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However, generally they are considerably slower (typically by a factor 2–10) than fast, non-cryptographic random number generators. These include: Stream ciphers. Popular choices are Salsa20 or ChaCha (often with the number of rounds reduced to 8 for speed), ISAAC, HC-128 and RC4. Block ciphers in counter mode.
Keygen. A key generator (key-gen) is a computer program that generates a product licensing key, such as a serial number, necessary to activate for use of a software application. Keygens may be legitimately distributed by software manufacturers for licensing software in commercial environments where software has been licensed in bulk for an ...
A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters. This sequence is typically entered by the user during the installation of computer software, and is ...
RDRAND (for "read random") is an instruction for returning random numbers from an Intel on-chip hardware random number generator which has been seeded by an on-chip entropy source. [ 1 ] It is also known as Intel Secure Key Technology, [ 2 ] codenamed Bull Mountain. [ 3 ] Intel introduced the feature around 2012, and AMD added support for the ...
The hack involves replacing a Mobipocket file's PID with one generated from your Kindle's serial number, and then setting a Kindle-specific flag that allows it to be opened.
A predictable serial number attack is a form of security exploit in which the algorithm for generating serial numbers for a particular purpose is guessed, discovered, or reverse engineered, a new serial number is predicted using the algorithm, and the newly generated serial number is then used for a fraudulent purpose, either to obtain an undeserved benefit or to deny service to the legitimate ...
In one form, product activation refers to a method invented by Ric Richardson and patented (U.S. patent 5,490,216) by Uniloc where a software application hashes hardware serial numbers and an ID number specific to the product's license (a product key) to generate a unique installation ID.
The IETF ( Internet Engineering Task Force) RFC 1982 attempts to define "serial number arithmetic" for the purposes of manipulating and comparing these sequence numbers. In short, when the absolute serial number value decreases by more than half of the maximum value (e.g. 128 in an 8-bit value), it is considered to be "after" the former ...