diff --git a/pgpainless-cert-d/src/main/java/org/pgpainless/certificate_store/KeyMaterialReader.java b/pgpainless-cert-d/src/main/java/org/pgpainless/certificate_store/KeyMaterialReader.java
index 409a9fe..112bf18 100644
--- a/pgpainless-cert-d/src/main/java/org/pgpainless/certificate_store/KeyMaterialReader.java
+++ b/pgpainless-cert-d/src/main/java/org/pgpainless/certificate_store/KeyMaterialReader.java
@@ -19,7 +19,17 @@ public class KeyMaterialReader implements KeyMaterialReaderBackend {
 
     @Override
     public KeyMaterial read(InputStream data, Long tag) throws IOException, BadDataException {
-        PGPKeyRing keyMaterial = PGPainless.readKeyRing().keyRing(data);
+        PGPKeyRing keyMaterial;
+        try {
+            keyMaterial = PGPainless.readKeyRing().keyRing(data);
+        } catch (IOException e) {
+            if (e.getMessage().contains("unknown object in stream") ||
+                    e.getMessage().contains("unexpected end of file in armored stream.")) {
+                throw new BadDataException();
+            } else {
+                throw e;
+            }
+        }
         if (keyMaterial instanceof PGPSecretKeyRing) {
             return KeyFactory.keyFromSecretKeyRing((PGPSecretKeyRing) keyMaterial, tag);
         } else if (keyMaterial instanceof PGPPublicKeyRing) {
diff --git a/pgpainless-cert-d/src/test/java/org/pgpainless/certificate_store/KeyMaterialReaderTest.java b/pgpainless-cert-d/src/test/java/org/pgpainless/certificate_store/KeyMaterialReaderTest.java
new file mode 100644
index 0000000..40d8048
--- /dev/null
+++ b/pgpainless-cert-d/src/test/java/org/pgpainless/certificate_store/KeyMaterialReaderTest.java
@@ -0,0 +1,46 @@
+package org.pgpainless.certificate_store;
+
+import org.junit.jupiter.api.Test;
+
+public class CertificateAndKeyFactoryTest {
+
+    private static final String KEY = "-----BEGIN PGP PRIVATE KEY BLOCK-----\n" +
+            "Comment: B21A ABBF 15DF 0FDA 3742  4DE9 AD00 8384 AD0A 064C\n" +
+            "Comment: Volodymyr Zelenskyy <zelenskyy@gov.ua>\n" +
+            "\n" +
+            "xVgEYwdKchYJKwYBBAHaRw8BAQdARSvx9BDpV0AoNYTmN/wrZXQAB7VzOV0rKEQc\n" +
+            "OkhbP5wAAP0QE5FCIOvzea7wu3Yw3LDMmOOgMaWXngYp0948VPP2+xM7wsARBB8W\n" +
+            "CgCDBYJjB0pyBYkFn6YAAwsJBwkQrQCDhK0KBkxHFAAAAAAAHgAgc2FsdEBub3Rh\n" +
+            "dGlvbnMuc2VxdW9pYS1wZ3Aub3JnpqJFBi2xLa0V4D9k4rlmibhIsMRlcvK/MK83\n" +
+            "Hjfh2CIDFQoIApsBAh4BFiEEshqrvxXfD9o3Qk3prQCDhK0KBkwAAIwNAP41uywA\n" +
+            "z+qaRhWoj0stYmmefok4WHXk34jfameTopO1LAEA6L6/crPYzIcAZraaz0s5AM/2\n" +
+            "OvJZR8LaBSj92uBDbAzNJlZvbG9keW15ciBaZWxlbnNreXkgPHplbGVuc2t5eUBn\n" +
+            "b3YudWE+wsAUBBMWCgCGBYJjB0pyBYkFn6YAAwsJBwkQrQCDhK0KBkxHFAAAAAAA\n" +
+            "HgAgc2FsdEBub3RhdGlvbnMuc2VxdW9pYS1wZ3Aub3JnuD/qrSefYHLBUQ70qQhb\n" +
+            "cClzXkMQCoGO4S3WJzib/IADFQoIApkBApsBAh4BFiEEshqrvxXfD9o3Qk3prQCD\n" +
+            "hK0KBkwAAL8DAP42+z1sDJlv64PW4iq2ODYcdY1NSptjzfiQ2hyodNBFpgD+Mkiv\n" +
+            "9e2bFvlRj2Q5Brypy3ZwKvGtikUe3s+NlKMPlgTHWARjB0pyFgkrBgEEAdpHDwEB\n" +
+            "B0BNjMb280vf8zNJ/YAtcc6nLe8uCSTtxKKHF0Go9kU+VgABAKTAn5oiixsRxfEb\n" +
+            "k1I6WQbIGk/XNPZ241k65WRdg1qODvXCwMUEGBYKATcFgmMHSnIFiQWfpgAJEK0A\n" +
+            "g4StCgZMRxQAAAAAAB4AIHNhbHRAbm90YXRpb25zLnNlcXVvaWEtcGdwLm9yZ9el\n" +
+            "oLUj9wUjbwI91PYFiLbcIMYw+G2w85rw5nLaXzHEApsCvqAEGRYKAG8FgmMHSnIJ\n" +
+            "EDWWq2wLl0UaRxQAAAAAAB4AIHNhbHRAbm90YXRpb25zLnNlcXVvaWEtcGdwLm9y\n" +
+            "Z622EwAZW4CP32L2ysCphw7DasyPOdBpDsiMv2LB7dz8FiEEZQkoZquL7+v7NBoA\n" +
+            "NZarbAuXRRoAAOu3AP0X6dEVabI84d7t4AwRpmEiShSum9CJiODSs580lzkjlAD/\n" +
+            "QOGSIE5iO155kPudwi8ubif+v4tXe4Ro++tIP85bTQ8WIQSyGqu/Fd8P2jdCTemt\n" +
+            "AIOErQoGTAAAScwBAJ2A8vuK0wEMQHhVJR1lcjUaUm7EoBVuplF85dFipXjuAP40\n" +
+            "bwvHajjg8wFLo8pwAATBd2gnNYXXDK7J2WwiZPAKAcddBGMHSnISCisGAQQBl1UB\n" +
+            "BQEBB0DG0ue4giLkEecm/qz1wPQQBIl5v18/9M0SrMUk/M16agMBCAcAAP9Z4R+9\n" +
+            "tmG3aUKOB9nwN1t4N1GnbYCmaZzTn3uJXLetYBFTwsAGBBgWCgB4BYJjB0pyBYkF\n" +
+            "n6YACRCtAIOErQoGTEcUAAAAAAAeACBzYWx0QG5vdGF0aW9ucy5zZXF1b2lhLXBn\n" +
+            "cC5vcmfZNJZA/uU2jCW1zQzCT9oK5hj0sL2taNvDFlLtkMCNqwKbDBYhBLIaq78V\n" +
+            "3w/aN0JN6a0Ag4StCgZMAAAlKwD/eUEbC8MoIitKulDZawtlC0rSITXtQJqUkGNc\n" +
+            "ujTPgIAA/1p/Y3sHn4nhmYcVX902BRXBp8YMD/cHQWZkWPhvM9YF\n" +
+            "=3nhb\n" +
+            "-----END PGP PRIVATE KEY BLOCK-----\n";
+
+    @Test
+    public void test() {
+        
+    }
+}