# Security

- Access Control  
  - [Access Control (Permission) Overview](accesstoken-overview.md)
  - [Permission Application Guide](accesstoken-guidelines.md)
  - [Permission Verification Guide](permission-verify-guidelines.md)
  - [App Permission List](permission-list.md)
- User Authentication
  - [User Authentication Overview](userauth-overview.md)
  - [User Authentication Development](userauth-guidelines.md)
- Key Management
  - [HUKS Overview](huks-overview.md)
  - [HUKS Development](huks-guidelines.md)
- Crypto Framework
  - [Crypto Framework Overview](cryptoFramework-overview.md)
  - [Crypto Framework Development](cryptoFramework-guidelines.md)
- Certificate
  - [Certificate Overview](cert-overview.md)
  - [Certificate Development](cert-guidelines.md)
- hapsigner  
  - [hapsigner Overview](hapsigntool-overview.md)
  - [hapsigner Guide](hapsigntool-guidelines.md)