cppcryptfs

cppcryptfs provides transparent file encryption for Windows through a virtual filesystem compatible with gocryptfs. It encrypts file contents and optionally filenames while allowing authorized users to access documents through a mounted drive. Files are encrypted and decrypted automatically during normal operations. Supported encryption methods include AES-256-GCM, AES-SIV, and XChaCha20-Poly1305. Its per-file encryption design makes it suitable for cloud synchronization without requiring a fixed-size encrypted container. Users can create password-protected filesystems and mount them through drive letters or directory mount points. Reverse mode provides an encrypted view of existing unencrypted files. Dokany integration enables filesystem access through standard Windows applications. Compatible encrypted directories can also be shared with Linux gocryptfs installations.