Redshift 安全性

Redshift 入門

Jason Myers

Principal Engineer

Redshift 安全性

欄位層級存取控制
以原則實作列層級安全性
以原則進行資料遮罩

Redshift 安全性產品組合

欄位層級權限

可完全隱藏某欄位
可透過 SVV_COLUMN_PRIVILEGES 驗證

SELECT *
  FROM SVV_COLUMN_PRIVILEGES
 WHERE relation_name = 'products';

relation_name | column_name  | privilege_type | identity_name | identity_type
==============|==============|================|===============|==============
products      | product_name | SELECT         | amelia        | user
products      | product_name | SELECT         | analytics     | role

列層級安全性

先行過濾資料的原則

CREATE RLS POLICY policy_books
WITH (category VARCHAR(255))
USING (category = 'Dark Academia');

SELECT product_line, category, product_name
FROM products;

product_line | category      | product_name
=============|===============|===================
Books        | Dark Academia | A Deadly Education

列層級安全性

使用 SVV_RLS_POLICY 檢視原則

SELECT polname AS policy_name, 
       polatts AS column_details,
       polqual AS condition
  FROM SVV_RLS_POLICY;

policy_name  | column_details                                 | condition
 ============|================================================|===========================
policy_books | [{"colname":"category","type":"VARCHAR(255)"}] | category = 'Dark Academia'

列層級安全性管理檢視

SVV_RLS_APPLIED_POLICY 供超級使用者檢視受影響的查詢

SELECT username, 
       command, 
       relschema, 
       relname, 
       polname,
FROM SVV_RLS_APPLIED_POLICY;

username | command | relschema | relname  | polname  
=========|=========|===========|==========|=============
aashvi   |    s    | public    | products | policy_books

動態遮罩概覽

以原則將查詢回傳值遮罩
只有超級使用者或獲授權者可查看
適用於
- 國民身分證號（例如 Social Security Number）
- 信用卡

SELECT name, social_security_number
  FROM customers;

name     | social_security_number
======== | =======================
John Doe | XXX-XX-1234
Jane Doe | XXX-XX-5678

一起來練習吧！

Redshift 入門