Metastability (electronics)In electronics, metastability is the ability of a digital electronic system to persist for an unbounded time in an unstable equilibrium or metastable state. In digital logic circuits, a digital signal is required to be within certain voltage or current limits to represent a '0' or '1' logic level for correct circuit operation; if the signal is within a forbidden intermediate range it may cause faulty behavior in logic gates the signal is applied to.
FileVaultFileVault est un système de protection des fichiers sur les ordinateurs Macintosh (Apple). On le trouve depuis la version Mac OS X 10.3 (Panther) et suivants. FileVault utilise un système de fichiers chiffré qui est monté et démonté à la connexion et déconnexion de l'utilisateur au système. Le répertoire personnel de l'utilisateur est chiffré/déchiffré en utilisant l'algorithme AES Advanced Encryption Standard, avec une clé cryptographique dérivée du mot de passe de l'utilisateur.
WestmereWestmere est la famille de microprocesseurs d'Intel qui succède à Nehalem. Conservant une microarchitecture Nehalem, le processus de fabrication de ces processeurs, s'inscrivant dans le cadre de la stratégie tic-tac d'Intel, utilise cependant une photolithographie dont la précision maximale est meilleure, au minimum. Cette famille apporte également, par rapport à Nehalem, sept nouvelles instructions spécifiques au chiffrement AES. La microarchitecture ne change pas significativement par rapport à celle de la famille Nehalem.
Hardware registerIn digital electronics, especially computing, hardware registers are circuits typically composed of flip flops, often with many characteristics similar to memory, such as: The ability to read or write multiple bits at a time, and Using an address to select a particular register in a manner similar to a memory address. Their distinguishing characteristic, however, is that they also have special hardware-related functions beyond those of ordinary memory.
Data processing unitA data processing unit (DPU) is a programmable computer processor that tightly integrates a general-purpose CPU with network interface hardware. Sometimes they are called "IPUs" (for "infrastructure processing unit") or "SmartNICs". They can be used in place of traditional NICs to relieve the main CPU of complex networking responsibilities and other "infrastructural" duties; although their features vary, they may be used to perform encryption/decryption, serve as a firewall, handle TCP/IP, process HTTP requests, or even function as a hypervisor or storage controller.
Hardware-based full disk encryptionHardware-based full disk encryption (FDE) is available from many hard disk drive (HDD/SSD) vendors, including: ClevX, Hitachi, Integral Memory, iStorage Limited, Micron, Seagate Technology, Samsung, Toshiba, Viasat UK, Western Digital. The symmetric encryption key is maintained independently from the computer's CPU, thus allowing the complete data store to be encrypted and removing computer memory as a potential attack vector. Hardware-FDE has two major components: the hardware encryptor and the data store.