Security Architecture
Understanding the MPC Model
Xafer leverages a cutting-edge Multi-Party Computation (MPC) model to fundamentally redesign how private keys are managed. Instead of storing a full private key in any single location, the key is mathematically split into multiple "key shares" distributed across isolated nodes. Signing operations are performed collaboratively by multiple parties, without ever reconstructing the private key at any point in time. This design eliminates single points of failure, insider risk, and external compromise, making it one of the most secure key management solutions available today.
Key Sharding & Signing Flow
Xafer's MPC signing flow includes the following key stages:
Key Generation: The private key is never generated in full. Instead, shares are generated and stored across nodes using a distributed protocol.
Transaction Initiation: A user or system submits a request to sign a blockchain transaction.
Collaborative Signing: Each node independently performs a partial signing operation. These are combined to produce a valid signature.
Broadcasting: The valid signature is assembled and broadcasted to the target blockchain.
Audit Logging: Each operation is logged for transparency, accountability, and compliance auditability.
This process is seamless and invisible to the client, offering secure key management without introducing complexity to developers or users.
Multi-Tenancy & Permission Isolation
Xafer natively supports an enterprise-grade multi-tenancy architecture, enabling each enterprise client to operate in an isolated wallet environment within a shared infrastructure. Data, key management, and operational logs are strictly segregated at the tenant level, ensuring clear boundaries and uncompromised security.
Whether serving financial institutions, Web3 platforms, or wallet service providers, Xafer’s design guarantees tenant-level fault isolation. Even if one tenant experiences a security breach or operational failure, other tenants remain completely unaffected.
Control Triggers & Callback System
Xafer offers a robust control trigger system, enabling enterprises to configure dynamic rules for transaction execution. Scenarios like suspicious addresses, threshold breaches, or out-of-office-hour operations can automatically trigger blocking actions or escalate to additional approvals.
Combined with webhook-based callback mechanisms, Xafer enables real-time communication of risk alerts, transaction status updates, and approval requests to enterprise systems. Developers can integrate these events with internal risk engines, workflow systems, or notification tools—creating a seamless, end-to-end control loop between off-chain business logic and on-chain asset movement.
This architecture ensures both strong security and customizable control over asset operations.
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