Architecture
From client app to cryptographic custody.
Trace a single transaction as it leaves your application and travels into EpositBox — and see the security layers that distinguish us from a standard vault.
The journey
Eight layers, one continuous flow
Follow a transaction across client, network, server, and ledger zones. Hover any node to read the technical detail.
Stage 01
BYOK message-level encryption
Customer-held keys never leave the client. Payloads are encrypted before they hit the wire — EpositBox cannot decrypt without the customer key. You retain cryptographic sovereignty end-to-end.
Stage 02
P2P VPN to service endpoint
Mutual peer authentication establishes a dedicated tunnel directly to the EpositBox service endpoint, removing exposure to public routing, DNS surfaces, and opportunistic interception.
Stage 03
TLS 1.2+ in transit
Defense-in-depth: even inside the private tunnel, every byte rides authenticated TLS with strong cipher suites and certificate pinning at the edge.
Stage 04
Envelope & schema validation
Strict envelope verification plus tenant schema validation rejects malformed or off-policy payloads at the door. Nothing reaches the ledger that hasn't passed contract checks.
Stage 05
Smart-contract submission
Each write is expressed through smart contracts whose operations are pre-vetted and governed. There is no ad-hoc database write path — only the operations the network has sanctioned.
Stage 06
Peer voting & consensus
Private blockchain consensus: independent peers validate and vote on every transaction. No single node — including ours — can rewrite history or commit a write unilaterally.
Stage 07
Quantum-grade block encryption
Post-quantum-grade primitives encrypt each committed block, bound to the customer identity. Recovery requires the customer's keys — durability without surrendering control.
Stage 08
Cryptographic provenance & governance
Full chain of custody: signatures, attestations, and an immutable audit trail give a cryptographic guarantee of who changed what, when, and under which policy.
The difference
Why this isn't a standard vault
Most data vaults ask you to trust the operator. EpositBox is engineered so you don't have to.
Standard vault
Trust the operator
- Server-side encryption — custodian holds the keys
- Single point of trust; mutable storage
- Trust-the-operator audit trail
- Classical cryptography; opaque recovery model
EpositBox
Trust the math
- Client-held BYOK; operator can never decrypt
- Peer-consensus writes on a private blockchain
- Cryptographic provenance — verifiable end-to-end
- Quantum-grade block encryption bound to client identity
See the journey with your own data.
Walk through a pilot scoped to your control framework and risk model — we'll map every stage to your existing stack.