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Supported Models

Casbin supports the following access control models and patterns:

  1. ACL (접근 제어 목록)
  2. 슈퍼유저가 있는 ACL
  3. ACL without users — For systems without authentication or user identity (e.g. API-only or device access).
  4. ACL without resources — When permissions apply to resource types rather than specific instances (e.g. "write-article", "read-log").
  5. RBAC (Role-Based Access Control)
  6. RBAC with resource roles — Both users and resources can have roles (or group memberships).
  7. RBAC with domains/tenants — Users can have different roles in different domains or tenants.
  8. ABAC (Attribute-Based Access Control) — Uses attributes (e.g. resource.Owner) in rules.
  9. PBAC (Policy-Based Access Control) — Authorization is driven by rule-based policies for dynamic, context-aware decisions.
  10. BLP (Bell–LaPadula) — Formal model with security labels and clearances.
  11. Biba — Integrity model that restricts information flow to prevent unauthorized changes.
  12. LBAC (Lattice-Based Access Control) — Combines confidentiality and integrity in a lattice-based framework.
  13. OrBAC (Organisation-Based Access Control) — RBAC extended with abstraction layers for multi-organization policies.
  14. UCON (Usage Control) — Covers ongoing authorization, mutable attributes, obligations, and conditions.
  15. RESTful — Path patterns (e.g. /res/*, /res/:id) and HTTP methods (GET, POST, PUT, DELETE).
  16. IP Match — Match by IP address or CIDR for network-level control.
  17. Deny-override — Both allow and deny policies; deny overrides allow.
  18. Priority — Policy rules are ordered (e.g. like firewall rules); first match wins.

Examples​

ModelModel filePolicy file
ACLbasic_model.confbasic_policy.csv
ACL with superuserbasic_with_root_model.confbasic_policy.csv
ACL without usersbasic_without_users_model.confbasic_without_users_policy.csv
ACL without resourcesbasic_without_resources_model.confbasic_without_resources_policy.csv
RBACrbac_model.confrbac_policy.csv
RBAC with resource rolesrbac_with_resource_roles_model.confrbac_with_resource_roles_policy.csv
RBAC with domains/tenantsrbac_with_domains_model.confrbac_with_domains_policy.csv
ReBACrebac_model.confrebac_policy.csv
ABACabac_model.confN/A
BLPblp_model.confN/A
Bibabiba_model.confN/A
LBAClbac_model.confN/A
OrBACorbac_model.conforbac_policy.csv
IP Matchipmatch_model.confipmatch_policy.csv
RESTfulkeymatch_model.confkeymatch_policy.csv
Deny-overriderbac_with_not_deny_model.confrbac_with_deny_policy.csv
Allow-and-denyrbac_with_deny_model.confrbac_with_deny_policy.csv
Prioritypriority_model.confpriority_policy.csv
Explicit Prioritypriority_model_explicitpriority_policy_explicit.csv
Subject-Prioritysubject_priority_model.confsubject_priority_policyl.csv