# 2.1 Platform Architecture

### Cryptic employs a three‑layer design:

#### **Presentation Layer**&#x20;

Mobile clients use a unified React Native interface for secure messaging, payments, and DeFi features.  &#x20;

#### **Application Layer**

Micro-services manage end-to-end encrypted messaging, transaction processing, and non-custodial wallet operations.                                                                   &#x20;

#### **Infrastructure Layer**

* **Blockchain Integration:** Solana for sub-second finality and low fees; multi-chain support planned
* **Key Management:** Device-native secure storage (iOS Secure Enclave, Android Keystore)
* **API & Transport:** RESTful endpoints and WebSockets with end-to-end encryption
