int D = context[3];

        A = FF(A, B, C, D, X[0], 3);
        D = FF(D, A, B, C, X[1], 7);
        C = FF(C, D, A, B, X[2], 11);
        B = FF(B, C, D, A, X[3], 19);
        A = FF(A, B, C, D, X[4], 3);
        D = FF(D, A, B, C, X[5], 7);
        C = FF(C, D, A, B, X[6], 11);
        B = FF(B, C, D, A, X[7], 19);
        A = FF(A, B, C, D, X[8], 3);
        D = FF(D, A, B, C, X[9], 7);

                    buf[p++] = (byte) der.length;
                    System.arraycopy(der, 0, buf, p, der.length);
                    p += der.length;
                    // NAME_LEN = 0xFF FF FF FF
                    buf[p++] = (byte) 0xFF;
                    buf[p++] = (byte) 0xFF;
                    buf[p++] = (byte) 0xFF;
                    buf[p++] = (byte) 0xFF;
                    return buf;

  // masking the remaining seven bytes.
  // To test this, we give an input where bit 7 is not cleared. For example:
  // (1) 00 01 02 03 04 05 06 07 80
  // (2) 00 01 02 03 04 05 06 07 81
  // (3) 00 01 02 03 04 05 06 07 ff (or anything in between)
  // A fault implementation will generate collisions for these inputs.
  public void testCollisionsDueToIncorrectSignExtension() {

        AvFlags negativeAvFlags = new AvFlags(negativeBytes);
        assertNotNull(negativeAvFlags, "AvFlags object should not be null for negative bytes");
        assertEquals(-1, negativeAvFlags.getFlags(), "Flags should be -1 for all FF bytes");
    }

    /**
     * Test constructor with integer flags.
     */
    @Test
    void testAvFlagsIntConstructor() {
        // Test with a positive integer
        int flags = 0x12345678;

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        assertEquals("FFFFFFFF", Hexdump.toHexString(-1, 8));

        // Test different sizes
        assertEquals("00", Hexdump.toHexString(0, 2));
        assertEquals("FF", Hexdump.toHexString(255, 2));
        assertEquals("1234", Hexdump.toHexString(0x1234, 4));
    }

    @Test
    @DisplayName("Should convert long to hex string with padding")
    void testLongToHexString() {