int decode(final byte[] buf, int bi) {
        allow = buf[bi] == (byte) 0x00;
        bi++;
        flags = buf[bi++] & 0xFF;
        final int size = ServerMessageBlock.readInt2(buf, bi);
        bi += 2;
        access = ServerMessageBlock.readInt4(buf, bi);
        bi += 4;
        sid = new SID(buf, bi);
        return size;
    }

    void appendCol(final StringBuffer sb, final String str, final int width) {

        // Verify structure size (should be 24)
        assertEquals(24, SMBUtil.readInt2(buffer, offset));

        // Verify close flags (2 bytes at offset+2, should be 0 by default)
        assertEquals(0, SMBUtil.readInt2(buffer, offset + 2));

        // Verify Reserved (4 bytes at offset+4, should be 0)
        assertEquals(0, SMBUtil.readInt4(buffer, offset + 4));

        assertEquals(TEST_LAST_WRITE_TIME, SMBUtil.readTime(buffer, dstIndex + 16));
        assertEquals(TEST_CHANGE_TIME, SMBUtil.readTime(buffer, dstIndex + 24));
        assertEquals(TEST_ATTRIBUTES, SMBUtil.readInt4(buffer, dstIndex + 32));
    }

    @Test
    @DisplayName("Test FileBasicInfo size method")
    void testFileBasicInfoSize() {
        // Given
        FileBasicInfo info = new FileBasicInfo();

        assertEquals(AvPair.MsvAvFlags, SMBUtil.readInt2(encoded, 0), "First pair type should be MsvAvFlags");
        assertEquals(4, SMBUtil.readInt2(encoded, 2), "First pair length should be 4");

        // Check AvFlags data
        assertEquals(0x12345678, SMBUtil.readInt4(encoded, 4), "Flags value should match");

        // Check EOL
        assertEquals(AvPair.MsvAvEOL, SMBUtil.readInt2(encoded, 8), "Should end with EOL");

        }
        this.sub_authority = new int[this.sub_authority_count];
        for (int i = 0; i < this.sub_authority_count; i++) {
            this.sub_authority[i] = SMBUtil.readInt4(src, si);
            si += 4;
        }
    }

    /**
     * Construct a SID from it's textual representation such as
     * {@code S-1-5-21-1496946806-2192648263-3843101252-1029}.
     *

            int initialFlags = 0x00000001;
            SMBUtil.writeInt4(initialFlags, data, 16);

            digest.sign(data, 0, data.length, request, response);

            int flags = SMBUtil.readInt4(data, 16);
            assertTrue((flags & ServerMessageBlock2.SMB2_FLAGS_SIGNED) != 0, "Signed flag should be set");
        }

        @Test
        @DisplayName("Should preserve other flags when setting signed flag")

    void testReadInt2() {
        byte[] src = { (byte) 0x12, (byte) 0x34 };
        assertEquals(0x1234, NameServicePacket.readInt2(src, 0));
    }

    @Test
    void testReadInt4() {
        byte[] src = { (byte) 0x12, (byte) 0x34, (byte) 0x56, (byte) 0x78 };
        assertEquals(0x12345678, NameServicePacket.readInt4(src, 0));
    }

    @Test
    void testReadNameTrnId() {
        byte[] src = { (byte) 0xAB, (byte) 0xCD };

        this.errorCode = SMBUtil.readInt4(buffer, bufferIndex + SmbConstants.ERROR_CODE_OFFSET);
        this.flags = buffer[bufferIndex + SmbConstants.FLAGS_OFFSET];
        this.flags2 = SMBUtil.readInt2(buffer, bufferIndex + SmbConstants.FLAGS_OFFSET + 1);
        this.tid = SMBUtil.readInt2(buffer, bufferIndex + SmbConstants.TID_OFFSET);
        this.pid = SMBUtil.readInt2(buffer, bufferIndex + SmbConstants.TID_OFFSET + 2);

            int totalLen = testMessage.encode(buffer, 0);

            assertTrue(totalLen > testMessage.getLength());

            // Check next command offset was written
            int nextOffset = SMBUtil.readInt4(buffer, 20);
            assertTrue(nextOffset > 0);
        }

        @Test
        @DisplayName("Should sign chained messages with digest")
        void testEncodeChainedWithDigest() {

        }
        sub_authority = new int[sub_authority_count];
        for (int i = 0; i < sub_authority_count; i++) {
            sub_authority[i] = ServerMessageBlock.readInt4(src, si);
            si += 4;
        }
    }

    /**
     * Construct a SID from it's textual representation such as
     * {@code S-1-5-21-1496946806-2192648263-3843101252-1029}.
     *