remove: pgcrypto reference

CONTRIBUTING.md

@@ -46,7 +46,7 @@ Feature requests are welcome! Please open an issue describing:
 All changes must include tests:
 - Add test cases to `test_morbac.sql`
 - Ensure all existing tests still pass
-- Test against PostgreSQL 12+ (mention version in PR)
+- Test against PostgreSQL 13+ (mention version in PR)
 
 ### Documentation
 

README.md

@@ -5,7 +5,7 @@
 A PostgreSQL extension implementing the Multi-OrBAC access control model - enabling organization-centric, context-aware, and hierarchical access control with advanced features like delegation, separation of duty, and cross-organizational policies.
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
-[![PostgreSQL 12+](https://img.shields.io/badge/PostgreSQL-12%2B-blue.svg)](https://www.postgresql.org/)
+[![PostgreSQL 13+](https://img.shields.io/badge/PostgreSQL-13%2B-blue.svg)](https://www.postgresql.org/)
 
 ## Features
 
@@ -26,8 +26,7 @@ A PostgreSQL extension implementing the Multi-OrBAC access control model - enabl
 
 ### Prerequisites
 
-- PostgreSQL 12 or higher
-- `pgcrypto` extension (included with PostgreSQL)
+- PostgreSQL 13 or higher
 - Development tools: `make`, `bash`
 
 ### Quick Install

docs/DOCUMENTATION.md

@@ -19,7 +19,7 @@ Complete technical documentation for the Multi-OrBAC PostgreSQL extension.
 
 pg_morbac is built on these principles:
 
-1. **Pure PostgreSQL**: No external dependencies (except pgcrypto)
+1. **Pure PostgreSQL**: No external dependencies
 2. **Schema Isolation**: All objects in `morbac` schema
 3. **Default Deny**: No permission = access denied
 4. **Prohibition Precedence**: Prohibitions checked first, always override permissions

pg_morbac.control

@@ -5,4 +5,3 @@ default_version = '1.0.0'
 module_pathname = '$libdir/pg_morbac'
 relocatable = false
 schema = morbac
-requires = 'pgcrypto'

src/header.sql

@@ -13,8 +13,5 @@
 -- - Role delegation with time bounds
 -- =============================================================================
 
--- Require pgcrypto for UUID generation
-CREATE EXTENSION IF NOT EXISTS pgcrypto;
-
 -- Create the morbac schema
 CREATE SCHEMA IF NOT EXISTS morbac;