Qpher Vault User Guide
Welcome to Qpher Vault — your personal quantum-safe encrypted file vault on iOS. Every file you store is automatically protected with post-quantum cryptography, ensuring your data stays secure even against future quantum computers.
What is Qpher Vault?
Qpher Vault is an iOS app that encrypts, signs, and securely stores your files using the latest NIST-standardized post-quantum algorithms:
- X-Wing KEM (ML-KEM-768 + X25519) for key encapsulation
- AES-256-GCM for file encryption
- Composite ML-DSA (ML-DSA-65 + ECDSA) for digital signatures
- Private keys never leave the server-side secure environment
Features
| Feature | Description | Guide |
|---|---|---|
| Encrypt & Store | Automatically encrypt any file with quantum-safe cryptography | Encrypt & Store |
| Digital Signatures | Sign documents with ML-DSA for tamper detection and non-repudiation | Sign Documents |
| View & Decrypt | Preview encrypted files securely — decryption happens server-side | View & Decrypt |
| Share | Share encrypted files with other Qpher users | Share Documents |
| Export & Import | Create portable .qpher files for offline transfer | Export & Import |
| Folders | Organize your encrypted files into folders | Folders |
| Access Log | Track who viewed, decrypted, or shared your files | Access Log |
Subscription Plans
| Feature | Explorer (Free) | Personal ($7.99/mo) | Starter ($79/mo) | Professional ($199/mo) |
|---|---|---|---|---|
| Storage | 50 MB | 5 GB | 50 GB | 250 GB |
| Encrypt & Store | 5 docs/mo | Unlimited | Unlimited | Unlimited |
| Digital Signatures | - | Yes | Yes | Yes |
| Share | 3/mo | 50/mo | 50/mo | 200/mo |
| Export (.qpher) | - | PQC-only, 50/mo | All modes, 50/mo | All modes, 500/mo |
| Access Log | - | Yes | Yes | Yes |
| Team Management | - | - | 10 members | 25 members |
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