Securely encrypt any file (AES-256-CBC via WebCrypto) and export an encrypted file Generate and securely copy your Base64-encoded key and IV Decrypt previously encrypted files locally with the correct ...
How-To Geek on MSN
Excel security is a myth: Passwords and hidden rows won't save your data, but this will
From hidden rows to sheet protection passwords, Excel's "privacy" features are easily bypassed—encryption and deletion are much more watertight.
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