Can OFB mode be used as keystream generators?
Output Feedback (OFB) mode is one of the several modes of operation for block ciphers, which allows a block cipher to be used in a way that provides confidentiality by converting it into a stream cipher. This mode is particularly notable for its ability to generate keystreams, making it a suitable candidate for certain cryptographic
What is a probabilistic mode of operation of a block cipher?
In the field of cybersecurity, particularly within the domain of classical cryptography, the concept of "probabilistic mode of operation" pertains to specific methods employed for utilizing block ciphers to ensure both confidentiality and security. These modes of operation are integral to enhancing the security of block ciphers, especially when encrypting data that exceeds the block
What are the main differences between deterministic and probabilistic modes of operation for block ciphers, and why is this distinction important?
Block ciphers are a fundamental component of modern cryptographic systems, providing a mechanism to encrypt fixed-size blocks of data. However, to securely encrypt messages of arbitrary length, block ciphers must be used in conjunction with a mode of operation. Modes of operation define how block ciphers can be applied to data sequences that exceed the
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, Applications of block ciphers, Modes of operation for block ciphers, Examination review