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信发通三国密算法替代的技术研究与探讨

The integration of cryptographic standards into blockchain systems is no longer just a technical consideration—it’s a strategic necessity. As digital transformation accelerates across industries, ensuring cryptographic sovereignty has become central to national security and data integrity. In this context, the adoption of Guomi (Chinese national cryptographic) algorithms—such as SM2, SM3, and SM4—has emerged as a critical milestone in building secure, autonomous, and compliant blockchain infrastructures.

This article explores the technical implementation and strategic significance of Guomi algorithm integration in “XinFaTong” (信发通), a blockchain platform developed by Shanghai Xinlian Information Development Co., Ltd. (Stock Code: 300469). We’ll examine how the platform aligns with China’s financial security regulations, enhances data protection through domestic cryptography, and paves the way for broader applications in trusted digital environments.

The Strategic Importance of Domestic Cryptographic Algorithms

With the rapid advancement of digital currency pilots under initiatives like the Shenzhen Special Economic Zone reform plan (2020–2025), securing digital transactions has become paramount. Cryptography serves as the backbone of trust in decentralized systems, especially in blockchain-based financial infrastructures.

Relying on foreign-developed cryptographic standards introduces potential vulnerabilities—backdoors, undisclosed weaknesses, or geopolitical risks—that could compromise national financial stability. To mitigate these threats, China has established its own suite of state-approved commercial cryptographic algorithms, collectively known as Guomi (GM) algorithms.

These include:

The People's Bank of China's Security Specification for Financial Distributed Ledger Technology mandates support for Guomi algorithms in all domestic blockchain implementations—making compliance not optional, but essential.

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Core Cryptographic Components in XinFaTong

To meet regulatory requirements and ensure end-to-end security, XinFaTong has fully integrated Guomi algorithms across its architecture. This integration spans three core modules: account management, transaction processing, and data storage.

1. Account Creation with SM2 and SM4

When a user creates a digital wallet on XinFaTong:

  1. The server generates an SM2 key pair (public and private keys).
  2. A user-defined transaction password is used to derive an SM4 symmetric encryption key.
  3. The private key is encrypted using SM4, producing a ciphertext version for secure storage.
  4. The public key undergoes SM3 hashing to generate a fixed-length fingerprint.
  5. All components are packaged into a JSON file and returned to the client.

This process ensures that sensitive credentials are never stored in plaintext and are protected using domestically developed cryptographic primitives.

2. Transaction Signing and Verification Using SM2 and SM3

During transaction initiation:

  1. The client serializes the transaction data.
  2. Applies SM3 hashing to generate a message digest.
  3. Signs the digest using the user’s SM2 private key.
  4. Sends the serialized transaction along with the digital signature to the server.

The server then verifies the signature using the corresponding SM2 public key before broadcasting the transaction to the blockchain network. Upon successful consensus, the transaction hash is returned to the client as confirmation.

This workflow guarantees authenticity, non-repudiation, and data integrity—all while adhering to national cryptographic standards.

3. Data Encryption at Rest with SM4

Beyond transactional security, XinFaTong employs SM4 encryption for sensitive data stored in databases and logs. This includes wallet metadata, audit trails, and internal communications between nodes. By applying symmetric encryption with domestically certified algorithms, the platform minimizes exposure to external exploitation and supports secure cross-system interoperability within government and enterprise ecosystems.

Compliance and Security Advantages

XinFaTong’s full support for Guomi algorithms ensures compliance with:

By eliminating reliance on international cryptographic standards such as RSA, SHA-256, or AES (while maintaining backward compatibility where necessary), XinFaTong strengthens China’s cryptographic sovereignty—a vital component of digital infrastructure resilience.

Moreover, this transition supports broader goals:

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Future Directions: Expanding Guomi Integration

Information Development is actively advancing research beyond basic encryption. Future enhancements to XinFaTong will focus on:

These innovations aim to deepen the platform’s role in high-assurance environments where both performance and compliance are critical.

Frequently Asked Questions (FAQ)

What are Guomi algorithms?

Guomi (GM) algorithms are a set of cryptographic standards developed and endorsed by the Chinese State Cryptography Administration. They include SM2 (asymmetric encryption), SM3 (hashing), and SM4 (symmetric encryption), designed to replace foreign cryptographic systems in sensitive applications.

Why is Guomi adoption important for blockchain platforms?

Adopting Guomi ensures cryptographic autonomy, reduces reliance on foreign technologies, and meets strict regulatory requirements in China’s financial and government sectors. It enhances national cybersecurity resilience and enables trusted digital ecosystems.

Does supporting Guomi mean abandoning international standards?

No. While XinFaTong prioritizes Guomi for compliance and security, it can maintain interoperability with international standards when needed. This dual-support model allows flexible deployment across domestic and global environments.

How does SM2 compare to RSA or ECDSA?

SM2 is based on elliptic curve cryptography and offers equivalent security to ECDSA but with optimized parameters for Chinese national standards. It provides faster computation, shorter key lengths, and stronger resistance to certain types of attacks compared to traditional RSA.

Can users still access their funds if they lose their encrypted private key?

No—like most blockchain wallets, loss of the encrypted private key or failure to remember the transaction password results in permanent loss of access. Users are advised to securely back up their JSON files and passwords.

Is XinFaTong only usable within China?

While designed to comply with Chinese regulations, XinFaTong can be adapted for cross-border applications that require cryptographic compliance. Its modular architecture allows configuration based on regional legal and technical requirements.

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Conclusion

The integration of Guomi algorithms into XinFaTong represents more than a technical upgrade—it’s a strategic move toward information security autonomy. By leveraging SM2, SM3, and SM4 across account creation, transaction signing, and data encryption, the platform not only meets central bank mandates but also sets a benchmark for secure, sovereign blockchain development.

As digital finance evolves, platforms that prioritize domestic cryptographic standards, regulatory alignment, and forward-looking research will lead the next wave of innovation. XinFaTong’s journey exemplifies how technology can align with national strategy to build resilient, trustworthy digital infrastructures.

Core Keywords: Guomi algorithms, SM2, SM3, SM4, blockchain security, digital currency, cryptographic sovereignty, financial compliance