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  • Encrypt uploaded pdf files with mcrypt and php

    - by microchasm
    I'm currently set up with a CentOS box that utilizes mcrypt to encrypt/decrypt data to/from the database. In my haste, I forgot that I also need a solution to encrypt files (primarily pdf, with a xls and txt file here and there). Is there a way to utilize mcrypt to encrypt uploaded pdf files? I understand the possibility of file_get_contents() with txt; is a similar solution available for other formats? Thanks!

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  • Real time writing to disk

    - by Jesper
    Is there any software out there that can help me track, in real time, files being changed and/or created on my Windows (Windows 7) system? I'm trying to figure out all files being changed when setting up Windows Live Mail as I want to sync all relevant files between two computers. And no, the storage folder is not enough. I'm grateful for any help. Thanks!

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  • How to include space in drive label using command-line MS format?

    - by Leif Carlsen
    The obvious-to-me approaches fail. # format h: /fs:ntfs /q /y /V:512MB Disk Invalid parameter - Disk # format h: /fs:ntfs /q /y /V:"512MB Disk" Invalid parameter - Disk" # format h: /fs:ntfs /q /y /V:"512MB\ Disk" Invalid parameter - Disk" # format h: /fs:ntfs /q /y /V:512MB\ Disk Invalid parameter - Disk Okay, so label works after-the fact. # label h: 512MB Disk # But how to do it using format? Am I missing some kind of escape sequence?

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  • How to distinguish between virtual disk image formats?

    - by Jakub Žitný
    There is huge number of different formats for virtual storage files for desktop and server purposes (vmdk, qcow2, vdi, vdk, etc.). I'm writing a little script for manipulating them and would like the script to be able to distinguish between them. Of course, it can be done via extension, but I want this to be more reliable. I tried commands file or qemu-img, but the results are not quite clear. Any idea improving my methods?

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  • Disk Management Hidden Partitions - PTEDIT32

    - by Kairan
    Apparently PTEDIT32 can edit partitions, making partitions that are hidden, visible. My purpose is to take a hidden partition on a toshiba laptop (the recovery partition) and copy it as my hard drive is beginning to fail. My problem, is that I cannot find PTEDIT32 documentation on what i want to change the partition # to. I know that changing it from 27 to 7 would change it from hidden to active - but if I set it to active, I am worried it will try to launch the recovery mode (as that is what it did on a previous laptop) Here is the link I used for instructions to do this on a previous laptop: Hidden_Recovery_Link_Site So how to make the hidden partition visible without it actually RUNNING the recovery mode?

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  • Windows 7 Home Premium Disk Partitioning

    - by Tamir
    Hi all, I'm having new Dell studio 1749 laptop with one partition (C). there is another backup partition - hidden. How can I create new partition for all the files and the other stuff to be seperated from the C partition? I'm looking for a clean and simple way to do it, thanks!

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  • Portable hard disk with write-protect switch

    - by Wadih M.
    Hi, I'm looking for portable hard disks that have a physical switch (with or without key) to make it "read only" to prevent modification. Is there a particular keyword I should look for that designate those types of drives, or models I can look into, anything that can guide me will help. Thanks

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  • Bitlocker Repair Tool for windows 7 Ultimate

    - by user44212
    I have just enabled bitlocker using a flash drive without TPM on windows 7 Ultimate 64 bit. Just to be prepared - is there any way I can recover data from an encrypted volume in Windows 7 ultimate. I found links for BitLocker Repair Tool to help recover data from an encrypted volume for windows vista and windows 2008 here http://support.microsoft.com/kb/928201 but did not find anything on microsoft for windows 7. But did not find any for windows 7 Ultimate.

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  • KeePass: use a key file or a regular password?

    - by RCIX
    I'm setting up a KeePass database and it offers the ability to use a key file, which it says is more secure because it can use a longer and more complex password but is easier to break because you only need the key file to open the database. I'll only be using the key file on 2 computers (one desktop and one laptop), wo which is the best option? Note that it's definitely more appealing to use the key file for me because i have a hard time remembering anything close to a random password.

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  • Can I rely on S3 to keep my data secure?

    - by Jamie Hale
    I want to back up sensitive personal data to S3 via an rsync-style interface. I'm currently using s3cmd - a great tool - but it doesn't yet support encrypted syncs. This means that while my data is encrypted (via SSL) during transfer, it's stored on their end unencrypted. I want to know if this is a big deal. The S3 FAQ says "Amazon S3 uses proven cryptographic methods to authenticate users... If you would like extra security, there is no restriction on encrypting your data before storing it in Amazon S3." Why would I like extra security? Is there some way my buckets could be opened to prying eyes without my knowing? Or are they just trying to save you when you accidentally change your ACLs and make your buckets world-readable?

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  • Trying to delete directory with "rm -rf", but get message that it's not empty

    - by Ben Hocking
    I've tried deleting a directory using "rm -rf" and I'm getting the message "Directory not empty": Bens-MacBook-Pro:please benjaminhocking$ ls -lart empty_directory/ total 16 drwxr-xr-x 5 benjaminhocking staff 170 Aug 27 14:46 . drwxr-xr-x 3 benjaminhocking staff 102 Aug 27 15:28 .. Bens-MacBook-Pro:please benjaminhocking$ rm -rf empty_directory/ rm: empty_directory/: Directory not empty Bens-MacBook-Pro:please benjaminhocking$ rmdir empty_directory/ rmdir: empty_directory/: Directory not empty If I try the same thing using Finder (dragging the folder to the Trash), I get the message The operation can’t be completed because the item “empty_directory” is in use. I've tried doing xattr -d com.apple.quarantine, purely out of superstition, but it did no good. A probably important piece of context is that this directory was initially in a directory that should've been deleted by a "make clean" command I issued prior to Terminal locking up on me, after which a little over half of the other programs I had running also locked up, including Skype, and eventually the OS itself. I ended up having to reboot the computer by pressing and holding the power key. Edit to add: Another important piece of information I left off was that this was happening in an encrypted folder à la encfs. I was able to track down the corresponding folder in the encrypted side of things and delete it there. I still don't know why I couldn't do it from the decrypted side of things like I normally do. I'll leave this unanswered for now in case anyone has a good answer for that.

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  • Using a non-validated SED on a Dell R720

    - by a coder
    We were given a Dell R720 a couple years ago, and the machine currently has standard 300GB 3.5" SAS 15k drives. Our RAID controller is a Perc H710. We need to update our disks to FIPS 140-2 certified SED. According to Dell, they have only one tested/validated FIPS SED for this machine/controller, but it is a 7200rpm 3.5" unit. I'm showing that Dell offers a 600GB 15k FIPS SED in 3.5" configuration (Dell part number 342-0605), but they say they haven't validated or tested to know if it works. They informed us that we would not void our warranty in using this non-validated drive. How likely is it that our R720 with H710 controller will work with the non-validated drive? Are there significant differences in how drive manufacturers build SED that would prevent them from working consistently across different controllers?

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  • Encrypting traffic on remote end of SSH tunnel

    - by Aaron
    Using an example of someone connecting to a VPS, an SSH tunnel will encrypt any traffic coming from the user to the VPS. Once it reaches the VPS network, the traffic is not encrypted and is easily sniffable by network administrators on that particular network. (am I understanding all that correctly?) Is there a way to have the traffic encrypted on both ends so that neither side is susceptible to packet sniffing to reveal what kind of data/traffic/protocol is being transmitted?

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  • NVRAM for journals on Linux?

    - by symcbean
    I've been thinking about ways of speeding up disk I/O, and one of the bottlenecks I keep coming back to is the journal. There's an obvious benefit to using an SSD for the journal - over and above just write caching unless of course I just disable the journal with the write cache (after all devicemapper doesn't seem to support barriers). In order to get the benefits from using a BB write cache on the controller, then I'd need to disable journalling - but then the OS should try to fsck the system after an outage. Of course if the OS knows what's in the batter-backed memory then it could use it as the journal - but that means it must be exposed as a block device and only be under the control of the operating system. However I've not been able to find a suitable low-cost device (no, write-levelling for Flash is not adequate for a journal, at least one which uses Smartmedia). While there's no end of flash devices, disk/array controllers with BB write caches, so far I've not found anything which just gives me non-volatile memory addressable as a block storage device.

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  • unable to decrypt certain files with secret key pgp 6.5.8, any advice?

    - by pythonian29033
    Ok so I do some stuff for a client of ours that requires me to decrypt some of their suppliers messages, the thing is, something weird happened the other day and I can only decrypt some files with an old decryption script, but for certain files I get the error: "Message is encrypted. Cannot decrypt message. It can only be decrypted by: 2048 bits, Key ID 98627E12, Created 2000-03-02 "Other Guy "" as you can see, the key is ancient and I was still 9years old when it was created, so I have know idea who this "Other Guy" is. . .and I can't understand why I'm able to decrypt some of the supplier's files with the decryption script, but for others it fails. PS: the supplier only uses one public key, so this should work for all the files, any advice?

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  • Computer cannot detect hard disk

    - by Nrew
    Details: BIOS: AMI Bios, set primary master to Auto OS: Windows XP Sp2 Memory: 384 Mb Processor: Pentium 3 yeah this one is really very old. And some of the capacitors in the motherboard are already bulging. It detected the hdd yesterday when were trying to fix it and install xp. But today it cannot boot and said: Boot failure. What can you suggest that I would do to revive this old machine. What would be the problem, is it the hdd, the ide cable or the motherboard.

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  • Generate or update a PDF to include an encrypted, hidden watermark?

    - by Dave Jarvis
    Background Using LaTeX to write a book. When a user purchases the book, the PDF will be generated automatically. Problem The PDF should have a watermark that includes the person's name and contact information. Question What software meets the following criteria: Applies encrypted, invisible watermarks to a PDF Open Source Platform independent (Linux, Windows) Fast (marks a 200 page PDF in under 1 second) Batch processing (exclusively command-line driven) Collusion-attack resistant Non-fragile (e.g., PDF - EPS - PDF still contains the watermark) Well documented (shows example usages) Ideas & Resources Some thoughts and findings: Natural language processing (NLP) watermarks. Apply steganography on a randomly selected image. http://openstego.sourceforge.net/cmdline.html The problem with NLP is that grammatical errors can be introduced. The problem with steganography is that the images are sourced from an image cache, and so recreating that cache with watermarked images will impart a delay when generating the PDF (I could just delete one image from the cache, but that's not an elegant solution). Thank you!

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  • Configured MySQL for SSL , but SLL is still not in use..!

    - by Sunrays
    I configured SSL for MySQL using the following script. #!/bin/bash # mkdir -p /root/abc/ssl_certs cd /root/abc/ssl_certs # echo "--> 1. Create CA cert, private key" openssl genrsa 2048 > ca-key.pem echo "--> 2. Create CA cert, certificate" openssl req -new -x509 -nodes -days 1000 -key ca-key.pem > ca-cert.pem echo "--> 3. Create Server certificate, key" openssl req -newkey rsa:2048 -days 1000 -nodes -keyout server-key.pem > server-req.pem echo "--> 4. Create Server certificate, cert" openssl x509 -req -in server-req.pem -days 1000 -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 > server-cert.pem echo "" echo echo "" echo "--> 5. Create client certificate, key. Use DIFFERENT common name then server!!!!" echo "" openssl req -newkey rsa:2048 -days 1000 -nodes -keyout client-key.pem > client-req.pem echo "6. Create client certificate, cert" openssl x509 -req -in client-req.pem -days 1000 -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 > client-cert.pem exit 0 The following files were created: ca-key.pem ca-cert.pem server-req.pem server-key.pem server-cert.pem client-req.pem client-key.pem client-cert.pem Then I combined server-cert.pem and client-cert.pem into ca.pem (I read in a post to do so..) I created a ssl user in MySQL: GRANT ALL ON *.* to sslsuer@hostname IDENTIFIED BY 'pwd' REQUIRE SSL; Next I added the following in my.cnf [mysqld] ssl-ca = /root/abc/ssl_certs/ca.pem ssl-cert = /root/abc/ssl_certs/server-cert.pem ssl-key = /root/abc/ssl_certs/server-key.pem After restarting the server,I connected to mysql but SSL was still not in use :( mysql -u ssluser -p SSL: Not in use Even the have_ssl parameter was still showing disabled.. :( mysql> show variables like '%ssl%'; +---------------+---------------------------------------------+ | Variable_name | Value | +---------------+---------------------------------------------+ | have_openssl | DISABLED | | have_ssl | DISABLED | | ssl_ca | /root/abc/ssl_certs/ca.pem | | ssl_capath | | | ssl_cert | /root/abc/ssl_certs/server-cert.pem | | ssl_cipher | | | ssl_key | /root/abc/ssl_certs/server-key.pem | +---------------+---------------------------------------------+ Have I missed any step, or whats wrong.. Answers with missed steps in detail will be highly appreciated..

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  • How to generate user-specific PDF with encrypted hidden watermark?

    - by Dave Jarvis
    Background Using LaTeX to write a book. When a user purchases the book, the PDF will be generated automatically. Problem The PDF should have a watermark that includes the person's name and contact information. Question What software meets the following criteria: Applies encrypted, undetectable watermarks to a PDF Open Source Platform independent (Linux, Windows) Fast (marks a 200 page PDF in under 1 second) Batch processing (exclusively command-line driven) Collusion-attack resistant Non-fragile (e.g., PDF - EPS - PDF still contains the watermark) Well documented (shows example usages) Ideas & Resources Some thoughts and findings: Natural language processing (NLP) watermarks. Apply steganography on a randomly selected image. http://openstego.sourceforge.net/cmdline.html The problem with NLP is that grammatical errors can be introduced. The problem with steganography is that the images are sourced from an image cache, and so recreating that cache with watermarked images will impart a delay when generating the PDF (I could just delete one image from the cache, but that's not an elegant solution). Thank you!

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  • Suggestion for boot manager in external hard disk

    - by Korrupzion
    Hi, I just bought an 1TB External Hard drive with eSATA, USB, FW400/800 (LaCie if you are interested). I already put the windows 7 installation in a FAT32 active partition so i can plug the HDD via USB, since my notebook or other computers doesn't support boot via eSATA commonly, and it works. Now i want to do more partitions so i'm looking for a way to have a boot manager as active partitions that allows me to boot from different partitions in my HDD (win7, ubuntu installations for example) I want to know if you know any software to do this or you already have this system. Thanks and sorry i have too many grammar errors because english is not my native language :)

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