CREATE TABLE ORDERS ( ORDERSID NUMBER(10) PRIMARY KEY, ORDERSDate DATE, ORDERStatus VARCHAR2(20), TotalCost NUMBER(10,2), CustomerID NUMBER(10), FOREIGN KEY (CustomerID) REFERENCES CUSTOMER(CustomerID) ); 以group25作为密钥加密TotalCost
时间: 2023-12-06 10:41:56 浏览: 27
你可以使用以下语句来加密TotalCost:
```
CREATE TABLE ORDERS_ENCRYPTED (
ORDERSID NUMBER(10) PRIMARY KEY,
ORDERSDate DATE,
ORDERStatus VARCHAR2(20),
TotalCost_RAW NUMBER(10,2),
TotalCost_ENCRYPTED RAW(200),
CustomerID NUMBER(10),
FOREIGN KEY (CustomerID) REFERENCES CUSTOMER(CustomerID)
);
INSERT INTO ORDERS_ENCRYPTED (
ORDERSID,
ORDERSDate,
ORDERStatus,
TotalCost_RAW,
TotalCost_ENCRYPTED,
CustomerID
)
SELECT ORDERSID,
ORDERSDate,
ORDERStatus,
TotalCost,
dbms_crypto.encrypt(
UTL_RAW.cast_to_raw(TotalCost),
dbms_crypto.hmac(Utl_raw.cast_to_raw('group25'), Utl_raw.cast_to_raw(TotalCost))
),
CustomerID
FROM ORDERS;
```
该语句将创建一个新的名为ORDERS_ENCRYPTED的表,其中包含原始的TotalCost(TotalCost_RAW)和加密的TotalCost(TotalCost_ENCRYPTED)。加密使用的密钥是group25。