Qpher Vault User Guide
Qpher Vault is an iPhone app that encrypts your documents on your device, signs them in your name and shares them only with the people you choose.
How your documents are protected
- Each document is encrypted on your iPhone with AES-256-GCM; its key is wrapped with X-Wing (X25519 + ML-KEM-768).
- Sign a document with ML-DSA in your name before you share it; recipients see that it is signed.
- Private keys are generated and used only inside Qpher's isolated key service. No API can export them.
X-Wing and the composite signature Qpher Vault uses by default are hybrids built on IETF drafts; the ML-KEM (NIST FIPS 203) and ML-DSA (NIST FIPS 204) inside them are NIST standards.
Features
| Feature | What it does | Guide |
|---|---|---|
| Encrypt & Store | Encrypt any file on your iPhone before it is uploaded | Encrypt & Store |
| Sign | Sign a document in your name with ML-DSA | Sign Documents |
| View & Decrypt | Open a document; it is decrypted on your iPhone | View & Decrypt |
| Share | Share with any email address (the recipient opens it in the browser). Choose whether they can save a copy. | Share Documents |
| Export & Import | Send a signed .qpher copy by AirDrop, email or Files; opening it needs Qpher Vault and the recipient's account or organization | Export & Import |
| Folders | Group documents into folders | Folders |
| Access Log | On paid plans, see when each document was opened, shared or signed, and by whom. | Access Log |
Plans
The Free plan lets you encrypt, share and receive documents within monthly limits; Personal raises them. Plans and prices are shown in the app.
For organizations: Qpher Vault Organization edition, set up by an admin in Qpher Portal. See qpher.ai/product or write to sales@qpher.ai.
Getting Started
New to Qpher Vault? Start here:
- Getting Started — Download the app, create your account, and encrypt your first file
- Encrypt & Store — Learn how encryption works under the hood
- FAQ — Answers to common questions