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About This Tool
SHA-1 Hash Generator computes the 160-bit SHA-1 digest of any text input. SHA-1 is a legacy algorithm now deprecated for security use, but it remains common in Git commit IDs, older SSL certificates, and file fingerprinting systems that have not yet migrated.
Understanding SHA-1 hashes is essential when working with Git — every commit, tree, and blob is identified by its SHA-1 hash. Generating one manually helps debug merge issues or understand how Git internally addresses objects.
Tip: Do not use SHA-1 for new security-critical systems — it was practically broken in 2017. For new work, use SHA-256 or SHA-512 instead.