
CastleFile
Fun, secure and client side file encryption using chess
CastleFile launched on January 10, 2025 with 121 votes, #344 of 6,142 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
CastleFile is an innovative file encryption tool that uses chess moves as unique keys for secure, client-side file encryption. It uses the SHA-256 hashing algorithm and AES encryption to ensure top-notch data protection, combining chess with cryptography.
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