information block
21Block cipher modes of operation — This article is about cryptography. For method of operating , see modus operandi. In cryptography, modes of operation is the procedure of enabling the repeated and secure use of a block cipher under a single key.[1][2] A block cipher by itself… …
22Block cipher — In cryptography, a block cipher is a symmetric key cipher operating on fixed length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take (for example) a 128 bit block of plaintext as… …
23Block cellular automaton — The Margolus neighborhood for a two dimensional block cellular automaton. The partition of the cells alternates between the set of 2 × 2 blocks indicated by the solid blue lines, and the set of blocks indicated by the dashed red lines. A block… …
24block redundancy check — (BRC) Information added to a transmitted block to verify accuracy of data before it is accepted. Block check data is developed by the sender as a predefined function of information in the block; the receiver performs the same function on… …
25Block matrix — In the mathematical discipline of matrix theory, a block matrix or a partitioned matrix is a matrix broken into sections called blocks. Looking at it another way, the matrix is written in terms of smaller matrices.[1] We group the rows and… …
26Block wargame — is emulated by preserving the secrecy of the type and quality of the troops.Often, block pieces display the main information in the center with a series of numbers (or pips) around the edge, so that the current strength of the unit can be shown… …
27Block size (cryptography) — In modern cryptography, symmetric key ciphers are generally divided into stream ciphers and block ciphers. Block ciphers operate on a fixed length string of bits. The length of this bit string is the block size. Both the input (plaintext) and… …
28Block (internet) — On the internet, a block is a technical measure intended to restrict access to information or resources. Blocks should not be confused with bans, although they are often used to enforce a ban.Effects of blocksA blocked user may have certain… …
29block trade — A large trading order, defined on the New York Stock Exchange as an order that consists of 10,000 shares of a given stock or at a total market value of $200,000 or more. Bloomberg Financial Dictionary A privately negotiated futures transaction… …
30Block Island North Light — Infobox nrhp | name =Block Island North Light nrhp type = caption = lighthouse during renovations in 2008, missing the light location= New Shoreham, Rhode Island lat degrees = 41 lat minutes = 13 lat seconds = 39 lat direction = N long degrees =… …
