hash

Shell extension allowing you to determine the hash sum of any file.

Calculate file checksum, find duplicates, verify integrity.

Probably nothing new in this but here is one way of converting an Array .

Accelerated MD5 Password Recovery

Get the hash code for a block of text; calculate the hash code for single or multiple files.

Get the hash code for a block of text; calculate the hash code for single or multiple files.

Recover RAR, ZIP, and HASH passwords.

A program you can use to calculate and change the MD5 hash for files

Use hash checker and generator.

Calculate and compare hash values (message digests).