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File hashing is a great way to ensure the equality of two files. This is useful if you are transferring documents and you want to ensure the integrity of the file. Without having to open your documents you can compare byte for byte if the files are identical.
The following is a RUST-WASM based implementation, and uses audited OSS as the basis for the cryptographic hashing. The source code is available here. All hashing is done locally on your browser. No files or information is sent to any server.