Free MIT Open Courseware for network Security enthusiasts.

As most of us are aware that MIT OCW or the Open Course ware has been of great help for quite a good period of time in order to get the maximum out of the knowledge that the institution offers.

Thank me later 😉

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Inside the WhatsApp encryption system !

Yaay ! Cheers to Facebook for bringing out encryption in WhatsApp messages. It was like in my 2nd year of undergrad where me and my friend Vaibhav researched on how to hack into whatsapp and read other peoples messages. Since at that time, WhatsApp didn’t have any encryption. All your messages till yesterday were sent in open text format. Yes, the text format of notepad.

Governments and other spying agencies used to enjoy our chats without much effort. Infact anyone could read your message if you are connected with a Wi -Fi network from his mobile phone. Yes, it’s possible but we not be going over there :p

No worries now, since we have got encryption. Woo Hoo !!

Now what happens to our messages. As WhatsApp have already told you that it’s an end to end encryption which means that no one can intercept your messages at any cost.

Well, the whole encryption saga for WhatsApp started around mid 2014. Open Whisper systems developed this encryption for WhatsApp (No, not Facebook devs). Open Whisper systems uses it’s open source software called TextSecure. It’s owned by Twitter by the way. Anyone can use this software if the developer is willing to put some security in his chatting application.

TextSecure uses a number of algorithms, obviously. The primitive or the base algorithms that are used are CURVE25519, AES256, HMAC-SHA256.  Am sure all the engineering Computer Science undergrads have heard the terms AES and HMAC-SHA.

Well from these primitives, the double ratchet algorithm comes into place along with a 3DH Handshake. Normally, the AES is said to be one of the most toughest encryptions. So you can imagine the level of security given to your lovely messages now. But one aspect still makes we wonder. TextSecure has been designed not even to expose chats in screenshots. But if your chats are being captured, am sure it must have been tailored.

All we can say is that, go ahead and text worry free. But the threat still loombs. If you have ever read the terms and conditions of WhatsApp, then they indirectly say that they can access all of your texts. Well, that will apply even if you are under encryption. And also, if the government of a particular country wants to keep an eye of their citizens, they might just give the access to it. But consider yourself safe other than these cases :p

Cheers !!

Significance of AMG in Mercedes !

Many of us around here turn heads when a merc passes by. Those distinctive curves, the majestic feel are sure to grab attention in the crowd. As a ametur car enthusiast, i would like to tell you guys something more about these babies. Next time you see a merc, look out for the badge AMG on it.

If you spot one such car, then you are looking at one of the finest machinery ever made by man on this planet. Yes, AMG has an intensive significance, not just like a brand, but the value for its quality engineering. If you are a mechanical engineer, these topics will drool you out for sure.

So what does AMG stand for.

A – Aufrecht

M – Melcher

G – Großaspach

Aufrech and Melcher are the founders of the company. Just like Steve Jobs and Steve Wozniak of Apple. Großaspach is the birth place of Aufrecht. And hence the name, AMG.

Mercedes has a Formula one team also which is managed by our very own favorite F1 driver, Niki Lauda. Every year, 2 distinctive F1 cars are made by the AMG division itself. Through thorough research and development, it takes around 6-8 months to come up with one F1 car engine. Just perfect to go and triumph in the championships.

Well, AMG is a fine tuning division of cars. While every other manufacturer gets its cars fine tuned by third parties, Mercedes has its own. Mercedes-AMG. The engies are made by artists cum engineers. Every engine is just made by one man. One man – One engine – AMG. Every engine of AMG is badged with the signature of the engineer who made it. Only 50 engineers in the world make the AMG engines. You can understand the novelity now.

I can go on praising it but when it comes to quality research and development in cars, Mercedes has a big advantage because of AMG.

Watch this beautiful experiment to demonstrate the build quality of AMG cars by none other than Micheal Schumacher

 

Have a great day ! Keep glued on for more interesting posts ! Cheers !

 

 

There are no great minds !!

There is nothing called as a great mind. Most of the people who pursue the apex aren’t actually great minds. There are only great ideas. An idea is said to be great because it had the potential to break the daily stereotypes, had the potential to break the comfort zone. We have studied about many great minds like people who said that the earth was flat. There were theories that the earth is the center of the universe. Until someone else had to prove it the otherwise. Great minds change, but great ideas don’t.

We could have been still in the blue about gravity if it wasn’t for Sir Issac Newton who gave it a thought about why the apple fell on his head. We may have been in the blue about electricity if it wasn’t for Nikola tesla, Benjamin Franklin who ideated many important concepts . We have been in the blue about small pox if it wasn’t for Edward Jenner who broke barriers and ideated the vaccine.

People tend to create a virtual barrier among themselves and have the fear to ideate. They think that it’s never been done before, so it can never be done in the future. Remember that many so called great minds were proven wrong. We never know that the greatest minds of today who do research worth millions of dollars might be proven wrong in the future. But that doesn’t stop the process of ideating. It’s taking a leap of positivity and belief everyday. A leap for a better idea. A hope.

So never let your imaginations die within your mind. Try do make something out of your creative side. Take the leap of belief and pursue it. Let it be anything. Nothing can be as right as your thinking. Even the world’s most dangerous people took their leap for a negative cause. Why can’t you do it for one small positive purpose ?

There are no great minds. It’s those little silly ideas which make a difference and become great ideas. As Albert Einstein said “If the idea is not absurd in the beginning, then there’s no hope for it.”

Have a ideated day ahead !

 

A magnet with a Single Pole ???

A magnet with a Single Pole ???

monopole magnet

From the basics of physics in magnets, we all have known that magnet has two poles and when its broken up into two pieces , it forms two di-pole magnets. Well thanks to technology, its not anymore like that. Yes, its history now.

Scientists believe that a magnetic mono-pole – a magnet with just one pole should be present. However, there is no physical evidence but a synthetic model has been engineered, giving us an opportunity to explore more.

A magnetic mono-pole, in other words, is like an electron consisting of magnetic charge. Researchers managed to simulate the behavior in an ultra cold material, similar to that of a natural magnetic system.

To achieve such a state, rubidium atoms were cooled to a billionth of a degree above absolute zero

They used one rubidium atom to mimic an electron, and then created the magnetic field of a mono-pole by changing the alignment of rubidium atoms.

The discovery of a natural mono-pole would frame up a key evidence to the Grand Unified Theory which is the greatest goal of physics which deals with….. The four fundamental forces of nature, Electromagnetism, The strong and weak nuclear forces, Gravity.