byte[] result;
        result = cipher.doFinal(data);

        decrypt = new byte[result.length];
        System.arraycopy(result, 0, decrypt, 0, result.length);

        int tempSize = decrypt.length - 24;

        byte[] output = new byte[tempSize];
        System.arraycopy(decrypt, 24, output, 0, tempSize);

        decrypt = output;
        return decrypt;
    }

    private static class CacheEntry <T> {

        long expiration;
        Map<String, T> map;


        CacheEntry ( long ttl ) {
            this.expiration = System.currentTimeMillis() + ttl * 1000L;
            this.map = new ConcurrentHashMap<>();
        }
    }

    private static class NegativeCacheEntry <T> extends CacheEntry<T> {

        /**
         * @param ttl

         */


        Path krbConfig = Files.createTempFile("krb5", ".conf");
        Files.write(krbConfig,Arrays.asList("[libdefaults]", "allow_weak_crypto=true"));
        System.setProperty("java.security.krb5.conf", krbConfig.toString());

        try ( SmbResource f = getDefaultShareRoot() ) {
            f.getDiskFreeSpace();
        }
    }


    public void assertCloseTime ( long timeMs ) {
        if ( timeMs - System.currentTimeMillis() > 5 * 60 * 1000L ) {
            assertTrue("Time is not within 30s, check clocks " + new Date(timeMs), false);
        }
    }


    @Test

            try ( CloseableIterator<SmbResource> it = smbFile.children() ) {
                while ( it.hasNext() ) {
                    try ( SmbResource serv = it.next() ) {
                        System.err.println(serv.getName());
                    }
                }
            }
        }
        catch ( SmbUnsupportedOperationException e ) {
            Assume.assumeTrue("Browsing unsupported", false);

            byte[] mid = new byte[32];
            this.random.nextBytes(mid);
            this.machineId = mid;
        }

        if ( this.nativeOs == null ) {
            this.nativeOs = System.getProperty("os.name");
        }

        if ( this.flags2 == 0 ) {
            this.flags2 = SmbConstants.FLAGS2_LONG_FILENAMES | SmbConstants.FLAGS2_EXTENDED_ATTRIBUTES

                this.lastAccess = info.getLastAccessTime();
                this.attrExpiration = System.currentTimeMillis() + th.getConfig().getAttributeCacheTimeout();
            }
            else if ( info instanceof FileStandardInfo ) {
                this.size = info.getSize();
                this.sizeExpiration = System.currentTimeMillis() + th.getConfig().getAttributeCacheTimeout();
            }
            return info;

                System.arraycopy(this.sbuf, 4, negoReqBuffer, 0, reqLen);
            }

            negotiatePeek();

            r = smb2neg.initResponse(getContext());
            int respLen = r.decode(this.sbuf, 4);
            r.received();

            if ( doPreauth ) {
                negoRespBuffer = new byte[respLen];
                System.arraycopy(this.sbuf, 4, negoRespBuffer, 0, respLen);

        this.smbNotifyBufferSize = Config.getInt(p, "jcifs.smb.client.notify_buf_size", SmbConstants.DEFAULT_NOTIFY_BUF_SIZE);

        this.nativeOs = p.getProperty("jcifs.smb.client.nativeOs", System.getProperty("os.name"));
        this.nativeLanMan = p.getProperty("jcifs.smb.client.nativeLanMan", "jCIFS");
        this.vcNumber = 1;

                e = i - 4;
                break;
            }
        }

        StackTraceElement[] res = new StackTraceElement[e - s];
        System.arraycopy(stackTrace, s, res, 0, e - s);
        return res;
    }


    /**
     * {@inheritDoc}
     *
     * @see java.lang.Object#finalize()
     */
    @Override