Batch File Hash Calculator

Choose an algorithm and generate filename/checksum rows locally for a batch of files.

Algorithm

Local files

Choose filesOutput format: checksum, two spaces, filename.

Selected text and files are processed locally. Hashes and checksums detect matching bytes; they do not prove that a file is trustworthy unless the expected digest came from a trusted source.

Batch digest inventory & algorithm handoff

Turn a batch hash run into an auditable file inventory. Record digest width, file count and byte volume, then classify the selected algorithm so a raw checksum list is not confused with a reusable verification manifest.

Intended handoffPath display

—Files selected

—Total bytes

—Algorithm

—Digest width

Ready.

Evidence	Observed	Meaning	Next check

MD5 and SHA-1 remain useful for compatibility checks but are not collision-resistant choices for security-sensitive integrity claims.

Integrity and authenticity are different jobs

connects text/file digests, checksum verification and HMAC workflows. Hashes compare exact bytes; HMAC additionally depends on a shared secret key.

Password-storage boundary

Fast hashes such as SHA-256, SHA-1 and MD5 are not password-storage schemes. Production password storage should use a purpose-built slow password hashing/KDF design with salts and reviewed parameters; legacy algorithms remain here only for compatibility and checksum workflows.