File Encryption

I am using full-disk encryption pretty much set up like described in this guide.

I works nicely except for the fact that I am bad at typing passwords. So occasionally I am typing it wrong and grub drops me to a rescue shell.

I then hit ctrl-alt-del to reboot, which feels unclean and is a bit annoying as it takes a couple of seconds. So I was wondering if there was a cleaner way, such as configuring grub to allow multiple attempts or something similar.

Obviously a minor issue, but if anyone knows a little trick please share it.

I have read about GPG-encryption on the German, English and the Dutch wikipedia and I cannot make sense of it.

So can please someone explain the inner workings of GPG. And by that I don't mean how to make a key. The general idea of it.

Something like: there is Bob and John. Bob wants to send a mail to John in a safe way. He uses GPG for it. And then the story about public and private keys etc. As though I am five years old.

I need to make following Project on Image Watermarking, need suggestions of maximum people how to start this.
1.) My project shall include a Host file of size(M*M), which will hide a watermark of size(N*N) (may be a grayscale, text or true color image).
2.) Need to encrypt watermark( Suggestions are needed whether use selective encryption, ciphering), where to get maximum help and how to implement this.
3.) Which algorithm I should prefer to encrypt watermark and why?????
4.) Ideas to make Key for Encryption.
5.) Idea to embedd the watermark in host image( Either to use DWT,SVD,DCT,Fibonacci Haar Wavelet) and in which band???????????
6.) What will I loose or gain on embedding in lower frequency bands and higher frequency subbands.
7) How I can make watermark Robust to Rotation, Scaling, Croping, Resizing. Ideas to generate such code.
8.) What performance parameters will decide my robustness.
9.) How to Extract watermark and will they be extracted after attacking the watermarked image.
I will be grateful, if you give your valuable suggestions.

Hello, does anyone knows a way to run a .bat file in windows that depends on an event in Linux? I already have a free communication between both machines, with puttyGen, but now i have to activate a .bat file in windows when a directory in linux contains files. By crontab it will be watching that directory, and at the moment that a file arrives, the .bat file that is in windows has to fire.

Thanks for the information.

Hello sir, i want your help to know that in order to add security to ZRP which are the files where we have to make the modifications for encryption, digital signature etc.. as i have very less knowledge regarding so plz help me from the basic level as what should be done in SZRP.

Using a Raspberry Pi w/ Debian

Read the manual and several "how-to"s and am getting nowhere

vsftp is running and making a log file. I can get to the Pi with putty or SAMBA

Ultimately want to be able to both(I) ftp in under the "pi" user to access files remotely and (II) have people sending me huge files ftp them in anonymously

Have tried (I) the ftp client in Windows 7 Internet explorer 11, (ii) the ftp client in the Windows 7 "map network drive" UI, and (iii) ES file explorer on my Android phone.

The android phone tells me there is no server there. Windows 7 gets no password challenge, gives no error indication, but does nothing useful. The vsftpd log file shows some attempt by the Windows machine, nothing for the Android.

Config file and log file attached.

The Android is trying to use port 21, the config file mentions something about port 20. Which ports do I need to forward in my router to enable remote access?

Any help appreciated.

Thanks. Jonathan

I have a dual boot laptop with debian stable & Windows 7.

The HD partitions a
sda1: NTFS for W7
sda2: FAT32 (currently unused)
sda3: linux /boot
sda4: linux ext4, which is LVM with encryption

I've re-installed W7 and now need to recover the MBR & grub menu.

I've booted with the netinst usb in rescue mode, but it fails to mount the root partition /sda4:
"An error occured while mounting the device you entered for your root file system (/dev/sda4) on /target"

and /var/syslog shows:
Code:

rescue-mode: selected root device '/dev/sda4'
umount: cant umount /target: Invalid argument
isofs_fill_super: bread failed, dev=sda4, iso_blknum=16, block=32
EXT2-fs (sda4): error: unable to readsuperblock
EXT3-fs (sda4): error: unable to readsuperblock
rescue: mount: mounting /dev/sda4 on /target failed: Invalid argument

So it seems like something is wrong with the mount command?

Would appreciate suggestions how to solve this.

Thanks

I've worked with Linux in the past, but mostly Windows. Perhaps someone can explain what I am seeing. This isn't a Linux OS, but Tomcat running under Windows. I'm thinking Linux rules apply here, but if this is the wrong forum, I apologize in advance.

I've got an app that runs under Tomcat. I needed to modify an XML config file to change a variable. The path was \app\tomcat\webapps\asset-manager-web\WEB-INF\am\conf\settings. The file was configParams.xml.

To protect myself from messing things up, I first made a copy of configParams.xml and named it configParams-ORIG.xml. I left this in the same folder as the file I was going to edit. I made the required edits and restarted the application service. The app never recognized the changes. Finally, I moved the configParams-ORIG.xml file to another folder, restarted, and everything worked.

Can someone explain why this is? I do this in Windows all the time. Why does having that original file, renamed, in the same folder cause a problem?

I figured out there is a possibility that I can change the algorithm in the built-in cryptor, in the openSUSE install. The default algo loaded is AES and I want to change it to Twofish. I saw a post in gentoo's forums where it seems to be possible, although I don't know if I can do the graphic install after it nor how to procceed.

The command would be similar to:

Code:

cryptsetup -y --cipher twofish-cbc-essiv:sha512 --key-size 256 luksFormat /dev/sda3

What should I do? How to install the system afterwards? (with graphical install). Also, is there a way to check the encryption description after the system install?

I want to install openSUSE 12.3

Guys,
Is there a way to change the font color, within my local terminal, every time I SSH into another machine?

I know I can set it up on each individual remote machine by adding something to my bashrc file. But, I ssh into 50 or so machines and would prefer not to ssh into each individual one. There may not be another way though?

TIA!