Best of Cryptography — November 2024

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   Video

   David Bombal·1y

   Hacker explains Crypto (Cryptography tutorial)

   The post explains the fundamentals of cryptography, starting with basic concepts such as the birthday paradox, exclusive OR (XOR) operations, and different types of ciphers. It emphasizes the importance of knowing the basics of cryptographic algorithms and operations before diving into advanced topics. Additionally, it covers symmetric key cryptography and the significance of initialization vectors in encryption. The post also touches on more complex topics like stream ciphers and block ciphers, highlighting the importance of rekeying and managing initialization vectors properly to maintain security.

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2. 2
   Article

   Kirupa·1y

   Finding Prime Numbers Using a Sieve of Eratosthenes

   The Sieve of Eratosthenes is a highly efficient algorithm for finding all prime numbers up to a specified limit. It works by iteratively marking the multiples of each prime number starting from 2. This method quickly eliminates composite numbers and retains prime numbers. The algorithm can be easily implemented in various programming languages, such as JavaScript, and is crucial for tasks in modern cryptography and large number testing.

   12
3. 3
   Article

   Dhole Moments·1y

   What To Use Instead of PGP

   PGP is outdated and inferior for cryptographic tasks like signing software distributions, encrypting files, and identity verification. Instead, it recommends using tools like Sigstore for software distributions, SSH Signatures for signing Git tags/commits, Magic Wormhole for sending files, Tarsnap for backups, and age for file encryption. Signal is suggested for private messaging. The author is also developing a Public Key Directory for enhanced identity verification and encryption on the Fediverse.

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