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The election-bound Tamil Nadu government on Tuesday presented the interim budget for , with no populist measures and big-ticket announcements, while revealing the Covid battered finances of the state and pegging the fiscal deficit for the year at 3. The fiscal deficit for has been revised sharply to 4. The deficit rose as a result of a sharp revenue shortfall, Covidrelated additional spending and a thrust given to capex. The state, however, chose to be fiscally responsible and announced a glide path for consolidation — the fiscal deficit to GSDP ratio is estimated to be 3.
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- JetSetGo: The Uber of Indian skies
- Ramenez la nature dans votre vie
- Esistono Food Policy Councils in Italia?
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- TVS Srichakra standalone Sep '13 sales at Rs 414.17 crore
- Intelligence and National Security
- Take-home message
- Tamil Nadu envisages modest rise in Budget in FY22, refrains from populism
- Complete Addition Formulas for Prime Order Elliptic Curves
- Advisers see Romney as centrist most likely to unseat Obama
JetSetGo: The Uber of Indian skies
I was watching this excellent video on the birth of elliptic curves by Dan Boneh, and I felt like the explanation of Diffie-Hellman DH felt short. In the video, Dan goes on to explain the typical DH key exchange:. By the way. But this doesn't really explain how the scheme works. You could wonder: but why doesn't the attacker do the exact same thing Bob and alice just did?
You're right, it is not. To be more accurate: the algorithms we have to quickly exponentiate numbers in finite groups are way faster than the ones we have to compute the discrete logarithm of elements of finite groups. Thanks to these shortcuts the good folks can quickly compute their public keys while the bad folks have to do all the work. MD5 SHA-1 is a concatenation of the outputs of both hashes on the same input. It is a technique aimed at reducing the efficiency of these attacks, but as you can see it, it is not that efficient.
I never understood why Firefox doesn't display a warning when visiting non-https websites. Maybe it's too soon and there are too many no-tls servers out there and the user would learn to ignore the warning after a while? I don't know, so I wrote a few lines and made the add-on here. Just drag and drop the. You can also review the ultra-minimal code in index. A few weeks ago I wrote about testing RSA public keys from the most recent Alexa's top 1 million domains handshake log that you can get on scans.
But I didn't explained why. What does it mean for the private exponent to be "small" compared to the modulus? Let's get some numbers to get an idea:. This is never going to happen if the public exponent used is too small note that this doesn't necessarely mean that you should use a small public exponent. The first one is 6. Quite a difference! So the first thing to do was to parse all the public keys in search for greater exponents than 1,, an arbitrary bound that I could have set higher but, as the results showned, was enough.
I only got 10 public exponents with higher values than this bound! And they were all still relatively small , , , , , , , , , But first! First, a bunch of slides are already available through the real world crypto webpage.
And I've been taking notes every day: day1 , day2 , day3. And bonus, here are some paper that have nothing to do with RWC but that I still want to read right now:. This is the 3rd post of a series of blogpost on RWC Find the notes from day 1 here. I'm a bit washed out after three long days of talk. But I'm also sad that this comes to an end : It was amazing seeing and meeting so many of these huge stars in cryptography.
I definitely felt like I was part of something big. Dan Boneh seems like a genuine good guy and the organization was top notch and the sandwiches amazing. I didn't really understood these talks as I didn't really know what was SGX. White papers, manual, blogposts and everything else is here. I think the point is that there is nothing practical that is better than PPE, so rather than using non-encrypted DB PPE will still hold.
All I was expecting from this talk was explanation of the improvements Lp and cumulative but they just flied through them fortunately they seem to be pretty easy to understand in the paper. Other than that, nothing new that you can't read from their paper. Didn't get much from this talk.
I know this is "real world" crypto but a better intro on ORAM would have been nicer, also where does ORAM stands in all the solutions we already have fortunately the previous talk had a slide on that already. Such sadness. An Oblivious RAM scheme is a trusted mechanism on a client, which helps an application or the user access the untrusted cloud storage. For each read or write operation the user wants to perform on her cloud-side data, the mechanism converts it into a sequence of operations executed by the storage server.
The design of the ORAM ensures that for any two sequences of requests of the same length , the distributions of the resulting sequences of operations are indis-tinguishable to the cloud storage. Existing ORAM schemes typically fall into one of the following categories: 1 layered also called hierarchical , 2 partition-based, 3 tree-based; and 4 large-message ORAMs. This is the 2nd post of a series of blogpost on RWC I don't want to alienate anyone but I also want to write what I thought about the talks, so please don't feel offended and feel free to buy me a beer if you don't like what I'm writing.
And here's another day of RWC! This one was a particularly long one, with a morning full of blockchain talks that I avoided and an afternoon of extremely good talks , followed by a suicidal TLS marathon.
For such a complex protocol I was expecting the RWC speakers to make some effort. But that first talk was not clear as were the other tls talks , slides were tiny, the speaker spoke too fast for my non-native ears, etc Also, nothing you can't learn if you already read this blogpost. Dapps are based on a token-economy utilizing a block chain to incentivize development and adoption.
So instead of playing games on my mac see bellow who plays games on a mac anyway? I took off to visit the Stanford campus and sit in one of their beautiful library. I'm back after successfuly avoiding the blockchain morning. Lightning talks are mini talks of 1 to 3 minutes where slides are forbidden. Most were just people hiring or saying random stuff. Not much to see here but a good way to get into the talking thing it seems.
In the middle of them was Tancrede Lepoint asking for comments on his recent Million Dollar Curve paper. Some people quickly commented without really understanding what it was. Sorry Tanja :D. Overall the idea of the paper is how to generate a safe curve that the public can trust.
They use the Blum Blum Shub PRNG to generate the parameters of the curve, iterating the process until it completes a list of checks taken from SafeCurves , and seeding with several drawings from lotteries around the world in a particular timeframe I think they use a commitment for the time frame so that people can see that these numbers were not chosen in a certain ways and would thus be NUMS.
Slides are here. The talk was entertaining and really well communicated. But there was nothing majorly new that you can't already read in my blogpost here. A really good question from Tom Ritter : "how many bytes do you need to do the attack".
Answer: truncated output of Dual EC is 30 bytes instead of 32 , so you need to bruteforce the 2 bytes. To narrow the search space, 2 bytes from the next output is practical and enough. So ideally 30 bytes and 2 bytes from a following output allows for easy use of the Dual EC backdoor. A smash and grab raid or smash and grab attack or simply a smash and grab is a particular form of burglary. The distinctive characteristics of a smash and grab are the elements of speed and surprise.
A smash and grab involves smashing a barrier, usually a display window in a shop or a showcase, grabbing valuables, and then making a quick getaway, without concern for setting off alarms or creating noise. Question from Dmitry Khovratovich: Makwa does something like this, exactly like this outch! Answer: "I'm not familiar with that".
Server Name Indication SNI is an extension to the TLS computer networking protocol[1] by which a client indicates which hostname it is attempting to connect to at the start of the handshaking process. Didn't understand much, but I know that all the answers are in this paper. So stay tuned for a blogpost on the subject, or just read the freaking paper! I have to admit I was way too tired at that point to follow anything. Everything looked like David Chaum's presentation.
So we'll skip the last talk in this blogpost. Everyone was at CCC before new years eve, and everyone keeps talking about how great it was and how good a time they had But now is RWC nothing to do with the real world cup! Global overview and dumb summary of the day followed by notes of the talks, so just skip this list :. Two human beings verbally compare the Short Authentication String, drawing the human brain directly into the protocol. And this is a Good Thing. There is also the concept of key continuity , where you keep some value that will be used in the following DH key exchange.
Makes me think, why the ratchet in Axolotl? Why the need to constantly change the key being used to encrypt? If someone knows the answer :. Here's a blogpost from Tom Ritter about tagging attacks. The idea: the first node XOR some data to the ciphertext, the third node sees the modified data in clear if the data is not going through https. So with two evil nodes, being the first and last, you can know who is visiting what website traffic correlation. There was also something about doing it with the sha1, and something about adding a MAC between each relay.
But I missed that part, if someone can fill in the blanks for me?
Ramenez la nature dans votre vie
April 30, — January 25, R March 18, — January 21, R Congressional Commissions: Overview and Considerations for Congress. December 19, — January 14, R January 22, — January 11, R
Esistono Food Policy Councils in Italia?
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Mitt Romney may have trouble convincing some Republicans of his conservative bona fides, but his emergence as the GOP presidential front-runner is just fine with investment advisers, many of whom think that he has the best chance of beating President Barack Obama. Rick Santorum in the Iowa caucuses last week. Romney is now the favorite to win the New Hampshire primary tomorrow. One investment adviser said that Mr.
TVS Srichakra standalone Sep '13 sales at Rs 414.17 crore
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Intelligence and National Security
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Take-home message
I was watching this excellent video on the birth of elliptic curves by Dan Boneh, and I felt like the explanation of Diffie-Hellman DH felt short. In the video, Dan goes on to explain the typical DH key exchange:. By the way.
Tamil Nadu envisages modest rise in Budget in FY22, refrains from populism
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Complete Addition Formulas for Prime Order Elliptic Curves
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Advisers see Romney as centrist most likely to unseat Obama
There are a number of advanced cryptographic concepts that may be relevant to RebootingWebOfTrust. The current problems with the CA system can be reduced to a single missing property: trust agility. Individual users should have the option of deciding where to anchor their trust.
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