If youâre David Hockney, whoâs been a seminal figure in modern painting since the 1960s, you literally canât believe it. Hockney holds nothing against his predecessors, but he does have a theory that some used early optical devices to improve and expand their skills.
Check Point Pointsec. A stream cipher is a method of encrypting text (to produce ciphertext) in which a cryptographic key and algorithm are applied to each binary digit in a data stream, one bit at a time.This method is not much used in modern cryptography.he main alternative method is the block cipher in which a key and algorithm are applied to blocks of data rather than individual bits in a stream. Download âTaming the beast: Data protection in the digital age & beyondâ.
The same key is used to encrypt each of the blocks. The idea behind a stream cipher: In this model, the encryption is carried out bit by bit. That means the partition of the plain text is done into small block, as small as 1 bit.For the encryption of each block or bit, a different key is generated.he same key is used to encrypt each of the blocks. The idea behind a stream cipher: In this model, the encryption is carried out bit by bit. That means the partition of the plain text is done into small block, as small as 1 bit.