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000 Computer science, knowledge, and systems. 000 Computer science, information and general works. 001 Knowledge. 002 The book (writing, libraries, and book-related topics) 003 Systems. 004 Data processing and computer science. 005 Computer programming, programs, and data. 006 Special computer methods (e.g. AI, multimedia, VR) [ 4]
t. e. In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with the help of a key; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth. The receiver deciphers the text by ...
Monobook toolbar. To automatically insert a table, click or (Insert a table) on the edit toolbar. In the Vector toolbar the table icon is in the "Advanced" menu. If "Insert a table" is not on the toolbar follow these directions to add it. The following text is inserted when Insert a table is clicked:
One-time pad. A format of one-time pad used by the U.S. National Security Agency, code named DIANA. The table on the right is an aid for converting between plaintext and ciphertext using the characters at left as the key. In cryptography, the one-time pad ( OTP) is an encryption technique that cannot be cracked, but requires the use of a single ...
Caesar cipher. The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet. The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's ...
Save time in Word with new buttons that show up where you need them. To change the way a picture fits in your document, click it and a button for layout options appears next to it. When you work on a table, click where you want to add a row or a column, and then click the plus sign tab. Reading is easier, too, in the new Reading view.
In cryptography, an S-box ( substitution-box) is a basic component of symmetric key algorithms which performs substitution. In block ciphers, they are typically used to obscure the relationship between the key and the ciphertext, thus ensuring Shannon's property of confusion. Mathematically, an S-box is a nonlinear [ 1] vectorial Boolean function.
An SQL select statement and its result. In computing, a database is an organized collection of data or a type of data store based on the use of a database management system ( DBMS ), the software that interacts with end users, applications, and the database itself to capture and analyze the data. The DBMS additionally encompasses the core ...