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well I have been working on an assigment and it states::
A program has to be developed, and coded in C language, to decipher a document written
in Italian that is encoded using a secret key. The secret key is obtained as random
permutation of all the uppercase letters, lowercase letters, numbers and blank space. As
an example, let us consider the following two strings:
Plain: “ABCDEFGHIJKLMNOPQRSTUVXWYZabcdefghijklmnopqrstuvwxyz0123456789 ”
Code: “BZJ9y0KePWopxYkQlRjhzsaNTFAtM7H6S24fC5mcIgXbnLOq8Uid 3EDv1ruVGw”
The secret key modifies only letters, numbers, and spaces of the original document, while
the remaining characters are left unchanged. The document is stored in a text file whose
length is unknown.
The program has to read the document, find the secret key (which by definition is
unknown; the above table is just an example and it is not the key used for preparing the
sample files available on the web course) using a suitable decoding algorithm, and write
the decoded document to a new text file.
And I know that I have to upload an English dictionary into the program but I don't why it has been asked.(may be not in that statement but I have to dO THAT). My question is , while I can do that program using simple encryption/decryption algorithm then what's the use of uploading the english dictionary in our program? So is there any decryption algorithm that uses a dictionary to decrypt an encrypted file? or can somebody tell me what approach or algorithm should I use to solve that problem???
An early reply (and also authentic one) will be highly appreciated from you.
Thank you guys.
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It appears as if something has screwed up my system volume so that even with my master volume turned down it is loud as hell. The entire volume control is all the way down at the bottom of the slider so that it is either blasting me or it is completely off if I just move the slider up little bit.
Anyone else ever seen this?
I looked around to see if I had any other media players installed that may be screwing the system and I can't seem to locate any. This is my work machine so I tend to keep it pretty pristine.
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A co-worker had a similar problem once. Did you try to uninstall/reinstall the driver? If that does not help, try reinstalling everything related to the Soundmixer.
As for the co-worker: He reinstalled Windows, without success. It turned out to be a broken soundcard.
Cheers,
Sebastian
--
"If it was two men, the non-driver would have challenged the driver to simply crash through the gates. The macho image thing, you know." - Marc Clifton
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Hi, I plan to configure file auditing on windows server 2003. What i just want to know is the security log of each user activity on that file or folder is going to record in the security log of the server or on each user client computer. Thank in advance!!!
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Hi, in my organization there are two server (domain controller and mail server running mdaemon) and other 50 client computer.
I plan to add one more server which is running ISA server as a firewall server. Once I have successfully deploy ISA server I plan to configure the following setting on the domain controller:
1. Install and configure domain controller as DHCP server.
2. Configure DNS on domain controller as AD integrated zone and configure DNS farwarder on DC. Each client will use IP of DC as their primary DNS server.
With the above two purpose, I need everybody to suggest or advice me about any security that might occure of I configure the above two point on DC?
Thank in advance!!!
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"FILES THAT ARE REQUIRED FOR WINDOWS TO RUN PROPERLY HAVE BEEN REPLACED BY UNRECOGNIZED VERSIONS, TO MAINTAIN SYSTEM STABILITY WINDOWS MUST RETRIEVE THE ORIGINAL VERSION OF THE FILES"
The above error is coming open when i access from file in network and other time.
and I installed XP OS is original.
That XP CD was theft. I don't have any other XP CD. and I have that XP version CD key and license agreement how can i solve this problem
Thanks in advance.
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Some antivirus programs generate such messages, so you will have to scan and clean your system(s) as well.
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Hi, my computer is affect with the virus and now it prevent me from startup in safe mode. The virus name w32.sality.ae which is detect by symentic. Does anyone has an expereince to remove and solve this problem?
Thank in advance!!!
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First you do these stuff :--->
1. Disable System Restore .
2. Update the virus definitions.
3. Run a full system scan.
4. Delete any values added to the registry.
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n_nilesh wrote: 4. Delete any values added to the registry.
Thank you very much for your answer. But how could i know which value added to the registry?
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Hi all,
we had a new system which acts as a backup server for all the members in our lab. Its a windows XP x64 system with bunch of shared folders for each member in the lab and it also acts as an FTP server for our lab, Maltab license server and also as Kaspersky admin server. Using SyncBack_NI, we are able to backup our systems regularly and all is fine for a while. All the client systems are windows XP x86 systems and setting up network share of their shared folder, they all are able to backup their systems fine for a couple of days, then the problems starts with windows network sharing, sometimes out of the blue it says access denied and then you need to disconnect and do some nbtstat refreshing and delete all the mountpoints for network shares and then redo all the steps for adding network shares, even then sometimes it still says access denied and sometimes it works for a while and to be honest we are quite tired of using windows network sharing.
So, now we are seriously looking for an alternative for this and get rid of this XP network sharing problems. Except network share access probems on client systems everything else works fine. Currently all the backup files are stored without any compression (as raw files) and users can access their files from backup system normally as they do from their local system. Any ideas/tips please???
thanks,
PKNT
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Save the following to a .reg file
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters]
"autodisconnect"=dword:00000000
Then run it.
It will make the time that XP maintains mountpoints for shares be 0....Get what you need and disconnect. It should help a lot.
the value is F by default (15)
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thanks for the tip, will try it and hoping it will resolve the issue.
PKNT
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Hello all ,
I installed microsoft office 2003 on server machine and I want to share
office 2003 for network users . I notwant to install office 2003 on all the network machine . how can I do this . please describe if possible .
Thanks for this .
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You can use Terminal Server to "share office 2003". However, Terminal Server licencing is a beast. I remember that you'd need one licence for the server and one for every user who is going to be using Office.
Also, you need a powerful machine in order to deal with several users at once. Office is not exactly easy on the resources.
I would always go with the local installation. You can automate the installation process, so why not go that way? And you only need one licence per user.
Cheers,
Sebastian
--
"If it was two men, the non-driver would have challenged the driver to simply crash through the gates. The macho image thing, you know." - Marc Clifton
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Thanks for reply
There is any other solution except Terminal server.
I searched on Google for this , there I found two method for sharing installed software one is "Terminal Server" and another is "Creating DFS root" .
I don't know about "Creating DFS root", is it easy method then Terminal server or
Terminal server is the best way for sharing installed software .
Thank U Very much for Your reply .
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Hi,
I have written code in asp.net to start a application on remote machine. It is working fine. But on remote machine the process is executing in background. How to bring it to foreground ?
Ramesh Sambari
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You can't. You cannot start a user-interactive process on a remote machine, for what I think are obvious reasons.
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*cough* Not entirely true *cough*.
It requires some really arcane logic with the service control manager, and a certain measure of permissions on the target machine, but it can be done. I have a 'remote installer' for a headless machine on one of our products. It copies the install package to the destination machine and then executes it remotely by installing a service that creates an interactive session and runs the install package.
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* cough * it can also be done with PSEXEC, but in either case, 9 out of 10 reaons people come up with to justify doing something like this are crap. It's just too easily abused and I don't/won't support it.
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Dave Kreskowiak wrote: 9 out of 10 reaons people come up with to justify doing something like this are crap. It's just too easily abused
Agreed.
Dave Kreskowiak wrote: I don't/won't support it
I wish I had the freedom to make that choice 
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Hello all ,
Can you help me for a nice software firewall ,which is totally free and batter for a small network. Please give me the name of that firewall or Link of that web site .
Thanks for this .
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Perhaps you should check out the free Comodo products[^].
Best Wishes,
-David Delaune
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