funny got you that every woman wants to
go over they just put rigs out of the
Hat and of course jets over basically
talk it out but a more fun ways to stoop
and read emails and what’s happened so
so that’s the basic team and of course I
am going to take it to a somewhat higher
plane so can we take them so anyway the
issue of security and secrecy so this
just a little extra this feels right so
here is the carload of Robert trying to
rob something valuable and the other
person trying to hold on to it but this
card will actually analyze what happens
between individuals between nations and
if we conceive of the situation that you
can think of so it’s very generic namely
how do we safeguard our secrets and our
assets against attacks snooping now the
world is growing increasingly digital is
it very clear the need for secure
communications is ever increasing
because they are constantly relying
today we don’t you will think twice
wait before you log into a bank and two
transactions and in that you have to
worry with in the process of your
transaction whether you are unable to
scooping so that somebody can take away
your bank account over whatever being
able to make it hard put cracked so
you’re going to the encryption more and
more elaborate and it doesn’t becomes
truTV tedious to do it like this so you
try a mechanical example your
temperature you put extra these and
springs and so that when you press aide
that’s just something else it will take
something else and it to something else
and it produces an alphabet which is
encryption of a but not very easy to
guess oh so this is all the instructors
were mostly used by a little point and
they use essentially mechanical and
partly electrically the most famous of
them I want to tell you the so-called
genuine encrypted an enigma and those of
you who you are to getting to work you
know known much about the Second World
War the details but it would be of
course we need this Chennithala said two
things which is place here to taste or
not information is any powers solve is
equal to crack the Germans used yet you
know to communicate early where the
positions of the harley tank sitting are
so that will actually plan their warfare
with this secret oh and the other is
practice so they know where their next a
hackathon how many soldiers would be
rewarded so we thank you be bored with
it and this way the Germans were almost
been in the bar because the different
secrets were extremely enough
sexualities secured so here is an enigma
if you are either doing basically like a
typewriter the insert that decorated
there lots of wheels and springs and it
will be any trip the message this one
man ended this dominance of the any word
that is a learned to read and here’s a
picture of game next slide he was the
period cryptography a great
mathematician and computer scientist and
he dropped the core of anyone and after
that the whole time of the war turned
against the Germans because the halides
bring every message and then you exactly
when to expect the attacks and go
prepared and essentially the Second
World War ending to a large measure this
contribution of attitude these are all
showcases the extreme importance of
tutorial then of course a satisfied
between life doing what the horse it
show in those days England is a criminal
offense and so they again two choices
to undergo chemical castration are to be
imprisoned for some larger water type
and itõs chemical castration is so
broken leg is that he don’t know Susan
so this is very very sad case of how
society needlessly interferes in the
personal lives of people no matter how
big that favors their baby and this kind
of Kennedy’s to continue and complete oh
now I just want to give a general
classification of people there are two
kinds one is called the symmetric key
stock photography typically means the
kingdom opens the lock also closed
submitted say I’m keeping with that and
then when this works is that there is a
secret key which two parties that are
communicating was first shared with the
dentist and this should be done in it is
secure fat either send a personal
emissary or somewhere so they can share
their key and after the share their key
they take some message which is called a
plaintext use that key to interpret the
message to send in a not so secure
channel because it’s encrypted even if
somebody over here is it they do know
what to do with it and so the channel
will be not going to secure secure
channels are very expensive bye and now
this one at the other end the person
d complete and this is how the symmetric
key cryptography it works but amazingly
there is nothing worth photography and
this is called a symmetric key that
locks is not the key that Edwards you
want to go that is but I’m title can we
are appealing to you and this is current
public key cryptography so the keys at
large you can just be very careless you
can leave it lying around anywhere
because you know that he is not the key
that opened the lock and then I this is
gone public key guitars and in public
key cryptography such person say two
parties the verb communicating which
will develop each will generate talkies
what is a public key which their freely
and generously distribute to everybody
and one way the private keep it only day
and on only they have to hang on to it
they also have to send it they don’t
have to communicate it and the list of
it being falling into the wrong hands is
highly minimized the idea of this or do
you keep problems mean how does it work
so they’re pop artists each of them I
had created only three legged cable the
horse one user
it’s again and index it and was to only
uses these are her private key you will
pick up the list so this is a very
beautiful and powerful concept able to
come so this is hard means more you have
to do so many manipulations and clearly
the shoe and wine cannot do it so then
we are going to because so let’s see how
classical computers this so I give you a
little bit of a history this is called
IBM 305 rather computer and ducting
which they have to bring in a panel play
just a hard bitch 50s and the hardest
can has to be removing five ND where if
i take my mobile phone its capacity is
several gb so that is how much we are
focused the early days we needed if you
want to take your mobile both of our
this both days later change would have
to use it at a guess force to move it
from one place so many generation is
something very very next so i stopped
mentioning this many generations
the other one the 500 fastest work
suggested to hold recognition from head
I too felt very happy with this
condition but I need up we need to get a
recognition I bet you do something for
me not just a good idea one error flop
meaning you can do thousand billion
computation multiplication gyrations in
one second so if you approximately
india’s population to 1 billion which
means you give thousand operations to
ethnic indian me and what they can to
get their due once again you know what
now in India of the fastest way next
time there are you 12 today there is
this two months ago fastest classical
computer with by China don’t give you
any complications the Chinese orbiting
us is admire the fact
of machine it’s called debut light and
it is 125 better floss and what better
floppies thousand times as powerful as
that cookie with a very clear the white
boggling power of you on such powerful
computers the factorization problem this
it’s too long if you have a thousand 24
honestly what about you thank you is the
several words to factorize one number
there’s more even today the most
powerful computers this factorization
public key cryptography I’d say now I
can put motor mechanics obviously I
cannot generate in viewers of motor
mechanics I’ve been studying this
serious before last 50 years and every
day I realized something new something
when boggling but it is a successful and
this wouldn’t you’d wear a foolish to
spend some time events subject from us
and just a few important ideas of work
quantum mechanics to tell you about
computer screen here poking will be
built and just make it dramatic
transmission to human society what stay
here so you take screen and to cool
things are you the screen here in
victory doors and you asked me to come
from here to the side and okay I can
either go to left or it come to you I
would take the right door it took you
and very hard for me to take both the
troops even harder for me not to take
any lower infant much important again if
you send an editor it gets to the other
place and you can tell repent to may be
either here or be both a is that what’s
the big deal i want to shiny touch and
when you shine a torch photo again is so
bizarre that it will show the day return
things to either on this act of
observing sportster next so what does
this got blue population and also
includes emotional system we again look
genetic or spin take two values in the
addiction for Cutie of quantum mechanics
ever told you you can compare the
spin-up and spin-down to the electronic
in the left or the right door so you can
have it classically the spring roll will
be up or down what are equally the
electron would be in a state which is
course local pollution and it can be
neither one notion they have to make it
in ordinary language if you make any
measurement is either so funny are you
know with some so no the point is that
will just go back works what’s the
significance of think of a classical
computer it is a 10 and a producer
coveted you something else so it wants
to find out of both one and zero a
dispute 140 so do you see in chill it
takes office manager what a mechanically
on that stage of the game and we’re not
going to get that it simultaneously
perform the calculation or so good
bamboo tell you so using oh that’s very
fast particularly so just two
but what you gain exclusive disadvantage
because i have to finally find out what
have been done and if you’re tired
annoyed it will only show another your
master so the question climate here and
so let’s bet he’ll genius to figure out
a way in which the calculation that you
want perform because most likely i will
you very basic flavor it let me read up
on it with your interest rate they said
mechanic’s liens better place so such if
you do that then still you can get some
vandalism much more than in classical
computers by the way tasco computers
because we realize and so forth Admiral
more effective the right weight was 280
for computer soup and load it will all
be segregated mislead calculating so
there is proper Marcus the same is for
into the game and he is now on the way
to building it right so it’s almost in
this talk I am just clicking save us how
the classical computer performs versus
important oh yes if i take the 512 bit
RSA what are the pitch so total
to the 512 which is 10 to the 11 54 so
the putter computer in this case can we
have a fourth of revenge as possible
transparent so you doing this 500 little
bit Allison will be broken and every bad
news did you book after so they are to
shift to a more secure encryption and
that is possible by going to pay
thousand 24k twice 1,050 for emos
sitting is the computer can be 10
million times faster than whiskey so we
see that eventually the quantum
particular pins and eventually this
public key encryption is gonna be
insecure broken by the time and then we
can open forever encryptions in always
something will when you create a next
time and last night future with other
computers reasonable sized computers
meaning all the greatest challenges us
and the benefits are winning whatever
you do there bring a disputed speech to
computerless what we still get token
dreams your friends like even realized
very cool so this you all bnn your own
gene will be net and medicine will be
prescribed they specific you if you take
into account your height your action
babe everything and the aspirin that you
take a lot that happened ik the moment
important because so much computation as
we know that will take us years to maybe
hundreds of years to heal a better
understanding of the biggest event
friday so that we can go through for
freedom money drug designs saw me and
prediction of earthquakes and your slow
is so and so I’m just hoping to separate
top for me the importance of protein for
people to be that our fundamental
understanding of physics that
understanding the top worth
understanding you know elementary
particles which people are always read
right so that certain questions should
know technologies to answer who car will
be answered maybe so that’s the kind of
revolution in the computers can play and
I hope give you any flavor of failure I
have gone to justice the details and
it’s bad enough to check it it is google
it I will consider
thank you [Applause]