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  2. List of random number generators - Wikipedia

    en.wikipedia.org/wiki/List_of_random_number...

    However, generally they are considerably slower (typically by a factor 2–10) than fast, non-cryptographic random number generators. These include: Stream ciphers. Popular choices are Salsa20 or ChaCha (often with the number of rounds reduced to 8 for speed), ISAAC, HC-128 and RC4. Block ciphers in counter mode.

  3. Cryptographically secure pseudorandom number generator ...

    en.wikipedia.org/wiki/Cryptographically_secure...

    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 ...

  4. WhatsApp is working on introducing usernames to the app

    techcrunch.com/2023/05/25/whatsapp-is-working-on...

    WhatsApp has long relied on phone numbers as the only identity for accounts. Users need a phone number to create an account. Anyone in an individual or a group chat can see your phone number.

  5. Telephone numbers in South Korea - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_South...

    Call 051-212-3456 within Busan: 212-3456. Call 051-212-3456 from elsewhere: 051-212-3456. Call 02-312-3456 from abroad: +82-2-312-3456. South Korea uses an open dialing plan with a total length (including 0) of 9 to 11 digits and, within city, subscriber numbers 7 to 8 digits long. Dialing from mobile phones to any type of phone except 010 ...

  6. WhatsApp lets you create groups without naming them - Engadget

    www.engadget.com/whatsapp-lets-you-create-groups...

    Wed, Aug 23, 2023 · 1 min read. REUTERS/Francis Mascarenhas. WhatsApp will now let you create small groups without first naming them. Mark Zuckerberg announced the new feature in a Facebook post ...

  7. WhatsApp makes it easier to send messages to unsaved numbers

    www.engadget.com/whatsapp-makes-it-easier-to...

    You can try out this new feature much in the same way you would start any message. Click on the new message button on your home screen (top right for Apple devices, bottom right for Android ones ...

  8. PSA: Anyone can tell if you are using WhatsApp on your ...

    techcrunch.com/2024/01/17/psa-whatsapp-number...

    Anyone can find out this kind of information by using WhatsApp on the web and inspecting traffic with a browser’s developer tool, Be’ery explained. The only thing a malicious attacker has to ...

  9. Facebook rolls out encrypted cloud chat backups on WhatsApp

    techcrunch.com/2021/10/14/whatsapp-now-lets...

    WhatsApp says it will offer users two ways to encrypt their cloud backups. Users on WhatsApp will see an option to generate a 64-digit encryption key to protect their chat backups in the cloud.