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[2] [3] The Z-20 can operate from locations above 4,000 m (13,000 ft) in altitude as well as from the Liaoning aircraft carrier. [ 4 ] [ 5 ] It is regarded to be comparable in performance to the US-made Sikorsky UH-60 Black Hawk helicopter, of which the civilian Sikorsky S-70 C-2 variant has been used by the People's Liberation Army since 1984.
A software license is a legal instrument that governs the usage and distribution of computer software. [1] Often, such licenses are enforced by implementing in the software a product activation or digital rights management (DRM) mechanism, [2] seeking to prevent unauthorized use of the software by issuing a code sequence that must be entered into the application when prompted or stored in its ...
A file with activation key that needs to be installed in same directory as software; similarly, a disc media (often installation disc) may be required as key disk for activation. [1] Code Morphing Hiding intermediate code by means of code obfuscation so that execution logic is not visible. This method does not protect against runtime tracing. [2]
Product activation is a license validation procedure required by some proprietary software programs. Product activation prevents unlimited free use of copied or replicated software. Unactivated software refuses to fully function until it determines whether it is authorized to fully function. Activation allows the software to stop blocking its use.
Product key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. 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.
Symmetric-key algorithms use a single shared key; keeping data secret requires keeping this key secret. Public-key algorithms use a public key and a private key. The public key is made available to anyone (often by means of a digital certificate). A sender encrypts data with the receiver's public key; only the holder of the private key can ...
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GJ-2: Chinese domestic military designation. Wing Loong 2: Developed from Wing Loong-1, with provisions for up to twelve air-to-surface missiles Wing Loong 2H: Civilian, communication, emergency response variant, equipped with synthetic aperture radar and optoelectronic pod which is able to relay and amplify telecommunication signals.