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Fsum Frontend is a files integrity checker. It can calculate 96 hash and checksum algorithms(CRC32, MD5, SHA1, SHA2, ADLER, DHA256, FORK256, ...). You can verify your files using a .sfv/.md5/.sha1/.sha2 file or create your own checksum file.
Verifier is a file verification utility that supports the major file checksum formats such as SFV and MD5 sums. It also has native support for the new VerifyXML format, as well as a built-in interactive hash and checksum calculator.
HashSum is a .NET port from GNU's md5sum and sha1sum. It supports: hash algorithm selection between MD5 and SHA1 (more could be added later) and compatibility between HashSum and GNU's checksum file format
MD5 project is a simple example of using ComputeHash method to create MD5 hash value from a file given in argument. It's written in C#. Also available at http://code.google.com/p/md5-computation-program/
It will create an md5 hash from an input buffer or string, and truncate it to 10 characters, which is unique enough for this purpose.If you think you need a different hash algorithm or a longer hash, you're wrong.
Finally, a mechanism for sharing files on twitter that works WITHIN twitter itself. No more third-party services and cryptic short URLs, now you can share files directly with your friends or with the world one tweet at a time.One header for the file transfer. This contains the string “==BEGIN”, the file name, file permissions, and a modified Base64-encoded string of the file's MD5 checksum with the hashtag “#tweetftp” on the end. We modify the string to remove the trailing = signs and replace the characters '+' and '/' with '-' and '_' respectively. While clients may use the checksum to verify the file was retrieved correctly, this is not a requirement: the checksum is primarily used to associate the status updates with one another. The header is also where clients may add a few hashtags to describe the file.
xxHash is an Extremely fast Hash algorithm, running at RAM speed limits. It successfully completes the SMHasher test suite which evaluates collision, dispersion and randomness qualities of hash functions. Code is highly portable, and hashes are identical on all platforms (little / big endian).Q.Score is a measure of quality of the hash function. It depends on successfully passing SMHasher test set. 10 is a perfect score. Algorithms with a score < 5 are not listed on this table.