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CCleaner (/ ˈsiːˌkliːnər /; originally Crap Cleaner), [6] developed by Piriform Software, is a utility used to clean potentially unwanted files and invalid Windows Registry entries from a computer. It is one of the longest-established system cleaners, first launched in 2004. [7] It was originally developed for Microsoft Windows only, [8 ...
Piriform Software Ltd. is a British software company based in London, owned since 2017 by Avast which itself became part of NortonLifeLock (now Gen Digital) in 2022.The company develops cleaning and optimisation tools for Microsoft Windows, macOS and Android operating systems, including CCleaner, CCleaner Browser, Defraggler, Recuva and Speccy.
Recuva. Windows 10, 8.1, 8, 7, Vista and XP. Including both 32-bit and 64-bit versions, but not RT tablet editions. Recuva (/ rɪˈkʌvə /) [2] is an undeletion program for Windows, developed by Piriform Software. It is able to undelete files that have been marked as deleted; the operating system marks the areas of the disk in which they were ...
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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 ...
Malicious Software Removal Tool. Microsoft Windows Malicious Software Removal Tool (MSRT) is a freeware second-opinion malware scanner that Microsoft 's Windows Update downloads and runs on Windows computers each month, independent of the installed antivirus software. First released on January 13, 2005, [2] MSRT does not offer real-time protection.
A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to digital data. [1][2] Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents. On retrieval, the calculation is repeated ...
Blowfish has a 64-bit block size and a variable key length from 32 bits up to 448 bits. [5] It is a 16-round Feistel cipher and uses large key-dependent S-boxes. In structure it resembles CAST-128, which uses fixed S-boxes. The Feistel structure of Blowfish. The adjacent diagram shows Blowfish's encryption routine.