256-bit
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256-Bit
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- Snippet from Wikipedia: 256-bit computing
In computer architecture, 256-bit integers, memory addresses, or other data units are those that are 256 bits (32 octets) wide. Also, 256-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers, address buses, or data buses of that size. There are currently no mainstream general-purpose processors built to operate on 256-bit integers or addresses, though a number of processors do operate on 256-bit data.
Software
- 256 bits is a common key size for symmetric ciphers in cryptography, such as Advanced Encryption Standard.
- Increasing the word size can accelerate multiple precision (see arbitrary-precision arithmetic) mathematical libraries. Applications include cryptography.
- Researchers at the University of Cambridge use a 256-bit capability pointer, which includes capability and addressing information, on their CHERI capability system.
- Smart contracts use 256-bit or 257-bit integers; 256-bit words for the Ethereum Virtual Machine. “We realize that a 257 bits byte is quite unusual, but for smart contracts it is ok to have at least 256 bits numbers. The leading VM for smart contracts, Ethereum VM, introduced this practice and other blockchain VMs followed.”1)
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Bits: Binary Digit = Bit, 1024-bit, 512-bit, 256-bit, 128-bit, 72-bit, 64-bit, 32-bit, 24-bit, 16-bit, 8-bit, 4-bit; Units of information: Metric bit units (kilobit, megabit, gigabit, terabit, petabit, exabit, zettabit, yottabit); IEC bit units (kibibit, mebibit, gibibit, tebibit, pebibit, exbibit, zebibit, yobibit). Byte, Word (computer architecture). (navbar_bits - see also navbar_bytes)
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256-bit.txt · Last modified: 2024/05/01 04:37 by 127.0.0.1