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VIA PadLock

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VIA PadLock is a central processing unit (CPU) instruction set extension to the x86microprocessorinstruction set architecture (ISA) found on processors produced by VIA Technologies and Zhaoxin. Introduced in 2003 with the VIA Centaur CPUs, the additional instructions provide hardware-accelerated random number generation (RNG), Advanced Encryption Standard (AES), SHA-1, SHA256, and Montgomery modular multiplication.

Random number generationRandom number generationRandom number generation is a process by which, often by means of a random number generator (RNG), a sequence of numbers or symbols is generated that cannot be reasonably predicted better than by random chance. This means that the particular outcome sequence will contain some patterns detectable in hindsight but impossible to foresee.Instruction set architectureInstruction set architectureAn instruction set architecture (ISA) is an abstract model that defines the programmable interface of the CPU of a computer, defining how software interacts with hardware. A device (i.e. CPU) that interprets instructions described by an ISA is an implementation of that ISA. Generally, the same ISA is used for a family of related CPU devices.SHA-1SHA-1Wikifunctions has an SHA-1 function.VIA TechnologiesVIA TechnologiesVIA Technologies, Inc. (Chinese: 威盛電子; pinyin: Wēishèng Diànzǐ) is a Taiwanese manufacturer of integrated circuits, mainly motherboardchipsets, CPUs, and memory. It was once the world's largest independent manufacturer of motherboard chipsets. As a fabless semiconductor company, VIA conducts research and development of its chipsets in-house, then subcontracts the actual (silicon) manufacturing to third-party merchant foundries such as TSMC.Advanced Encryption StandardAdvanced Encryption StandardThe Advanced Encryption Standard (AES), also known by its original name Rijndael (Dutch pronunciation: [ˈrɛindaːl], RAIN-dahl), is a specification for the encryption of electronic data established by the US National Institute of Standards and Technology (NIST) in 2001. AES is a variant of the Rijndael block cipher developed by two Belgian cryptographers, Joan Daemen and Vincent Rijmen, who submitted a proposal to NIST during the AES selection process.MicroprocessorMicroprocessorA microprocessor is a computer processor for which the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs. The microprocessor contains the arithmetic, logic, and control circuitry required to perform the functions of a computer's central processing unit (CPU). The microprocessor is capable of interpreting and executing machine code and performing arithmetic operations.ZhaoxinZhaoxinShanghai Zhaoxin Semiconductor Co., Ltd. (, Chinese: 兆芯; pinyin: Zhàoxīn [ʈʂâu ɕín]) is a fabless semiconductor company, created in 2013 as a joint venture between VIA Technologies and the Shanghai Municipal People's Government. The company manufactures x86-compatible desktop and laptop CPUs. The term Zhào xīn means million core.Central processing unitCentral processing unitCentral computer component that executes instructionsCore i9-14900KF, a 2023 CPU made by IntelInside a central processing unit: The integrated circuit of Intel's Xeon 3060, first manufactured in 2006A central processing unit (CPU), also known as a central processor, main processor, or simply processor, is the primary processor in a given computer.List of VIA microprocessor coresThis article lists x86-compliant microprocessors sold by VIA Technologies, grouped by technical merits: cores within same group have much in common.SHA-2SHA-2SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA) and first published in 2001. They are built using the Merkle–Damgård construction, from a one-way compression function itself built using the Davies–Meyer structure from a specialized block cipher. SHA-2 includes significant changes from its predecessor, SHA-1.X86x86 (also known as 80x86 or the 8086 family) is a family of complex instruction set computer (CISC) instruction set architectures initially developed by Intel, based on the 8086 microprocessor and its 8-bit-external-bus variant, the 8088. The 8086 was introduced in 1978 as a fully 16-bit extension of Intel's 8-bit 8080 microprocessor, with memory segmentation as a solution for addressing more memory than can be covered by a plain 16-bit address.

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