Do practical stream ciphers generate their keys with psuedo random number generators?
Friday, 02 August 2024 by Emmanuel Udofia
Stream ciphers are a fundamental concept within the realm of classical cryptography. They are encryption algorithms that encrypt plaintext digits one at a time, typically by combining them with a pseudorandom cipher digit stream. This process is distinct from block ciphers, which encrypt data in fixed-size blocks. The question at hand pertains to whether practical
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, Stream ciphers, Stream ciphers, random numbers and the one-time pad
Tagged under: A5/1, CPRNG, Cryptography, Cybersecurity, Encryption, Keystream, PRNG, RC4, Security, Stream Ciphers
What are block ciphers and how do they differ from stream ciphers in terms of data encryption?
Wednesday, 12 June 2024 by EITCA Academy
Block ciphers and stream ciphers are fundamental concepts in the field of cryptography, specifically under the branch of symmetric key encryption. Both are employed to secure data, but they operate in fundamentally different ways, each with its own set of advantages and disadvantages. Understanding these differences is important for selecting the appropriate encryption method for
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, Applications of block ciphers, Modes of operation for block ciphers, Examination review
Tagged under: AES, Block Ciphers, CBC, CTR, Cybersecurity, Encryption Modes, RC4, Stream Ciphers, Symmetric Key Encryption