Introduction
The accelerated pilot of digital currency in China underscores the critical role of cryptographic security in financial technology. With the introduction of the Comprehensive Reform Pilot Implementation Plan for Shenzhen to Build a Socialist Pioneering Demonstration Zone (2020–2025), the need for autonomous, controllable cryptographic technologies has become paramount. Foreign encryption algorithms carry uncontrollable risks, making domestic solutions like China’s State Cryptography Administration (SCA)-approved SM algorithms essential for national security.
The Imperative for SM Algorithms
- National Security Strategy:
SM algorithms (SM2, SM3, SM4) form a complete cryptographic standard system, ensuring compliance with regulations like the Financial Distributed Ledger Technology Security Specification (2020), which mandates their use in blockchain technologies. - Blockchain Fundamentals:
Cryptographic techniques—symmetric encryption, digital signatures, and hashing—are foundational to blockchain. Transitioning to SM algorithms mitigates reliance on foreign standards.
SM Algorithm Integration in XinfaTong
Developed by Shanghai Xinlian Information Development Co., Ltd. (Stock Code: 300469), XinfaTong incorporates SM algorithms across its architecture:
Key Components
| Algorithm | Application | Purpose |
|---|---|---|
| SM2 | Digital signatures | Transaction verification |
| SM3 | Data hashing | Message integrity checks |
| SM4 | Symmetric encryption | Private key protection |
Workflow Highlights
- Wallet Creation:
SM2 generates key pairs; SM4 encrypts private keys. Public keys are hashed via SM3. - Transaction Process:
Clients serialize transactions → SM3 hash → SM2 signature → Server broadcasts to blockchain.
👉 Explore SM4 encryption use cases
Strategic Advantages
- Compliance: Meets SCA and central bank security requirements.
- Innovation: Enables "blockchain + digital token" applications in secure environments.
Future Directions
- Expand SM algorithms into consensus mechanisms and multi-party computation.
- Integrate hardware cryptographic modules for enhanced wallet security.
FAQs
Q1: Why replace international algorithms with SM standards?
A1: To ensure cryptographic autonomy, reduce security risks, and comply with national policies.
Q2: How does XinfaTong use SM3?
A2: For hashing transaction data to guarantee integrity before signing.
Q3: Is SM4 encryption secure for private keys?
A3: Yes, SM4’s symmetric encryption protects keys using transaction-derived passwords.
👉 Learn about blockchain security frameworks
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