}

        final int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if (structureSize != 65) {
            throw new SMBProtocolDecodingException("Structure size is not 65, got: " + structureSize);
        }

        this.securityMode = SMBUtil.readInt2(buffer, bufferIndex + 2);
        // Validate security mode flags

            // Then
            assertEquals(copy.size(), bytesWritten);
            assertEquals(HEADER_SIZE + (3 * CHUNK_SIZE), bytesWritten);

            // Verify complete structure
            for (int i = 0; i < SOURCE_KEY_SIZE; i++) {
                assertEquals(sourceKey[i], buffer[i]);
            }
            assertEquals(3, SMBUtil.readInt4(buffer, SOURCE_KEY_SIZE));

        Set<String> nonceSet = new HashSet<>();
        for (int i = 0; i < 100; i++) {
            byte[] nonce = gcmContext.generateSecureNonce();

            // Verify nonce structure
            assertEquals(16, nonce.length, "GCM secure nonce should be 16 bytes");

            // Check that secure nonces provide full diversity (entire nonce is random)
            String nonceHex = bytesToHex(nonce);

            // Close the digest
            digest.close();

            // Verify operations fail after close
            byte[] data = new byte[128];
            // Initialize the data buffer with proper SMB2 header structure
            SMBUtil.writeInt4(0xFE534D42, data, 0); // SMB2 signature
            SMBUtil.writeInt4(0x0000, data, 12); // Command = 0
            SMBUtil.writeInt4(0x0000, data, 16); // Flags = 0

        // Verify bytes consumed matches the actual data size
        assertTrue(bytesConsumed < 0); // Return value is negative (start - bufferIndex)
        assertEquals(-94 - filename.length() * 2, bytesConsumed); // Base structure + filename length
    }

    @Test
    @DisplayName("Test decode with maximum field values")
    void testDecodeWithMaximumValues() throws SMBProtocolDecodingException {

        assertEquals(0, size);
        assertNull(securityDescriptor.getAces());
    }

    @Test
    @DisplayName("Test decode with complex SID structure")
    void testDecodeWithComplexSid() throws SMBProtocolDecodingException {
        // Prepare buffer with multi-authority SID
        testBuffer[0] = 0x01; // revision
        testBuffer[1] = 0x00; // padding

import org.junit.jupiter.api.Test

/**
 * Unit test for [FastFallbackExchangeFinder] implementation details.
 *
 * This test uses [TaskFaker] to deterministically test racy code. Each function in this test has
 * the same structure:
 *
 *  * prepare a set of plans, each with a predictable connect delay
 *  * attempt to find a connection
 *  * step through time, asserting that the expected side effects are performed.
 */

  /**
   * End of Transmission Block: A communication control character used to indicate the end of a
   * block of data for communication purposes. ETB is used for blocking data where the block
   * structure is not necessarily related to the processing format.
   *
   * @since 8.0
   */
  public static final byte ETB = 23;

  /**

 * which is optimal, and <i>not</i> the size of the internal hashtable, which could be much larger
 * than {@code size()}. Furthermore, this structure places significantly reduced load on the garbage
 * collector by only using a constant number of internal objects.
 *
 * <p>If there are no removals, then iteration order for the {@link #entrySet}, {@link #keySet}, and

-#define	UT_HOSTSIZE	16
+#define UT_LINESIZE	32
+#define UT_NAMESIZE	32
+#define UT_HOSTSIZE	256
 
 
+/* The structure describing an entry in the database of
+   previous logins.  */
 struct lastlog
   {
     time_t ll_time;
@@ -36,12 +38,16 @@ struct lastlog
     char ll_host[UT_HOSTSIZE];
   };
 
+/* The structure describing an entry in the user accounting database.  */
 struct utmp
   {
-    char ut_line[UT_LINESIZE];