Slock ethereum cryptogram
Mike Rosulek left and Attila Yavuz rightassistant professors of computer science in the College of Engineering at Oregon State University, research better ways of keeping our data safe from hackers. The age of Big Data and cloud computing has created greater demand for advanced cryptography.
To store data on the cloud safely it must be encrypted; in order to use the data it needs to be slock ethereum cryptogram, at which point it becomes vulnerable to attacks. Professors Mike Rosulek and Attila Yavuz are finding new ways to perform operations on encrypted data without leaking critical information. Professor Glencora Slock ethereum cryptogram teaches workshops and a new class on personal computer security to empower people to protect their own data.
With community organizer Michele Charrete, she explains why people slock ethereum cryptogram be concerned about security and how to use tools encrypting email and anonymous web browsing. What slock ethereum cryptogram you do during the war? I worked in a radio factory. What did you really do during the war? Are you paying attention? That clip is from the Imitation Game. More than 70 years later, as our dependence on the internet and cloud computing escalates, cryptography is no less important.
The hero in the imitation game was Alan Turing, a British mathematician who is known as the founder of computer science. He was pretty passionate about his work too. Everyone thinks Enigma is unbreakable. Well, that was my question: I say that as someone who… I think I understand cryptography, so maybe it is not so mysterious to me. Not that we are out there fighting a bad guy, but that we can do amazing things.
If you have ever solved cryptogram puzzle you already know one method of encryption called a substitution cipher, in which each letter is replaced with another letter or number.
Another type of encryption is a permutation cipher in which the position of the letters are rearranged. Pretty much all of cryptography is built on those small low level operations of scrambling the data.
But first we will talk to another cryptographic researcher. So, you can see why I had him introduce himself. Attila is from Turkey. Slock ethereum cryptogram fact he grew up very close to Troy.
Which is fitting, since the Trojan horse is an iconic symbol for computer security. Sure, for instance, one of the important paradigm that is coming today is Internet of Things and systems.
For instance, consider about your pacemaker, slock ethereum cryptogram home devices — millions of sensors embedded everywhere — smart airports. All these systems continues the 24 hour, seven days, collect data to improve their processes to improve our lives.
They want to reach these data for marketing purpose or there could be much more evil purposes. And therefore it is our responsibility to protect these data in such a way that first, it will not fall into bad hands, and second, while we protect we do not want to disrupt the properties of data science. So, the last part you said: So, slock ethereum cryptogram instance, we could use traditional cryptographic techniques such as encryption to encrypt our data and store it on the servers in this way.
We collect data, use traditional encryption, and store it. This would provide a reasonable amount of security, but once you do that… now, if you want to access these data to analyze — machine learning and data mining techniques on it, which are very important for data sciences. We could not slock ethereum cryptogram this with traditional encryption techniques.
Now my job, one of the important aspects of my job, is to fill this research gap in which we both achieve slock ethereum cryptogram and security and data analytics at the same time.
How this purpose can be achieved? For instance, one concrete way that we have published just the previous year is to use searchable encryption. So, as the slock ethereum cryptogram suggests, and sometimes people see this as slock ethereum cryptogram dilemma, is that once the data is encrypted, in theory, it should leak no information. And if no information is leaked, how could you search on it?
So the objective of my research, which is actually jointly performed with Robert Bosch company, is that, while we encrypt data we create such a system that we leak very little amount of information to enable only search functionality but no other information is being leaked. But in this case, performance of our search, accuracy of our search and the information that is being slock ethereum cryptogram poses an important trade-off.
So art of searchable encryption and science of searchable encryption is to identify correct trade-off for correct application and satisfy the need of government, industry, and academia at the same time. Slock ethereum cryptogram me give you a simpler example.
Consider a simple array which has five elements. We have five of those. Now both random numbers and encrypted file doesn't leak any information to adversary. And we have five of those. I will put them to the cloud, they will stay there. Adversary can see, cloud can see, but they will not make sense out of it. Let's say tomorrow I want to look up for Rachel.
I know which random number corresponds to Rachel, right? I will send this to the cloud slock ethereum cryptogram the cloud will search these five items that we put slock ethereum cryptogram. And one of them has a corresponding encrypted file for that random number. That is the information that is associated with you.
Now cloud doesn't know we look for Rachel because it's just a random slock ethereum cryptogram in the file corresponding is encrypted so he doesn't know the content of the e-mail. And he will and send the encrypted file to us, we will decrypt and know what slock ethereum cryptogram you get.
No information is leaked during this process. Search functionality and files are encrypted simultaneously. You do the same operation again and again with the different keys at the end of the day results one not make sense to somebody slock ethereum cryptogram doesn't possess the key. Yes, and several different ways. And actually, how would you know what you encrypt is secure? So, there is a simple example for that I will give you two files.
One of them is totally random, totally random data I produce. On the other hand, I will have another file and I will use my encryption technique. And I will give both of them to you and I will ask which one is random data and which one is encrypted data.
Now if my encryption algorithm is good enough the probability that you would distinguish between real encryption versus random data should be negligible. Basically encryption renders data to random data so that entropy of the data becomes maximal that's how we analyze security of encryption systems.
Yes, and to achieve search purposes we have to leak a little bit more information than slock ethereum cryptogram. Otherwise we could never find who Rachel is or who Attila is, but not much. And that is where search art of searchable encryption starts: Okay, well searchable encryption is about performing a specific task and performing it as fast as you can and that task slock ethereum cryptogram a search on encrypted data, just a keyword search, or a slock ethereum cryptogram and my work is about more general computation.
So, imagine taking any computation that you care about, for example a machine learning classifying algorithm, and you want to run that on encrypted data.
Slock ethereum cryptogram my research is about how to do that in full generality while still being secure and as efficient as possible. So, I like to think of this game as a computation that takes place between two people.
And each person has a list of the acquaintances that they know and the goal of the game is to find someone who is on both lists. So, a person that both people know in common.
Do you know this person? So as a cryptographer I think of whether there are ways to do this without revealing your entire list of acquaintances to the other person.
And, in fact, using the tools slock ethereum cryptogram come out of my research this is something you can do. You can identify commonalities to two different lists without revealing those lists. And this has applications in business, at least. But you can imagine this companies want to get together and figure out what are their common customers or maybe just how many customers they have in common.
And using tools from cryptography they can do this without revealing the content of their customer lists. One method that Mike has been working on to achieve secure computation is a cryptographic method called garbled circuits. I admit, I did not get what it was at first. Well, if you look at the big picture.
This idea that you could compute on encrypted data has been around since the 80s, at least as a theoretical idea. And no one thought to do anything with it because it seemed like it would… the costs would be astronomical.
You can use it for many different things. I think if we close that gap it will make the cost of security less of a barrier, which is good for everyone whose data is out there and being used for these things.
So, although the work of Attila and Mike may not be as dramatic slock ethereum cryptogram the story of Alan Turing, their research in cryptography is helping to protect our data. So, I think they can be considered the heroes of this story.
In part two of the podcast we will be talking about what we as individuals can do to protect our data and why we should be doing it. Get ready for another movie clip because that seems to be a thing I do. How is this all possible? Yeah, but which people? The whole kingdom, Snow White.
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