# Security


- Access Control  
  - [Access Control (Permission) Overview](accesstoken-overview.md)
  - [Applying for Permissions](accesstoken-guidelines.md)
  - [Verifying API Access Permissions](permission-verify-guidelines.md)
  - [Application Permission List](permission-list.md)
  - [Application Permission Group List](permission-group-list.md)
- User Authentication
  - [User Authentication Overview](userauth-overview.md)
  - [User Authentication Development](userauth-guidelines.md)
- HUKS
  - [HUKS Overview](huks-overview.md)
  - [HUKS Development (ArkTS)](huks-guidelines.md)
  - [HUKS Development (Native)](native-huks-guidelines.md)
  - [HUKS Cipher Algorithm Specifications](huks-appendix.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)
  - [HarmonyAppProvision Configuration File](app-provision-structure.md)