Saturday, May 17, 2008

mid exam goosebumps


hiii all.I just love blogging.Here I m able to confess anything .It is like an open mirror.Since the moment I am into blogging I feel like having a friend to whom I can speak out anything with few exceptions though which I manage to bring in as some facts cannot be published on internet,Hey guys do u know that I m writing this post in the midst of my 4th semester exams.Really I couldn't stop myself as our exams are going to be over by Monday and then I will be on my way to Joda --a mining city in Keonjhar district in orissa.This city is famous for iron ores .Elephants may come across you while travelling.Really I m not joking.Elephants come across the roads and block the vehicles often but I have never seen them harming anybody.They take away offered foods along with them while verifying each and every vehicle on the highway.Actually their jungles are being cut for mining purposes, so where will they go?Believe me the city is heavily polluted due to mining activities by industries.There are hundreds of big industries in the city.There was a day when it was pretty dangerous during night near the jungles but now the city is overcrowded with outsiders.
The price of commodities are very high there and there is no good living place as all are filled out with smoke.But venture out of Joda and you will find about more than 15 tourist places .Beautiful jungles and rivers.The nearby villages are full of tribal people and now they are suffering from the bad impact of industrialization.So ten days there as my brother is an Engineer out there in Tata sponge plant.I will undergo some industrial training as I have planned.Then I am returning to Bhubaneswar ,city of temples,city of comfort for me, the capital of orissa for summer training.I am planning to do some advanced java classes along with dot net classes.Actually we are a group of friends who are planning for some outing in the summer to some nearby place which will give us a nice break from this graduation rush.Then after 45 days of holidays I have to be back for my 3rd year and I am excited about the fact that we will be super seniors by then waiting eagerly for new people in the campus.Hoping to do some friendly ragging of the juniors but the principal seems to be very strict this time.It is time for dinner and I m feeling very hungry irrespective of the bad smell of our canteen in the college.Anyways appetite makes one forget everything like I have forgotten all tastes.

Sunday, April 13, 2008

Digital signature -A new era of secure economic transactions.


The digital signature is the most fascinating application of cryptography these days and as per my intuition, it is going to be utilized and developed all over the world in a few more years. We were having a techfest called ADVAITA this year.I decided to go over there and present a paper with my branch colleague Sumeet. Thinking of some good papers I had the idea of this paper on my mind. At first, I was not at all confident of getting success because being in 4th Sem means there is no way of having knowledge about cryptography, still we managed to mug up some of the cryptographic algorithms alongside loads of research in the development activities in this area. Luckily we were not asked any kinda questions about core cryptographic algorithms; that is how we had a narrow escape. So, after all, we managed to get the second position but what I feel good at is I got some special kind of confidence after presenting the paper due to the fact that we were able to present our assessments and analysis. It is not about winning something but the place is for proving yourself before nobody but yourself only. Below follows the abstract of our paper.


Digital signature –The new era of secure economic transactions

There are many ways of applying cryptography and one of the many is “Digital signature” which is also known as “advanced electronic signature”. The person who is signing a document can see his signature as an ordinary signature whereas, his signature is invisible as a digital signature. This is a basic difference between an ordinary signature and a digital signature. This paper presents you an overview of the digital signature concept.
Digital signatures can be used to authenticate the source of messages. Authentication provides the means of ensuring the identity of a user; a digital time stamp bound to information can establish when it was created; the digital signature itself can be used to prove who sent a document, and prevent the originator repudiating ownership. When ownership of a digital signature secret key is bound to a specific user, a valid signature shows that the message was sent by that user. The importance of high confidence in sender authenticity is especially obvious in a financial context. If a message is digitally signed, any change in the message will invalidate the signature. Furthermore, there is no efficient way to modify a message and its signature to produce a new message with a valid signature, because this is still considered to be computationally infeasible by most cryptographic hash functions.
So digital signature thus helps cryptography to prove itself. Assistance is required from the law to help it attain the functional element of non-repudiation. Once non-repudiation has been achieved, then and only then, can electronic commerce be expected for any constructive purposes?