Ever wondered what keeps our e-mails as safe sealed envelopes rather than postcards that anybody can read ?(asssuming of course that TRANSLTR- the ultimate codebreaker from Dan Brown’s Digital Fortress doesn’t exist)

Here’s a little something about encryption and decryption algorithms…

The encryption of original data(plaintext) into its coded version(cipher text) through key based mechanism takes place using an algorithm and a key.

The algorithm is a set of rules that defines the encryption method from plaintext to ciphertext.A key is exactly what a key is – the specific combination of characters that helps to decrypt the message.There are mainly two types of algorithms:

• Symmetric – The same key is used for encryption as well as decryption.
• Asymmetric – A public key is used to encrypt the data and a private key is used to to decrypt it.This is the key used for encryption of our e-mails.

For example, if Mr. X wants to send a message to Mr.Y, then he simply looks at Mr.Y’s public key and uses it to code the message into plaintext and sends it to him.Mr.Y uses his private key to decrypt the message.Thias ensures that the message is not understood by a third party even if it is intercepted through some means.

The process also works the other way round.ie.Mr.Y can use his private key to encrypt a message and send it to Mr.X which he can be decoded using Mr.Y’s public key.Although this is less safe as compared to the earlier method it proves to Mr.X that Mr.Y is the real sender of the data.The most popular asymmetric algorithm used today is RSA(Rivest,Shamir and Adleman – its designers)

P.S Hope this gave all of you some food for thought…all these days I’ve been spellbound by Dan Brown’s genius once again having been busy reading Digital Fortress, which has left some questions unanswered…here’s one for all you ace programmers out there…Does a rotation cleartext algorithm really exist, and if it does how exactly does it work?

Nice Article though slightly ‘anti teachers’

http://youthcurry.blogspot.com/2005/02/last-obscene-day-of-school.html

Read!

We have Web-Designing assignments, which can be fulfilled on part-time basis, say 6 to 10 hours/ week only.
Work is primarily HTML based catalog pages, at a later stage to be integrated with shopping carts or so.

Anybody willing pl contact-
SHAILEN MITTAL (OR VISHAL KUMAR)
Phone 51665903

Thanks,
SHAILEN MITTAL
AAFFREEN India

Wishing my dear Exun Members – Best of Luck

See you after exams – on the blog/in the school

Type “about:config” in your FireFox address bar.
The settings you’re looking for are:

1.) network.http.pipelining
2.) network.http.pipelining.firstrequest
3.) network.http.pipelining.maxrequests
4.) network.http.proxy.pipelining
5.) nglayout.ititialpaint.delay

Set #1, #2, and #4 to “true”. Set #3 to a high number, like 32. Set #5 to 0.
(This works for broadband , i am not sure of dialups)

Doortouniverse

That is one of the most famousest of headlines going on about the recent announcement made by Mr. Gates concerning Internet Explorer 7, which is going to be released earlier than expected (this year) and not glued together with a copy of the next Windows. All these days Firefox had been tickling Microsoft’s belly, gaining a respectable (actually it’s more like “astonishing” if you consider the short time it took) five percent of the market. Opera of course had never been able to capture any market share mostly due to its not being free and partly due to its not being all that great in any case, and so for Opera nothing will change – its tiny number of faithful users will probably weather the IE7 flood. Anyway, for Firefox IE7 can be disastrous unless they come up with FF2 soon with something awesomely great, including even faster launch times, all security issues quenched, the updating mechanism bettered and support for things like ActiveX, which is… to be honest… asking a little too much of them, but this is what is required. Plus there are IE-specific sites, especially some banking sites, which simply deny entrance to Firefox. But in the end, Firefox can’t cater to those sites which have been designed so that they look good only in IE, by adjusting their code to match IE’s idiosyncrasies.

To compete, FireFox needs to continuously provide the competitive edge and fast. The sleeping giant has awakened. The hammer shall fall.

–Karan

PS: IE7 will be only for Windows XP SP2

On behalf of ExunClan, I wish all the best to Exun Batch of 2004-2005 for Board Examinations.
It has been a great year for Exun – Winning Inter Schools, Organising the Big One – Exun 2004, Starting of the Blog Culture …. We wish this year to be the most successful academic year too.

So long, and thanks for EVERYTHING….

– on behalf of the Exun Batch of 2005

Hello,

This is regarding a humorous, if not amazingly funny advertisement related to the Macintosh computers.

A True Mac Ad

Cheers.