Add initial tests for all operations

external-sop/src/test/java/sop/external/ExternalDetachedSignVerifyRoundTripTest.java

@@ -0,0 +1,74 @@
+// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.external;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledIf;
+import sop.Verification;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static sop.external.JUtils.assertArrayStartsWith;
+
+@EnabledIf("sop.external.AbstractExternalSOPTest#isExternalSopInstalled")
+public class ExternalDetachedSignVerifyRoundTripTest extends AbstractExternalSOPTest {
+
+    private static final String BEGIN_PGP_SIGNATURE = "-----BEGIN PGP SIGNATURE-----\n";
+    private static final byte[] BEGIN_PGP_SIGNATURE_BYTES = BEGIN_PGP_SIGNATURE.getBytes(StandardCharsets.UTF_8);
+
+    @Test
+    public void signVerifyWithAliceKey() throws IOException {
+        byte[] message = "Hello, World!\n".getBytes(StandardCharsets.UTF_8);
+
+        byte[] signature = getSop().detachedSign()
+                .key(TestKeys.ALICE_KEY.getBytes(StandardCharsets.UTF_8))
+                .data(message)
+                .toByteArrayAndResult()
+                .getBytes();
+
+        List<Verification> verificationList = getSop().detachedVerify()
+                .cert(TestKeys.ALICE_CERT.getBytes(StandardCharsets.UTF_8))
+                .signatures(signature)
+                .data(message);
+
+        assertFalse(verificationList.isEmpty());
+        assertTrue(verificationList.get(0).toString().contains("EB85BB5FA33A75E15E944E63F231550C4F47E38E EB85BB5FA33A75E15E944E63F231550C4F47E38E"));
+    }
+
+    @Test
+    public void signVerifyWithFreshEncryptedKey() throws IOException {
+        byte[] message = "Hello, World!\n".getBytes(StandardCharsets.UTF_8);
+        byte[] keyPassword = "sw0rdf1sh".getBytes(StandardCharsets.UTF_8);
+        byte[] key = getSop().generateKey()
+                .userId("Alice <alice@openpgp.org>")
+                .withKeyPassword(keyPassword)
+                .generate()
+                .getBytes();
+
+        byte[] cert = getSop().extractCert()
+                .key(key)
+                .getBytes();
+
+        byte[] signature = getSop().detachedSign()
+                .key(key)
+                .withKeyPassword(keyPassword)
+                .data(message)
+                .toByteArrayAndResult()
+                .getBytes();
+
+        assertArrayStartsWith(signature, BEGIN_PGP_SIGNATURE_BYTES);
+
+        List<Verification> verificationList = getSop().detachedVerify()
+                .cert(cert)
+                .signatures(signature)
+                .data(message);
+
+        assertFalse(verificationList.isEmpty());
+    }
+}