgorithm;
+import org.pgpainless.pgpainless.key.OpenPgpV4Fingerprint;
 
 public class PainlessResult {
 
     private final Set<Long> recipientKeyIds;
-    private final Long decryptionKeyId;
+    private final OpenPgpV4Fingerprint decryptionFingerprint;
+    private final Set<Long> unverifiedSignatureKeyIds;
+    private final Set<OpenPgpV4Fingerprint> verifiedSignaturesFingerprints;
+
     private final SymmetricKeyAlgorithm symmetricKeyAlgorithm;
     private final CompressionAlgorithm compressionAlgorithm;
     private final boolean integrityProtected;
-    private final Set<Long> signatureKeyIds;
-    private final Set<Long> verifiedSignatureKeyIds;
 
     public PainlessResult(Set<Long> recipientKeyIds,
-                          Long decryptionKeyId,
+                          OpenPgpV4Fingerprint decryptionFingerprint,
                           SymmetricKeyAlgorithm symmetricKeyAlgorithm,
                           CompressionAlgorithm algorithm,
                           boolean integrityProtected,
-                          Set<Long> signatureKeyIds,
-                          Set<Long> verifiedSignatureKeyIds) {
+                          Set<Long> unverifiedSignatureKeyIds,
+                          Set<OpenPgpV4Fingerprint> verifiedSignaturesFingerprints) {
 
         this.recipientKeyIds = Collections.unmodifiableSet(recipientKeyIds);
-        this.decryptionKeyId = decryptionKeyId;
+        this.decryptionFingerprint = decryptionFingerprint;
         this.symmetricKeyAlgorithm = symmetricKeyAlgorithm;
         this.compressionAlgorithm = algorithm;
         this.integrityProtected = integrityProtected;
-        this.signatureKeyIds = Collections.unmodifiableSet(signatureKeyIds);
-        this.verifiedSignatureKeyIds = Collections.unmodifiableSet(verifiedSignatureKeyIds);
+        this.unverifiedSignatureKeyIds = Collections.unmodifiableSet(unverifiedSignatureKeyIds);
+        this.verifiedSignaturesFingerprints = Collections.unmodifiableSet(verifiedSignaturesFingerprints);
     }
 
     public Set<Long> getRecipientKeyIds() {
@@ -59,8 +62,8 @@ public class PainlessResult {
         return !getRecipientKeyIds().isEmpty();
     }
 
-    public Long getDecryptionKeyId() {
-        return decryptionKeyId;
+    public OpenPgpV4Fingerprint getDecryptionFingerprint() {
+        return decryptionFingerprint;
     }
 
     public SymmetricKeyAlgorithm getSymmetricKeyAlgorithm() {
@@ -75,26 +78,26 @@ public class PainlessResult {
         return integrityProtected;
     }
 
-    public Set<Long> getAllSignatureKeyIds() {
-        return signatureKeyIds;
+    public Set<Long> getAllSignatureKeyFingerprints() {
+        return unverifiedSignatureKeyIds;
     }
 
     public boolean isSigned() {
-        return !signatureKeyIds.isEmpty();
+        return !unverifiedSignatureKeyIds.isEmpty();
     }
 
-    public Set<Long> getVerifiedSignatureKeyIds() {
-        return verifiedSignatureKeyIds;
+    public Set<OpenPgpV4Fingerprint> getVerifiedSignaturesFingerprints() {
+        return verifiedSignaturesFingerprints;
     }
 
     public boolean isVerified() {
-        return !verifiedSignatureKeyIds.isEmpty();
+        return !verifiedSignaturesFingerprints.isEmpty();
     }
 
-    public boolean containsVerifiedSignatureFrom(PGPPublicKeyRing publicKeys) {
+    public boolean containsVerifiedSignatureFrom(PGPPublicKeyRing publicKeys) throws PGPException {
         for (PGPPublicKey key : publicKeys) {
-            long id = key.getKeyID();
-            if (verifiedSignatureKeyIds.contains(id)) {
+            OpenPgpV4Fingerprint fingerprint = new OpenPgpV4Fingerprint(key);
+            if (verifiedSignaturesFingerprints.contains(fingerprint)) {
                 return true;
             }
         }
@@ -107,21 +110,21 @@ public class PainlessResult {
 
     static class Builder {
 
-        private final Set<Long> recipientKeyIds = new HashSet<>();
-        private Long decryptionKeyId;
+        private final Set<Long> recipientFingerprints = new HashSet<>();
+        private OpenPgpV4Fingerprint decryptionFingerprint;
+        private final Set<Long> unverifiedSignatureKeyIds = new HashSet<>();
+        private final Set<OpenPgpV4Fingerprint> verifiedSignatureFingerprints = new HashSet<>();
         private SymmetricKeyAlgorithm symmetricKeyAlgorithm = SymmetricKeyAlgorithm.NULL;
         private CompressionAlgorithm compressionAlgorithm = CompressionAlgorithm.UNCOMPRESSED;
         private boolean integrityProtected = false;
-        private final Set<Long> signatureKeyIds = new HashSet<>();
-        private final Set<Long> verifiedSignatureKeyIds = new HashSet<>();
 
-        public Builder addRecipientKeyId(long id) {
-            this.recipientKeyIds.add(id);
+        public Builder addRecipientKeyId(Long keyId) {
+            this.recipientFingerprints.add(keyId);
             return this;
         }
 
-        public Builder setDecryptionKeyId(long id) {
-            this.decryptionKeyId = id;
+        public Builder setDecryptionFingerprint(OpenPgpV4Fingerprint fingerprint) {
+            this.decryptionFingerprint = fingerprint;
             return this;
         }
 
@@ -130,13 +133,13 @@ public class PainlessResult {
             return this;
         }
 
-        public Builder addSignatureKeyId(long id) {
-            this.signatureKeyIds.add(id);
+        public Builder addUnverifiedSignatureKeyId(Long keyId) {
+            this.unverifiedSignatureKeyIds.add(keyId);
             return this;
         }
 
-        public Builder addVerifiedSignatureKeyId(long id) {
-            this.verifiedSignatureKeyIds.add(id);
+        public Builder addVerifiedSignatureFingerprint(OpenPgpV4Fingerprint fingerprint) {
+            this.verifiedSignatureFingerprints.add(fingerprint);
             return this;
         }
 
@@ -151,7 +154,7 @@ public class PainlessResult {
         }
 
         public PainlessResult build() {
-            return new PainlessResult(recipientKeyIds, decryptionKeyId, symmetricKeyAlgorithm, compressionAlgorithm, integrityProtected, signatureKeyIds, verifiedSignatureKeyIds);
+            return new PainlessResult(recipientFingerprints, decryptionFingerprint, symmetricKeyAlgorithm, compressionAlgorithm, integrityProtected, unverifiedSignatureKeyIds, verifiedSignatureFingerprints);
         }
     }
 }
diff --git a/src/main/java/org/pgpainless/pgpainless/decryption_verification/SignatureVerifyingInputStream.java b/src/main/java/org/pgpainless/pgpainless/decryption_verification/SignatureVerifyingInputStream.java
index 19997cc7..3343ac00 100644
--- a/src/main/java/org/pgpainless/pgpainless/decryption_verification/SignatureVerifyingInputStream.java
+++ b/src/main/java/org/pgpainless/pgpainless/decryption_verification/SignatureVerifyingInputStream.java
@@ -28,6 +28,7 @@ import org.bouncycastle.openpgp.PGPObjectFactory;
 import org.bouncycastle.openpgp.PGPOnePassSignature;
 import org.bouncycastle.openpgp.PGPSignature;
 import org.bouncycastle.openpgp.PGPSignatureList;
+import org.pgpainless.pgpainless.key.OpenPgpV4Fingerprint;
 
 public class SignatureVerifyingInputStream extends FilterInputStream {
 
@@ -35,14 +36,14 @@ public class SignatureVerifyingInputStream extends FilterInputStream {
     private static final Level LEVEL = Level.INFO;
 
     private final PGPObjectFactory objectFactory;
-    private final Map<Long, PGPOnePassSignature> onePassSignatures;
+    private final Map<OpenPgpV4Fingerprint, PGPOnePassSignature> onePassSignatures;
     private final PainlessResult.Builder resultBuilder;
 
     private boolean validated = false;
 
     protected SignatureVerifyingInputStream(InputStream inputStream,
                                             PGPObjectFactory objectFactory,
-                                            Map<Long, PGPOnePassSignature> onePassSignatures,
+                                            Map<OpenPgpV4Fingerprint, PGPOnePassSignature> onePassSignatures,
                                             PainlessResult.Builder resultBuilder) {
         super(inputStream);
         this.objectFactory = objectFactory;
@@ -94,16 +95,25 @@ public class SignatureVerifyingInputStream extends FilterInputStream {
             }
 
             for (PGPSignature signature : signatureList) {
-                PGPOnePassSignature onePassSignature = onePassSignatures.get(signature.getKeyID());
-                if (onePassSignature == null) {
+                OpenPgpV4Fingerprint fingerprint = null;
+                for (OpenPgpV4Fingerprint f : onePassSignatures.keySet()) {
+                    if (f.getKeyId() == signature.getKeyID()) {
+                        fingerprint = f;
+                        break;
+                    }
+                }
+
+                PGPOnePassSignature onePassSignature;
+                if (fingerprint == null || (onePassSignature = onePassSignatures.get(fingerprint)) == null) {
                     LOGGER.log(LEVEL, "Found Signature without respective OnePassSignature packet -> skip");
                     continue;
                 }
+
                 if (!onePassSignature.verify(signature)) {
                     throw new SignatureException("Bad Signature of key " + signature.getKeyID());
                 } else {
                     LOGGER.log(LEVEL, "Verified signature of key " + Long.toHexString(signature.getKeyID()));
-                    resultBuilder.addVerifiedSignatureKeyId(signature.getKeyID());
+                    resultBuilder.addVerifiedSignatureFingerprint(fingerprint);
                 }
             }
         } catch (PGPException | SignatureException e) {
diff --git a/src/main/java/org/pgpainless/pgpainless/key/OpenPgpV4Fingerprint.java b/src/main/java/org/pgpainless/pgpainless/key/OpenPgpV4Fingerprint.java
index 1158c1a5..8e453821 100644
--- a/src/main/java/org/pgpainless/pgpainless/key/OpenPgpV4Fingerprint.java
+++ b/src/main/java/org/pgpainless/pgpainless/key/OpenPgpV4Fingerprint.java
@@ -1,5 +1,4 @@
-/**
- *
+/*
  * Copyright 2018 Paul Schaub.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -16,7 +15,7 @@
  */
 package org.pgpainless.pgpainless.key;
 
-import javax.xml.bind.DatatypeConverter;
+import java.math.BigInteger;
 import java.nio.ByteBuffer;
 import java.nio.charset.Charset;
 import java.util.Arrays;
@@ -93,7 +92,12 @@ public class OpenPgpV4Fingerprint implements CharSequence, Comparable<OpenPgpV4F
      * @return key id
      */
     public long getKeyId() {
-        byte[] bytes = DatatypeConverter.parseHexBinary(this.toString());
+
+        byte[] bytes = new BigInteger(toString(), 16).toByteArray();
+        if (bytes.length != toString().length() / 2) {
+            bytes = Arrays.copyOfRange(bytes, 1, bytes.length);
+        }
+
         byte[] lower8Bytes = Arrays.copyOfRange(bytes, 12, 20);
         ByteBuffer byteBuffer = ByteBuffer.allocate(8);
         byteBuffer.put(lower8Bytes);
diff --git a/src/main/java/org/pgpainless/pgpainless/key/collection/KeyRingCollection.java b/src/main/java/org/pgpainless/pgpainless/key/collection/KeyRingCollection.java
index c3f914a0..e8101eee 100644
--- a/src/main/java/org/pgpainless/pgpainless/key/collection/KeyRingCollection.java
+++ b/src/main/java/org/pgpainless/pgpainless/key/collection/KeyRingCollection.java
@@ -15,14 +15,19 @@
  */
 package org.pgpainless.pgpainless.key.collection;
 
-import java.util.Objects;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.bouncycastle.openpgp.PGPException;
 import org.bouncycastle.openpgp.PGPPublicKeyRing;
 import org.bouncycastle.openpgp.PGPPublicKeyRingCollection;
 import org.bouncycastle.openpgp.PGPSecretKeyRing;
 import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
+import org.pgpainless.pgpainless.PGPainless;
 
 public class KeyRingCollection {
 
@@ -36,6 +41,20 @@ public class KeyRingCollection {
         this.secretKeys = secretKeyRings;
     }
 
+    public KeyRingCollection(File pubRingFile, File secRingFile) throws IOException, PGPException {
+        if (pubRingFile != null) {
+            InputStream pubRingIn = new FileInputStream(pubRingFile);
+            this.publicKeys = PGPainless.readKeyRing().publicKeyRingCollection(pubRingIn);
+            pubRingIn.close();
+        }
+
+        if (secRingFile != null) {
+            InputStream secRingIn = new FileInputStream(secRingFile);
+            this.secretKeys = PGPainless.readKeyRing().secretKeyRingCollection(secRingIn);
+            secRingIn.close();
+        }
+    }
+
     public KeyRingCollection(PGPPublicKeyRingCollection publicKeyRings) {
         this(publicKeyRings, null);
     }
@@ -45,7 +64,12 @@ public class KeyRingCollection {
     }
 
     public void importPublicKeys(PGPPublicKeyRingCollection publicKeyRings) {
-        for (PGPPublicKeyRing keyRing : Objects.requireNonNull(publicKeyRings)) {
+        if (this.publicKeys == null) {
+            this.publicKeys = publicKeyRings;
+            return;
+        }
+
+        for (PGPPublicKeyRing keyRing : publicKeyRings) {
             try {
                 this.publicKeys = PGPPublicKeyRingCollection.addPublicKeyRing(this.publicKeys, keyRing);
             } catch (IllegalArgumentException e) {
@@ -57,7 +81,12 @@ public class KeyRingCollection {
     }
 
     public void importSecretKeys(PGPSecretKeyRingCollection secretKeyRings) {
-        for (PGPSecretKeyRing keyRing : Objects.requireNonNull(secretKeyRings)) {
+        if (this.secretKeys == null) {
+            this.secretKeys = secretKeyRings;
+            return;
+        }
+
+        for (PGPSecretKeyRing keyRing : secretKeyRings) {
             try {
                 this.secretKeys = PGPSecretKeyRingCollection.addSecretKeyRing(this.secretKeys, keyRing);
             } catch (IllegalArgumentException e) {
diff --git a/src/test/java/org/pgpainless/pgpainless/EncryptDecryptTest.java b/src/test/java/org/pgpainless/pgpainless/EncryptDecryptTest.java
index 938e25af..3a2f635a 100644
--- a/src/test/java/org/pgpainless/pgpainless/EncryptDecryptTest.java
+++ b/src/test/java/org/pgpainless/pgpainless/EncryptDecryptTest.java
@@ -27,7 +27,6 @@ import java.security.InvalidAlgorithmParameterException;
 import java.security.NoSuchAlgorithmException;
 import java.security.NoSuchProviderException;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -43,13 +42,13 @@ import org.pgpainless.pgpainless.algorithm.SymmetricKeyAlgorithm;
 import org.pgpainless.pgpainless.decryption_verification.DecryptionStream;
 import org.pgpainless.pgpainless.decryption_verification.PainlessResult;
 import org.pgpainless.pgpainless.encryption_signing.EncryptionStream;
-import org.pgpainless.pgpainless.key.protection.SecretKeyRingProtector;
-import org.pgpainless.pgpainless.key.protection.UnprotectedKeysProtector;
 import org.pgpainless.pgpainless.key.generation.KeySpec;
 import org.pgpainless.pgpainless.key.generation.type.ElGamal_GENERAL;
 import org.pgpainless.pgpainless.key.generation.type.RSA_GENERAL;
 import org.pgpainless.pgpainless.key.generation.type.length.ElGamalLength;
 import org.pgpainless.pgpainless.key.generation.type.length.RsaLength;
+import org.pgpainless.pgpainless.key.protection.SecretKeyRingProtector;
+import org.pgpainless.pgpainless.key.protection.UnprotectedKeysProtector;
 import org.pgpainless.pgpainless.util.BCUtil;
 
 public class EncryptDecryptTest extends AbstractPGPainlessTest {
@@ -142,8 +141,8 @@ public class EncryptDecryptTest extends AbstractPGPainlessTest {
 
         PainlessResult encryptionResult = encryptor.getResult();
 
-        assertFalse(encryptionResult.getAllSignatureKeyIds().isEmpty());
-        for (long keyId : encryptionResult.getAllSignatureKeyIds()) {
+        assertFalse(encryptionResult.getAllSignatureKeyFingerprints().isEmpty());
+        for (long keyId : encryptionResult.getAllSignatureKeyFingerprints()) {
             assertTrue(BCUtil.keyRingContainsKeyWithId(sender, keyId));
         }
 
@@ -168,8 +167,7 @@ public class EncryptDecryptTest extends AbstractPGPainlessTest {
         DecryptionStream decryptor = PGPainless.createDecryptor()
                 .onInputStream(envelopeIn)
                 .decryptWith(keyDecryptor, BCUtil.keyRingsToKeyRingCollection(recipient))
-                .verifyWith(Collections.singleton(senderPub.getPublicKey().getKeyID()),
-                        BCUtil.keyRingsToKeyRingCollection(senderPub))
+                .verifyWith(BCUtil.keyRingsToKeyRingCollection(senderPub))
                 .ignoreMissingPublicKeys()
                 .build();
 
diff --git a/src/test/java/org/pgpainless/pgpainless/OpenPgpV4FingerprintTest.java b/src/test/java/org/pgpainless/pgpainless/OpenPgpV4FingerprintTest.java
new file mode 100644
index 00000000..110d4632
--- /dev/null
+++ b/src/test/java/org/pgpainless/pgpainless/OpenPgpV4FingerprintTest.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2018 Paul Schaub.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.pgpainless.pgpainless;
+
+import static junit.framework.TestCase.assertEquals;
+
+import java.io.IOException;
+
+import org.bouncycastle.openpgp.PGPException;
+import org.bouncycastle.openpgp.PGPPublicKey;
+import org.junit.Test;
+import org.pgpainless.pgpainless.key.OpenPgpV4Fingerprint;
+
+public class OpenPgpV4FingerprintTest {
+
+    @Test(expected = PGPException.class)
+    public void fpTooShort() throws PGPException {
+        String fp = "484f57414c495645"; // Asking Mark
+        new OpenPgpV4Fingerprint(fp);
+    }
+
+    @Test(expected = PGPException.class)
+    public void invalidHexTest() throws PGPException {
+        String fp = "UNFORTUNATELYTHISISNOVALIDHEXADECIMALDOH";
+        new OpenPgpV4Fingerprint(fp);
+    }
+
+    @Test
+    public void validFingerprintTest() throws PGPException {
+        String fp = "4A4F48414E4E53454E2049532041204E45524421";
+        OpenPgpV4Fingerprint finger = new OpenPgpV4Fingerprint(fp);
+        assertEquals(fp, finger.toString());
+    }
+
+    @Test
+    public void convertsToUpperCaseTest() throws PGPException {
+        String fp = "444f4e5420552048415645204120484f4242593f";
+        OpenPgpV4Fingerprint finger = new OpenPgpV4Fingerprint(fp);
+        assertEquals("444F4E5420552048415645204120484F4242593F", finger.toString());
+    }
+
+    @Test
+    public void equalsOtherFingerprintTest() throws PGPException {
+        OpenPgpV4Fingerprint finger = new OpenPgpV4Fingerprint("5448452043414b452049532041204c4945212121");
+        assertEquals(finger, new OpenPgpV4Fingerprint("5448452043414B452049532041204C4945212121"));
+    }
+
+    @Test
+    public void keyIdTest() throws IOException, PGPException {
+        PGPPublicKey key = TestKeys.getJulietPublicKeyRing().getPublicKey();
+        long keyId = key.getKeyID();
+
+        OpenPgpV4Fingerprint fingerprint = new OpenPgpV4Fingerprint(key);
+        assertEquals(keyId, fingerprint.getKeyId());
+    }
+}
diff --git a/src/test/java/org/pgpainless/pgpainless/TestKeysTest.java b/src/test/java/org/pgpainless/pgpainless/TestKeysTest.java
index 0abe4083..d7ddea18 100644
--- a/src/test/java/org/pgpainless/pgpainless/TestKeysTest.java
+++ b/src/test/java/org/pgpainless/pgpainless/TestKeysTest.java
@@ -57,9 +57,7 @@ public class TestKeysTest extends AbstractPGPainlessTest {
         DecryptionStream decryptor = PGPainless.createDecryptor()
                 .onInputStream(new ByteArrayInputStream(encryptedMessage.getBytes()))
                 .decryptWith(new UnprotectedKeysProtector(), new PGPSecretKeyRingCollection(Collections.singleton(juliet)))
-                .verifyWith(
-                        Collections.singleton(juliet.getPublicKey().getKeyID()),
-                        BCUtil.keyRingsToKeyRingCollection(BCUtil.publicKeyRingFromSecretKeyRing(juliet)))
+                .verifyWith(BCUtil.keyRingsToKeyRingCollection(BCUtil.publicKeyRingFromSecretKeyRing(juliet)))
                 .ignoreMissingPublicKeys()
                 .build();