The Validate program by McAfee Associates is used to provide checksum data for computer programs and data files. A checksum is a form of Redundancy check, a simple way to protect the integrity of data by detecting errors in data that are sent through space ( Telecommunications
It is commonly used to verify that shareware applications written for MSDOS and Microsoft Windows based platforms have not been altered during distribution, (as would be the case if somehow the files had become infected with a computer virus). The term shareware, popularized by Bob Wallace, refers to Copyrighted commercial Software that is Distributed without payment on a trial MS-DOS (short for M icro' s' oft D isk O perating S ystem is an Operating system commercialized by Microsoft. Microsoft Windows is a series of Software Operating systems and Graphical user interfaces produced by Microsoft. A computer virus is a Computer program that can copy itself and infect a computer without permission or knowledge of the user