Share your secrets, without a trace
A self-destructing notes and files service with zero-knowledge encryption, installed and maintained by DINAO. The server can never read your content, hosted in France.
What is Cryptgeon?
Cryptgeon is an open-source service for sharing self-destructing notes and files with zero-knowledge encryption: the server is unable to decrypt user content. Inspired by PrivNote, it generates a unique 256-bit identifier and key for each note.
AES-256-GCM encryption is performed client-side: the key never leaves the browser and is never transmitted to the server. Notes are stored in memory (Redis), with no disk persistence, and disappear after a customizable number of views or expiration time.
Developed with Rust (backend) and Svelte (frontend), Cryptgeon is accessible via a web interface, a CLI, and a Raycast extension. It deploys in Docker with a configurable file size limit (up to 512 MiB) and requires HTTPS for browser-side cryptography — ideal for transmitting credentials and sensitive data.
Host Cryptgeon at DINAO
Resource tiers compatible with Cryptgeon prerequisites (minimum 1 vCPU / 256 Mo / 1 Go). Hosted in France, fully managed.
- 1 dedicated vCPU
- 2 Go RAM
- 20 GB NVMe
- Daily backups
- Managed & monitored by DINAO
- 2 dedicated vCPU
- 4 Go RAM
- 40 GB NVMe
- Daily backups
- Managed & monitored by DINAO
- 4 dedicated vCPU
- 8 Go RAM
- 80 GB NVMe
- Daily backups
- Managed & monitored by DINAO
- 8 dedicated vCPU
- 16 Go RAM
- 160 GB NVMe
- Daily backups
- Managed & monitored by DINAO
Technical details
You might be wondering…
Can the server read my notes?
No, that's the whole point of zero-knowledge encryption. The content is encrypted in your browser using AES-256-GCM before sending; the key remains in the link and never reaches the server. Even DINAO cannot decrypt your secrets.
When is a note destroyed?
You set a maximum number of views and/or a lifespan. Once the limit is reached or the time has elapsed, the note is deleted from memory — no trace remains on disk.
Where is the service hosted?
On DINAO infrastructure in France, in one of the available data centers. Secrets only transit through your instance, in France.
What is Cryptgeon used for?
To securely transmit a password, API key, identifier, or sensitive file: you generate a single-use link instead of sending the secret in plain text via email or messaging.
Can I change my plan?
Yes. You can upgrade or downgrade at any time. Since secrets are ephemeral by nature, there is no proprietary lock-in for your data.
