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Stream cipher. The operation of the keystream generator in A5/1, an LFSR-based stream cipher used to encrypt mobile phone conversations. A stream cipher is a symmetric key cipher where plaintext digits are combined with a pseudorandom cipher digit stream ( keystream ). In a stream cipher, each plaintext digit is encrypted one at a time with the ...
In the asymptotic setting, a family of deterministic polynomial time computable functions : {,} {,} for some polynomial p, is a pseudorandom number generator (PRNG, or PRG in some references), if it stretches the length of its input (() > for any k), and if its output is computationally indistinguishable from true randomness, i.e. for any probabilistic polynomial time algorithm A, which ...
BLAKE (hash function) BLAKE is a cryptographic hash function based on Daniel J. Bernstein 's ChaCha stream cipher, but a permuted copy of the input block, XORed with round constants, is added before each ChaCha round. Like SHA-2, there are two variants differing in the word size.
Mänôz found the bug in the Meta Accounts Center last year, and reported it to the company in mid-September. Meta fixed the bug a few days later, and paid Mänôz $27,200 for reporting the bug ...
Neither service is mandatory, but it's good to know they exist for Facebook's more privacy conscious users. Cyberattacks and identity theft are on the rise -- it's never a bad time to strengthen ...
Facebook Live, the social network’s live video streaming platform, received a series of updates this week, the most notable being the ability for broadcasters to “go live” from their desktop ...
Facebook is adding yet another way for users to live stream. Messenger Rooms, the social network’s Zoom-esque video conferencing service, will soon support live broadcasts, Facebook announced ...
A key generator [1] [2] [3] is a protocol or algorithm that is used in many cryptographic protocols to generate a sequence with many pseudo-random characteristics. This sequence is used as an encryption key at one end of communication, and as a decryption key at the other. One can implement a key generator in a system that aims to generate ...