computer architecture, 128-bit integers, memory addresses, or other data units are those that are 128 bits (16 octets) wide. Also, 128-bit central processing...

Rijndael family, each with a block size of 128 bits, but three different key lengths: 128, 192 and 256 bits. AES has been adopted by the U.S. government...

have a 168-bit key, but an attack of complexity 2112 is now known (i.e. Triple DES now only has 112 bits of security, and of the 168 bits in the key the...

video games, the sixth generation era (in rare occasions called the 128-bit era; see "bits and system power" below) is the era of computer and video games...

number format that occupies 16 bytes (128 bits) with precision at least twice the 53-bit double precision. This 128-bit quadruple precision is designed not...

randomness". CAST-128 is a 12- or 16-round Feistel network with a 64-bit block size and a key size of between 40 and 128 bits (but only in 8-bit increments)...

floating-point numbers. The width of the SIMD registers is increased from 128 bits to 256 bits, and renamed from XMM0–XMM7 to YMM0–YMM7 (in x86-64 mode, from XMM0–XMM15...

X.667 | ISO/IEC 9834-8, but is now obsolete. A UUID is 128 bits in size, in which 2 to 4 bits are used to indicate the format's variant. The most common...

occupies 128 bits (16 bytes) and its significand has a precision of 113 bits (about 34 decimal digits). Half precision, also called binary16, a 16-bit floating-point...

example, AES-128 (key size 128 bits) is designed to offer a 128-bit security level, which is considered roughly equivalent to a RSA using 3072-bit key. In...

data were tampered with. GCM uses a block cipher with block size 128 bits (commonly AES-128) operated in counter mode for encryption, and uses arithmetic...

addresses, or other data units are those that are at most 128 bits 16 octets wide A 128-bit integer can represent up to 3.40282366...e+38 values (2128...

the MMX's 64-bit MMn registers are aliased to the FPU stack and each of the floating-point registers are 80 bits wide, the upper 16 bits of the floating-point...

reference code. SOBER-128 takes a key up to 128 bits in length. Helix Turing Watanabe, Dai; Furuya, Soichi. "A MAC forgery attack on SOBER-128" (PDF). Hawkes...

256 bits of security. Note that 256-bit security is not more useful in practice than 128-bit security, but may be required by some standards. 128 bits are...

4-bit computing is the use of computer architectures in which integers and other data units are 4 bits wide. 4-bit central processing unit (CPU) and arithmetic...

significant bits are concatenated to the 64-bit network prefix, to yield a 128-bit address. If the network prefix is smaller than 64 bits, more bits of the...

changes in the 64-bit extensions include: 64-bit integer capability All general-purpose registers (GPRs) are expanded from 32 bits to 64 bits, and all arithmetic...

12 bits wide. Combining these requirements: 1 bit for the sign, 12 bits for the biased exponent, and 64 bits for the significand means that the extended-precision...

192.0.2.1/24 indicates that 24 significant bits of the address are the prefix, with the remaining 8 bits used for host addressing. This is equivalent...

vector-register width to 128/256 bits - however, as of March 2025, this option has been removed, making support for 512-bit vector-register width mandatory...

architecture, 256-bit integers, memory addresses, or other data units are those that are 256 bits (32 octets) wide. Also, 256-bit central processing...

to the preceding, this turns 128 bits of state into 128 bits of output, when the application demands it. (128→128 bits) count = (int)(x >> 122); low64...

nearest multiple of r bits. As an exception, if A is an empty string, there is no padding at all. The state consists of 320 bits, so the capacity c = 320...

design, in addition to bit, are listed below. Byte denotes a group of bits used to encode a character, or the number of bits transmitted in parallel...

uses 256 bits of the output as the key for standard Salsa20 using the last 64 bits of the nonce and the stream position. Specifically, the 256 bits of output...

over 991,000 bits, a private key of just over 740,000 bits and digital signatures which are 424 bits in length. In order to get 128 bits of security for...

Address: 32 bits The source address from the IPv4 header. Destination Address: 32 bits The destination address from the IPv4 header. Zeroes: 8 bits; Zeroes...

(NIST SP800-38A). I.e. 1-bit loss in a 128-bit-wide block cipher like AES will render 129 invalid bits before emitting valid bits. CFB may also self synchronize...

(except bit-fields) can be smaller. The minimum size for char is 8 bits, the minimum size for short and int is 16 bits, for long it is 32 bits and long...