Hybrid post-quantum file encryption (X-Wing: X25519 + ML-KEM-768)
Sindook is a command-line tool that seals files with hybrid post-quantum
encryption using the X-Wing KEM (X25519 + ML-KEM-768) and can rotate
recipients, passphrases, and format versions without decrypting or
re-encrypting the payload in fast mode. Pre-1.0 software: the format and
design have not received an independent security audit.
| Publisher | Ruddro Roy |
|---|---|
| Version | 0.8.1 |
| Release date | 2026-08-19 |
| License | Apache-2.0 |
| Installer type | zip |
| Architecture | x64, arm64 |
| Package ID | ruddro-roy.sindook |
winget install --id=ruddro-roy.sindook -ewinget upgrade --id=ruddro-roy.sindook -ewinget uninstall --id=ruddro-roy.sindook -eYes. sindook is free and open-source software released under the Apache-2.0 license.
The latest version is 0.8.1, released on Aug 19, 2026.
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 77aaf9d016f2db5f96a16434d7af79e1df396920ec3e5be736aa84ecb4b16895.
sindook runs on Windows and is available for 64-bit (x64), ARM64 systems.
Open Settings › Apps › Installed apps, find sindook and select Uninstall. From the command line, run winget uninstall --id=ruddro-roy.sindook -e.
Yes. sindook is available as a portable ZIP archive (sindook_0.8.1_windows_amd64.zip, 64-bit (x64)) that runs without installation. Copy it to any folder or USB drive and run it from there.
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