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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 corresponding digit of the keystream, to give a digit of the ciphertext stream. Since encryption of each digit is dependent on the current ...
Facebook Paper. During the same week as its tenth anniversary (in 2014), Facebook launched the Paper iPhone app. The app consists of two major features: Firstly, Facebook's News Feed is more graphic, as the app uses technology such as full-screen photos and video footage.
Keystream. In cryptography, a keystream is a stream of random or pseudorandom characters that are combined with a plaintext message to produce an encrypted message (the ciphertext). The "characters" in the keystream can be bits, bytes, numbers or actual characters like A-Z depending on the usage case. Usually each character in the keystream is ...
MENLO PARK, California (Reuters) -Facebook owner Meta Platforms showed off its first working prototype of augmented-reality glasses, called Orion, during its annual Connect conference on Wednesday ...
Salsa20 and the closely related ChaCha are stream ciphers developed by Daniel J. Bernstein. Salsa20, the original cipher, was designed in 2005, then later submitted to the eSTREAM European Union cryptographic validation process by Bernstein. ChaCha is a modification of Salsa20 published in 2008. It uses a new round function that increases ...
Online video platforms allow users to upload, share videos or live stream their own videos to the Internet. These can either be for the general public to watch, or particular users on a shared network. The most popular video hosting website is YouTube, 2 billion active until October 2020 and the most extensive catalog of online videos. [1]
Time period. Key developments in online video web sight. 1974–1992. Development of practical video coding standards. The development of the discrete cosine transform (DCT) lossy compression method leads to the first practical video formats, H.261 and MPEG, initially used for online video conferencing. 1993–2004.
Facebook Reels. Facebook Reels or Reels on Facebook is a short-form video-sharing platform complete with music, audio and artificial effects, offered by Facebook, an online social networking service owned by American company Meta Platforms. Similar to Facebook's main service, the platform hosts user-generated content, but it only allows for ...