tartufo searches through git repositories for secrets, digging deep into commit history and branches. This is effective at finding secrets accidentally committed. tartufo also can be used by git pre-commit scripts to screen changes for secrets before they are committed to the repository.

This tool will go through the entire commit history of each branch, and check each diff from each commit, and check for secrets. This is both by regex and by entropy. For entropy checks, tartufo will evaluate the shannon entropy for both the base64 char set and hexidecimal char set for every blob of text greater than 20 characters comprised of those character sets in each diff. If at any point a high entropy string > 20 characters is detected, it will print to the screen.