Polynomial Interpolation

I have been reading "How to Share a Secret" in detail for the past few weeks, a revolutionary research paper by Adi Shamir. This paper applies some of the concepts of Number Theory and Algebra, one of which is polynomial interpolation, and has been used to construct a secure and reliable key management system. The... Continue Reading →

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CBC Bit-Flipping Attack

In this blog post, the attack on CBC mode of block cipher encryption will be discussed and in the end, detailed writeup for the 16th challenge of Matasano-Crypto-Challenge i.e. about the Bit Flipping Attack in AES-CBC will be provided with explanation! I want the reader to go through these concepts discussed in the following blog... Continue Reading →

Block-size Detection

In the previous blog, "Detecting the mode of block cipher being used" was discussed. In this blog, the second step in the attacking of a block cipher i.e. detecting the block size of the cipher, will be discussed. Link to the implementation script has been given at the end of this post which is written... Continue Reading →

AES Mode Detection Oracle

In a series of blogs, attacks on AES- Advanced Encryption Standard, will be discussed. There are a number of steps involved to break a block cipher (AES being one of them): Recognizing the mode of block cipher being used. Finding the size of the block being used in the block cipher. Implementing a suitable attack... Continue Reading →

A Tale of Resurrection

"It is difficult to fight against anger, for a man will buy revenge with his soul" This is a tale of resurrection. Resurrection, not of any human soul or body, but resurrection of ideas. Ideas that still have the potential to petrify every human present on this planet. It has often been observed that terrorist... Continue Reading →

Meeting beyond Borders

In the beginning it felt like every other day: repeated hours of technical classes and then coming back to the hostel again. But, it turned out to be completely different. That day, our last period was SaH(Serve an Hour). An hour before SaH, I was tired because the topics taught that day were too complex to... Continue Reading →

Inquilab

"The grossest crime is to compromise with injustice and crime. Remember the eternal law: You must give; if you want to get!" - Netaji Subhash Chandra Bose As the clock struck twelve on the midnight, a new dawn rose, bringing in new hopes for the bright and secure future for our country. For me, Independence... Continue Reading →

Guru Purnima 2016 

Mostly celebrated in India and Nepal, this day is the most auspicious day to express our gratitude towards our guru- our teacher. ‘Guru’ stands for ‘the remover of darkness’. It is celebrated on the purnima (full moon day) of the hindu month of ashadha (june- july). This year it is going to be celebrated on... Continue Reading →

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