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Cyclic redundancy check. A cyclic redundancy check ( CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to digital data. [ 1][ 2] Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents.
RC5. 12-round RC5 (with 64-bit blocks) is susceptible to a differential attack using 2 44 chosen plaintexts. [ 1] In cryptography, RC5 is a symmetric-key block cipher notable for its simplicity. Designed by Ronald Rivest in 1994, [ 2] RC stands for "Rivest Cipher", or alternatively, "Ron's Code" (compare RC2 and RC4 ).
The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [ 1] This is a list of time zones from release 2024a of the tz database. [ 2]
40-bit encryption. 40-bit encryption refers to a (now broken) key size of forty bits, or five bytes, for symmetric encryption; this represents a relatively low level of security. A forty bit length corresponds to a total of 2 40 possible keys. Although this is a large number in human terms (about a trillion ), it is possible to break this ...
In error-correcting coding, the minimum Hamming weight, commonly referred to as the minimum weightwminof a code is the weight of the lowest-weight non-zero code word. The weight wof a code word is the number of 1s in the word. For example, the word 11001010 has a weight of 4. In a linear block codethe minimum weight is also the minimum Hamming ...
Cryptographic (e.g. RDRAND, AES-NI) Discontinued (e.g. 3DNow!, MPX, XOP) v. t. e. The x86 instruction set refers to the set of instructions that x86 -compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor.
A 64-bit word can be expressed as a sequence of 16 hexadecimal digits. In computer architecture, 64-bit integers, memory addresses, or other data units [ a] are those that are 64 bits wide. Also, 64-bit central processing units (CPU) and arithmetic logic units (ALU) are those that are based on processor registers, address buses, or data buses ...
Organizationally unique identifier. An organizationally unique identifier ( OUI) is a 24-bit number that uniquely identifies a vendor, manufacturer, or other organization. OUIs are purchased from the Institute of Electrical and Electronics Engineers (IEEE) Registration Authority by the assignee (IEEE term for the vendor, manufacturer, or other ...