use same test vectors as in typescript impl

src/test/java/org/cryptomator/cryptolib/v3/UVFIntegrationTest.java

@@ -0,0 +1,86 @@
+package org.cryptomator.cryptolib.v3;
+
+import org.cryptomator.cryptolib.api.Cryptor;
+import org.cryptomator.cryptolib.api.CryptorProvider;
+import org.cryptomator.cryptolib.api.UVFMasterkey;
+import org.cryptomator.cryptolib.common.DecryptingReadableByteChannel;
+import org.cryptomator.cryptolib.common.EncryptingWritableByteChannel;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ByteChannel;
+import java.nio.channels.Channels;
+import java.nio.charset.StandardCharsets;
+import java.security.SecureRandom;
+import java.util.Arrays;
+import java.util.Base64;
+
+public class UVFIntegrationTest {
+
+	private static final SecureRandom CSPRNG = new SecureRandom();
+	private static UVFMasterkey masterkey;
+	private static Cryptor cryptor;
+
+	@BeforeAll
+	public static void setUp() {
+		// copied from UVFMasterkeyTest:
+		String json = "{\n" +
+				"    \"fileFormat\": \"AES-256-GCM-32k\",\n" +
+				"    \"nameFormat\": \"AES-SIV-512-B64URL\",\n" +
+				"    \"seeds\": {\n" +
+				"        \"HDm38g\": \"ypeBEsobvcr6wjGzmiPcTaeG7/gUfE5yuYB3ha/uSLs=\",\n" +
+				"        \"gBryKw\": \"PiPoFgA5WUoziU9lZOGxNIu9egCI1CxKy3PurtWcAJ0=\",\n" +
+				"        \"QBsJFg\": \"Ln0sA6lQeuJl7PW1NWiFpTOTogKdJBOUmXJloaJa78Y=\"\n" +
+				"    },\n" +
+				"    \"initialSeed\": \"HDm38i\",\n" +
+				"    \"latestSeed\": \"QBsJFo\",\n" +
+				"    \"kdf\": \"HKDF-SHA512\",\n" +
+				"    \"kdfSalt\": \"NIlr89R7FhochyP4yuXZmDqCnQ0dBB3UZ2D+6oiIjr8=\",\n" +
+				"    \"org.example.customfield\": 42\n" +
+				"}";
+		masterkey = UVFMasterkey.fromDecryptedPayload(json);
+		cryptor = CryptorProvider.forScheme(CryptorProvider.Scheme.UVF_DRAFT).provide(masterkey, CSPRNG);
+	}
+
+	@Test
+	public void testRootDirId() {
+		var rootDirId = masterkey.rootDirId();
+		Assertions.assertEquals("5WEGzwKkAHPwVSjT2Brr3P3zLz7oMiNpMn/qBvht7eM=", Base64.getEncoder().encodeToString(rootDirId));
+	}
+
+	@Test
+	public void testRootDirHash() {
+		var rootDirId = Base64.getDecoder().decode("5WEGzwKkAHPwVSjT2Brr3P3zLz7oMiNpMn/qBvht7eM=");
+		var dirHash = cryptor.fileNameCryptor(masterkey.firstRevision()).hashDirectoryId(rootDirId);
+		Assertions.assertEquals("RKHZLENL3PQIW6GZHE3KRRRGLFBHWHRU", dirHash);
+	}
+
+	@Test
+	public void testContentEncryption() throws IOException {
+		var baos = new java.io.ByteArrayOutputStream();
+		try (EncryptingWritableByteChannel ch = new EncryptingWritableByteChannel(Channels.newChannel(baos), cryptor)) {
+			int written = ch.write(StandardCharsets.UTF_8.encode("Hello, World!"));
+			Assertions.assertEquals(13, written);
+		}
+		var result = baos.toByteArray();
+		Assertions.assertArrayEquals(new byte[]{0x75, 0x76, 0x66, 0x00}, Arrays.copyOf(result, 4));
+		Assertions.assertArrayEquals(Base64.getUrlDecoder().decode("QBsJFo"), Arrays.copyOfRange(result, 4, 8));
+	}
+
+	@Test
+	public void testContentDecryption() throws IOException {
+		var input = Base64.getDecoder().decode("dXZmAEAbCRZxhI5sPsMiMlAQpwXzsOw13pBVX/yHydeHoOlHBS9d+wVpmRvzUKx5HQUmtGR4avjDownMNOS4sBX8G0SVc5dIADKnGUOwgF20kkc/EpGzrrgkS3C9lZoRPPOj3dm2ONfy3UkT1Q==");
+		ByteBuffer result = ByteBuffer.allocate(100);
+		try (DecryptingReadableByteChannel ch = new DecryptingReadableByteChannel(Channels.newChannel(new ByteArrayInputStream(input)), cryptor, true)) {
+			int read = ch.read(result);
+			Assertions.assertEquals(13, read);
+		}
+		result.flip();
+		Assertions.assertEquals("Hello, World!", StandardCharsets.UTF_8.decode(result).toString());
+	}
+
+}