File Checksum Calculator is a freeware utility for generating and verifying cryptographic hashes in MD5, SHA-1, and SHA-256.
Cryptographic hash functions are commonly used to guard against malicious changes to protected data in a wide variety of software, Internet, and security applications, including digital signatures and other forms of authentication. Two of the most common cryptographic hash functions are the Secure Hash Algorithm (SHA) and Message Digest Algorithm-5 (MD5). Checksum utilities are used to verify the integrity of generated hashes.
File Checksum Calculator is displayed from a simple interface that allows for standard file browsing and drag n' drop. Results are almost instantaneous, as well as hash verification.