MD5 Hash File Health Checker

Features

• Supports almost all Windows platforms, including Microsoft Windows 95, 98, 2000, Me, XP, 2003, Vista, and Windows 7.
• Fast and multi-threaded. You can calculate a 2 GB file less than 1 minute away.
• Supports large files longer than 4 GB.
• Low resource usage. Uses less than 5 MB of RAM.
• It does not require the installed .NET runtime. It is a standalone EXE file and startup is fast.
• Supports verification of the original MD5 value and the current MD5 value.
• More importantly, it's free. No spyware or adware packages.
• Small size, an effective and tiny tool for data security.

About checksum

Checksum or checksum is a code used to verify the integrity of data transmitted through a noisy channel or stored in some medium for some time.

Operation

This is done by calculating the checksum of the data before sending or storing it, and recalculating it when receiving or retrieving it from storage. If the value obtained is the same, the information has not changed and is therefore not corrupted.

More simplified forms of these sons are vulnerable because they do not detect some forms of failure. The simple sum of character values for example is vulnerable to order exchange of characters by the commutability of the sum. There are more elaborate ways to calculate these sums that solve these problems, such as Cyclic Redundancy Check or CRC widely used for fault detection through polynomial division.

About MD5 (Message-Digest algorithm 5)

MD5 is a 128-bit one-way cryptographic (or cryptographic hash function) scattering function developed by RSA Data Security, Inc., described in RFC 1321, and widely used by peer-to-peer software (P2P) in file and login integrity verification. more: https://pt.wikipedia.org/wiki/Soma_de_verificação Source: https://pt.wikipedia.org/wiki/MD5

Fonte:https://github.com/BoscoBecker/JBCheckSumMD5

Make with love — @boscobecker