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Bkav is a Vietnamese security software and electronics company based in Hanoi. It has grown to be the most popular anti-virus software provider in Vietnam, [ 1 ] capturing over 70% of the domestic market. [ 2 ]
The core function maps a 256-bit key, a 64-bit nonce, and a 64-bit counter to a 512-bit block of the key stream (a Salsa version with a 128-bit key also exists). This gives Salsa20 and ChaCha the unusual advantage that the user can efficiently seek to any position in the key stream in constant time.
An example of this is one-time pad cryptography, where every cleartext bit has a corresponding key from a truly random sequence of key bits. A 140 character one-time-pad-encoded string subjected to a brute-force attack would eventually reveal every 140 character string possible, including the correct answer – but of all the answers given ...
KSD-64 "Crypto-ignition keys" on display at the National Cryptologic Museum in 2005. The KSD-64[A] Crypto Ignition Key (CIK) is an NSA-developed EEPROM chip packed in a plastic case that looks like a toy key. The model number is due to its storage capacity — 64 kibibits (65,536 bits, or 8 KiB), enough to store multiple encryption keys.
In cryptography, the EFF DES cracker (nicknamed "Deep Crack") is a machine built by the Electronic Frontier Foundation (EFF) in 1998, to perform a brute force search of the Data Encryption Standard (DES) cipher's key space – that is, to decrypt an encrypted message by trying every possible key.
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Anti-virus software Norton AntiVirus Developer(s) Gen Digital Initial release December 1990 ; 34 years ago (1990-12) Stable release Windows: 22.21.10.40 (November 1, 2021 ; 3 years ago (2021-11-01)) [±] Operating system Microsoft Windows (Windows 95 and later), macOS, Linux Platform x86 ...
Blowfish has a 64-bit block size and a variable key length from 1 bit up to 448 bits. [45] It is a 16-round Feistel cipher and uses large key-dependent S-boxes . Notable features of the design include the key-dependent S-boxes and a highly complex key schedule .
DES has a key schedule in which the 56-bit key is divided into two 28-bit halves; each half is thereafter treated separately. In successive rounds, both halves are rotated left by one or two bits (specified for each round), and then 48 round key bits are selected by Permuted Choice 2 (PC-2) – 24 bits from the left half and 24 from the right ...