Cryptographic primitives | Cryptographically secure pseudorandom number generators | Cryptographic algorithms
A cryptographically secure pseudorandom number generator (CSPRNG) or cryptographic pseudorandom number generator (CPRNG) is a pseudorandom number generator (PRNG) with properties that make it suitable for use in cryptography. It is also loosely known as a cryptographic random number generator (CRNG) (see Random number generation § "True" vs. pseudo-random numbers). Most cryptographic applications require random numbers, for example: * key generation * nonces * salts in certain signature schemes, including ECDSA, RSASSA-PSS The "quality" of the randomness required for these applications varies.For example, creating a nonce in some protocols needs only uniqueness.On the other hand, the generation of a master key requires a higher quality, such as more entropy. And in the case of one-time pads, the information-theoretic guarantee of perfect secrecy only holds if the key material comes from a true random source with high entropy, and thus any kind of pseudorandom number generator is insufficient. Ideally, the generation of random numbers in CSPRNGs uses entropy obtained from a high-quality source, generally the operating system's randomness API. However, unexpected correlations have been found in several such ostensibly independent processes. From an information-theoretic point of view, the amount of randomness, the entropy that can be generated, is equal to the entropy provided by the system. But sometimes, in practical situations, more random numbers are needed than there is entropy available. Also, the processes to extract randomness from a running system are slow in actual practice. In such instances, a CSPRNG can sometimes be used. A CSPRNG can "stretch" the available entropy over more bits. (Wikipedia).
Pseudorandom Number Generation and Stream Ciphers
Fundamental concepts of Pseudorandom Number Generation are discussed. Pseudorandom Number Generation using a Block Cipher is explained. Stream Cipher & RC4 are presented.
From playlist Network Security
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist Computer - Cryptography and Network Security
Pseudorandom Generators for Regular Branching Programs - Amir Yehudayoff
Amir Yehudayoff Institute for Advanced Study March 16, 2010 We shall discuss new pseudorandom generators for regular read-once branching programs of small width. A branching program is regular if the in-degree of every vertex in it is (either 0 or) 2. For every width d and length n, the p
From playlist Mathematics
Jonathan Katz - Introduction to Cryptography Part 1 of 3 - IPAM at UCLA
Recorded 25 July 2022. Jonathan Katz of the University of Maryland presents "Introduction to Cryptography I" at IPAM's Graduate Summer School Post-quantum and Quantum Cryptography. Abstract: This lecture will serve as a "crash course" in modern cryptography for those with no prior exposure
From playlist 2022 Graduate Summer School on Post-quantum and Quantum Cryptography
Weak PRNGs - Applied Cryptography
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
From playlist Applied Cryptography
Pseudorandom Generators for Read-Once ACC^0 - Srikanth Srinivasan
Srikanth Srinivasan DIMACS April 24, 2012 We consider the problem of constructing pseudorandom generators for read-once circuits. We give an explicit construction of a pseudorandom generator for the class of read-once constant depth circuits with unbounded fan-in AND, OR, NOT and generaliz
From playlist Mathematics
Bitcoin - Cryptographic hash function
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/economics-finance-domain/core-finance/money-and-banking/bitcoin/v/bitcoin-cryptographic-hash-function What cryptographic hash functions are and what properties are des
From playlist Money, banking and central banks | Finance and Capital Markets | Khan Academy
Imitation Games - Avi Wigderson
From playlist Mathematics
Pseudorandom Generators for CCO[p]CCO[p] and the Fourier Spectrum... - Shachar Lovett
Shachar Lovett Institute for Advanced Study October 5, 2010 We give a pseudorandom generator, with seed length O(logn)O(logn), for CC0[p]CC0[p], the class of constant-depth circuits with unbounded fan-in MODpMODp gates, for prime pp. More accurately, the seed length of our generator is O(
From playlist Mathematics
ESXiArgs Ransomware Analysis with @fwosar
Join us as we reverse engineer the ESXiArgs ransomware used in wide spread attacks targeting unpatched VMware servers with CVE-2021-21974. Fabian (https://twitter.com/fwosar) joins us to do the heavy lifting! Tutorial that may assist with decrypting files that have been encrypted by E
From playlist Open Analysis Live!
Summary - Applied Cryptography
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
From playlist Applied Cryptography
Cryptography I Intro to Stream Ciphers
From playlist Crypto1
Cryptography I Intro to Stream Ciphers
From playlist Crypto1
Randomness - Applied Cryptography
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
From playlist Applied Cryptography
Chris Peikert - Post Quantum assumptions - IPAM at UCLA
Recorded 27 July 2022. Chris Peikert of the University of Michigan presents "Post Quantum assumptions" at IPAM's Graduate Summer School Post-quantum and Quantum Cryptography. Learn more online at: https://www.ipam.ucla.edu/programs/summer-schools/graduate-summer-school-on-post-quantum-and-
From playlist 2022 Graduate Summer School on Post-quantum and Quantum Cryptography
Top Hashing Algorithms In Cryptography | MD5 and SHA 256 Algorithms Explained | Simplilearn
In this video on Top Hashing Algorithms In Cryptography, we will cover the technical aspects of hashing while going through some well-known hash functions and algorithms at the end. We cover the basics of cryptography and its applications. We also have detailed MD5 and SHA265 Explained sec
From playlist Cyber Security Playlist [2023 Updated]🔥
Primality (1 of 2: Fermat's Test)
From playlist Cryptography
Yes, You Too Can Break Crypto: Exploiting Common Crypto Mistakes
Cryptography is tricky. Sure, everybody knows not to roll out their own crypto, but is it enough? Are the standard algorithms, libraries, and utilities always used the right way? This is of course a rhetorical question! Humans keep making mistakes that other humans can exploit, and Murphy’
From playlist Security