 |
 |
 |
|
|
| |
|
|
| |
| |
| |
|
|
|
| |
| |
|
|
At
Microsoft India Development
Center our teams develop
strategic products for Microsoft
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
| |
|
|
|
| |
|
|
| |
|
 |
|
|
| IIT Delhi |
|
|
I am a code4bill intern at MSRI .My mentor is Venkie
and work on the problem of software protection. |
|
|
|
|
| I
am doing Btech Computer Science and Engineering from IIT
Delhi and I'm presently in my final year . I did my schooling
from Delhi Public School , New Delhi .My research interests
include graph algorithms and networks . Few of my main
projects are "developing a personal tracking system
using bluetooth technology" , "A drawing tool
for Delhi bus routes" . In the future I plan to work
for sometime in a research lab and then do my post graduation. |
| |
| I am the recipient
of the Dhirubhai Ambani scholarship for
excellence in academics .I am also interested in astronomy
. I have been a national finalist in National Astronomy
Olympiad held in year 2000 & 2001.I was the national
finalist in “Red Rover Goes to Mars”
organized by NASA & ISRO .Needless to say I'm a self
confessed geek and enjoy problem solving .I have got numerous
awards in Maths and Physics competitions held at regional
and all-India levels .My interests lie in watching movies, outdoor
games and observing people. |
| |
| The code4bill experience
has been truly great !!! . The work environment at MSR
is amazing . What really impresses me is the flexible
work timings and importance given to every person irrespective
of his position |
| |
| There are no coding
guidelines and lots of freedom . Above all pantry food
is nice and there are also good indoor games . |
| |
| I am known by various
names but I guess “Kunal” will be fine. |
| |
| My project goal is
to make a software protection tool which would make binaries
difficult to reverse engineer and crack . |
| |
| Consider the following
common situation . A software company takes great pains
to develop a software .The company then distributes the
executable of the software and a key to the users who
have paid for the software. The company wants the following
conditions to be met :- |
| |
| a) |
A miscreant buys the code and runs it on his machine
on the inputs of his choice . The company wants
that the miscreant should not be able to reverse
engineer the code . From the execution trace of
the program an miscreant should not be able to learn
anything useful except for the input/output relationships. |
| b) |
A miscreant should not be able to develop a crack
for the program i.e. the program should be tamper
proof and should not run without a key . |
|
| |
| It should be obvious
that the above situation has wide ranging applications
from digital rights management to protection from viruses
which attack fixed memory addresses. |
| |
| So we would be using
clever data structure tricks to move data around ,
randomize things and do whatever we can to outsmart the
hacker . There is a saying that “there exists no program
which cannot be cracked or reverse engineered“ . We
would like to change this saying. |
| |
| 1. |
BioBox : The project involved building
a biocluster grid by integrating ROCKS architecture
with BioBox. Project was sponsored by Sun MicroSystems |
| 2. |
Made a face recognition module
using SVD techniques |
| 3. |
Made
a mini-prolog interpreter in PROLOG. |
| 4. |
Implemented
an engineering drawing package
which could generate projections on any cross section
or cutting plane once an isometric or 3D object
model was given as input |
| 5. |
Made a search engine based on the
technique of Latent Semantic Analysis |
|
| |
| I can be contacted
via email . I would also be active in the Code4Bill forum
. So catch u there !!! |
| kunalrajvanshi@cse.iitd.ernet.in |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
| |
| |
|
|
| |
| |
| Here
are some of the questions that the code4bill contestants
answered. How about trying your hand at them? |
| • |
Multiply
14332 represented in base -7 with 16430 represented
in base -8 and represent the output in base -9. |
| • |
An array
contains 9 occurrences of 0s, 8 occurrences of 1s and
7 occurrences of 2s in any order. The array is to be
sorted using only swap operations. What is the minimum
number of swaps needed in the worst case to sort the
array? |
| • |
You are given an infinite number of cookie boxes containing either 6, 9 or 400 cookies. You are allowed to use these boxes in any combination so desired. What is the maximum number of cookies that you cannot give out using the above boxes? |
|
|
|
|
|
|
|
| |
|
|
| |
| |
|
|
| |
|
|
|
|
|
