Full analysis of Hongmeng Next user authentication system: the way to balance safety and experience🔒

Hongmeng Next's user authentication system builds the cornerstone of ecological security with "multi-mode authentication + security reinforcement".This article streamlines the analysis of core methods, processes and practical optimizations to help developers quickly implement security solutions~

1. Authentication method: "Security Matrix" from basics to biometrics

1. Traditional password authentication

• Application Scenario: Basic login (such as social, tool applications)
• Safety Enhancement:
• Forced password complexity (8-bit + mixed characters)
• Add salt hash storage (SHA-256+random salt value)
• Login failed to lock (5 error locks for 15 minutes)

2. Biometric authentication

Type	Technical Features	Scene Adaptation
Fingerprint	Capacitive/optical acquisition, local encryption comparison	Payment verification, device unlocking
Face	3D structured light modeling, resisting two-dimensional attacks	Quick unlocking, identity verification
Iris	Texture uniqueness, financial-grade security	Confidential systems, high-end transactions

Code example: Fingerprint authentication call

import { biometrics } from '@ohos.biometrics';  

async function verifyFingerprint() {  
const authResult = await biometrics.verify('Fingerprint Verification', {
    type: biometrics.BiometricType.FINGERPRINT  
  });  
  return authResult.success;  
}  

2. Authentication process: "Security Link" from request to authorization

1. Three-stage authentication model

graph LR  
A[User Trigger Authentication] --> B{Authentication Type}
B -->|Password|C[Hash comparison + salt verification]
B -->|Biometrics|D[Feature Extraction → Safe Area Comparison]
C --> E[Generate authentication token]
D --> E  
E --> F[Permission Verification → Resource Access]

2. Key technical points

• Password transmission encryption: HTTPS+TLS 1.3 transmission to prevent man-in-the-middle attacks
• Biometric Isolated Storage: The template is stored in TrustZone secure environment, and the application does not have direct access permissions
• Token Aging Control: Set short time (such as 30 minutes) + refresh mechanism to reduce the risk of token leakage

3. Practical optimization: "balance technique" of safety and experience

1. Multi-factor Certification (MFA) Combination Solution

// Password + fingerprint dual authentication
async function enhancedLogin(username, password, fingerprint) {  
  const pwdValid = await checkPassword(username, password);  
  const fpValid = await verifyFingerprint(fingerprint);  
  return pwdValid && fpValid;  
}  

2. Dynamic security policy

Scenarios	Security Policy
Commonly used device login	Allow "Remember Password" + 7-day authentication-free
Very use device login	Forced secondary authentication (SMS/mail verification code)
Sensitive operations (such as transfers)	Temporary triggering biometric characteristics review

3. Experience optimization skills

• Certification Preload: Preheat the biometric sensor when the application starts, shorten the authentication response time
• Progressive authentication: Normal operations use fingerprints, sensitive operations are upgraded to iris/passwords
• Error Friendly Tips:

  catch (error) {  
    if (error.code === 'BIOMETRIC_FAILED') {  
showToast('Fingerprint matching failed, please try again');
    } else if (error.code === 'PASSWORD_EXPIRED') {  
showToast('Password has expired, please modify it immediately');
    }  
  }  

4. Security reinforcement: "Defense System" in offensive and defensive scenarios

1. Anti-Brute Force Crack

• Login interface current limit: IP level up to 5 requests per minute
• Behavior verification code: The graphical verification code is triggered after 3 consecutive failures

2. Anti-counterfeiting of biometric features

• Live test: Blinking/shaking head movement is required during facial certification
• Hardware binding: Fingerprint template is bound to device UUID, prohibiting cross-device use

3. Data Breach Protection

• Authentication log desensitization: storing user ID hash values, not plain text
• Security audit: Regularly scan for authentication interface vulnerabilities (such as SQL injection, XSS)

Summary: The "Three Principles" of Certification System Design

1. Minimum permission: Dynamically adjust the authentication strength according to the operation sensitivity level
2. Privacy priority: Biometric data "local processing + irreversible encryption"
3. Elastic Experience: Dynamic balance between the bottom line of safety and user convenience