Why a block cipher can be easily turned into a stream cipher while the opposite is not the case?
Wednesday, 13 September 2023
by Silvio Pereira
A block cipher can be indeed easily turned into a stream cipher while the opposite is not the case. This is due to the fundamental differences between block ciphers and stream ciphers, as well as the properties and requirements of each. To better understand this problem, let's first define what block ciphers and stream ciphers