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    • CafeCS

      Public
      Café CS is a weekly webinar series organized by the Scientific Association of Computer Science at Shahid Beheshti University. Each one-hour session features tal…
      TypeScript
      0400Updated Dec 14, 2025Dec 14, 2025
    • CSSASBU

      Public
      0100Updated Nov 23, 2025Nov 23, 2025
    • This is the first and main challenge of the puzzles in this issue of the Pardazeh magazine. You can find the configuration of the Enigma machine by solving the …
      0000Updated Feb 25, 2025Feb 25, 2025
    • ASCII (American Standard Code for Information Interchange) is a character encoding standard that represents text in computers using numeric codes. It assigns a …
      Python
      0000Updated Dec 26, 2024Dec 26, 2024
    • Hexadecimal is a number system based on 16 digits, using the numbers 0-9 and the letters A-F. Each digit represents a value from 0 to 15. It is commonly used in…
      Python
      0000Updated Dec 26, 2024Dec 26, 2024
    • Alternate Data Streams (ADS) in NTFS allow multiple data streams to be associated with a single file. In addition to the main data stream, files can store extra…
      0100Updated Dec 26, 2024Dec 26, 2024
    • I'm sorry, but you already have everything you need to solve the challenge. There’s nothing more to say. The answer is waiting—trust your instincts and the hint…
      0000Updated Dec 26, 2024Dec 26, 2024
    • Visual cryptography is a unique encryption technique where a secret image is divided into multiple transparent shares. Individually, these shares appear as rand…
      Python
      0000Updated Dec 26, 2024Dec 26, 2024
    • Image steganography is the technique of embedding concealed information within digital images, typically by modifying less noticeable components, such as the le…
      Python
      0000Updated Dec 26, 2024Dec 26, 2024
    • A simple substitution cipher is an encryption method where each letter in the plaintext is consistently replaced with a different letter. For example, if ‘A’ be…
      0000Updated Dec 26, 2024Dec 26, 2024
    • The Caesar Cipher is one of the simplest encryption techniques. It's a type of substitution cipher where each letter in the plaintext is shifted a certain numbe…
      Python
      0000Updated Dec 26, 2024Dec 26, 2024