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Supports almost all Windows platforms, including Microsoft Windows 95, 98, 2000, Me, XP, 2003, Vista and Windows 7.
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Fast and multi-threaded. You can calculate a 2 GB file in less than 1 minute.
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Supports large files over 4 GB.
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Low use of resources. Uses less than 5 MB of RAM.
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Does not require the .NET runtime installed. It is a stand-alone EXE file and initialization is fast.
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Supports checking the original MD5 value and the current MD5 value.
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Most importantly, it's free. No spyware or adware packages.
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Small size, an effective and tiny tool for data security.
Checksum or checksum is a code used to check the integrity of data transmitted over a channel with noise or stored in some medium for some time.
This is done by calculating the checksum of the data before of shipping or storing them, and recalculate them when receiving or retrieving them from storage. If the value obtained is the same, the information has not suffered changes and therefore are not corrupted.
More simplified forms of these sums are vulnerable because fail to detect some forms of failure. The simple sum of the character values for example is vulnerable to changing their order for commutativity of the sum. There are more elaborate ways of calculating these sums that solve these problems, such as the Cyclic Redundancy Check cyclic redundancy) or CRC widely used for fault detection by splitting of polynomials.
MD5 is a cryptographic dispersion function 128-bit (or cryptographic hash function) unidirectional developed by RSA Data Security, Inc., described in RFC 1321, and very used by software with a point-to-point protocol (P2P, or Peer-to-Peer, in English) in health check files and logins.
Source: https://en.wikipedia.org/wiki/Sum_de_Verificação Source: https://pt.wikipedia.org/wiki/MD5
Make with love - @boscobecker