Hash-based file comparison

Concepts and technologies are described herein for hash-based file comparison. In accordance with the concepts and technologies disclosed herein, a comparison tool is configured to compare hash values in a first hash list associated with a first file to hash values in a second hash list corresponding to a second file. The hash values are computed for functional blocks of the respective files and therefore can be compared to indicate if the functional blocks of the two files match one another. If the hash values match, the functional blocks associated with the respective hash values can be determined to match, while hash values that do not match can indicate that the corresponding functional blocks do not match one another.