CREATE OR REPLACE FUNCTION encrypt_number(p_num NUMBER, p_key VARCHAR2)

该函数用于加密一个数字，需要传入两个参数：要加密的数字和密钥。以下是一个可能的实现：

CREATE OR REPLACE FUNCTION encrypt_number(p_num NUMBER, p_key VARCHAR2)
RETURN RAW
IS
  v_num_raw RAW(8);
  v_key_raw RAW(32);
BEGIN
  -- 将数字转换为 RAW 格式，方便加密
  v_num_raw := UTL_RAW.CAST_TO_RAW(p_num);
  
  -- 将密钥转换为 RAW 格式，方便加密
  v_key_raw := UTL_RAW.CAST_TO_RAW(p_key);
  
  -- 使用 AES256 算法加密数字
  RETURN DBMS_CRYPTO.ENCRYPT(
           src => v_num_raw,
           typ => DBMS_CRYPTO.TYPE_AES256,
           key => v_key_raw
         );
END;

该函数使用了 Oracle 数据库提供的 DBMS_CRYPTO 包来加密数字。具体来说，它将数字和密钥都转换为 RAW 格式，然后使用 AES256 算法进行加密，并返回加密后的结果。注意，函数返回的是一个 RAW 类型的值，如果需要将其转换为其他类型（如字符串或数字），需要使用 Oracle 数据库提供的相应函数进行转换。

相关问题

CREATE TABLE CUSTOMER ( CustomerID NUMBER PRIMARY KEY, Name VARCHAR2(20), Address VARCHAR2(20), PhoneNumber VARCHAR2(20), Email VARCHAR2(30), LoyaltyStatus VARCHAR2(20) ); CREATE TABLE ORDERS ( OrderID NUMBER PRIMARY KEY, OrderDate DATE, OrderStatus VARCHAR2(20), TotalCost NUMBER, CustomerID NUMBER, CONSTRAINT FK_ORDER_CUSTOMER FOREIGN KEY (CustomerID) REFERENCES CUSTOMER(CustomerID) ); CREATE TABLE PRODUCT ( ProductID NUMBER PRIMARY KEY, ProductName VARCHAR2(20), Description VARCHAR2(20), Price NUMBER, Category VARCHAR2(20) ); CREATE TABLE ORDERS_DETAILS ( OrderDetailID NUMBER PRIMARY KEY, OrderID NUMBER, ProductID NUMBER, ProductName VARCHAR2(20), Price NUMBER, Quantity NUMBER, Subtotal NUMBER, CONSTRAINT FK_ORDER_DETAILS_ORDER FOREIGN KEY (OrderID) REFERENCES ORDERS(OrderID), CONSTRAINT FK_ORDER_DETAILS_PRODUCT FOREIGN KEY (ProductID) REFERENCES PRODUCT(ProductID) ); CREATE TABLE STORE ( StoreID NUMBER PRIMARY KEY, StoreName VARCHAR2(20), Location VARCHAR2(20), HoursOfOperation VARCHAR2(20) ); CREATE TABLE INVENTORY ( ProductID NUMBER, StoreID NUMBER, QuantityOnHand NUMBER, ReorderPoint NUMBER, PRIMARY KEY (ProductID, StoreID), CONSTRAINT FK_INVENTORY_PRODUCT FOREIGN KEY (ProductID) REFERENCES PRODUCT(ProductID), CONSTRAINT FK_INVENTORY_STORE FOREIGN KEY (StoreID) REFERENCES STORE(StoreID) ); CREATE TABLE "TRANSACTION" ( TransactionID NUMBER PRIMARY KEY, TransactionDate DATE, TransactionType VARCHAR2(20), TotalAmount NUMBER, CustomerID NUMBER, CONSTRAINT FK_TRANSACTION_CUSTOMER FOREIGN KEY (CustomerID) REFERENCES CUSTOMER(CustomerID) ); CREATE TABLE TRANSACTION_DETAILS ( TransactionDetailID NUMBER PRIMARY KEY, TransactionID NUMBER, ProductID NUMBER, ProductName VARCHAR2(20), Price NUMBER, Quantity NUMBER, Subtotal NUMBER, CONSTRAINT FK_TRANSACTION_DETAILS_TRANSACTION FOREIGN KEY (TransactionID) REFERENCES "TRANSACTION"(TransactionID), CONSTRAINT FK_TRANSACTION_DETAILS_PRODUCT FOREIGN KEY (ProductID) REFERENCES PRODUCT(ProductID) ); CREATE TABLE EMPLOYEE ( EmployeeID NUMBER PRIMARY KEY, Name VARCHAR2(20), Address VARCHAR2(20), PhoneNumber VARCHAR2(20), Email VARCHAR2(30), Position VARCHAR2(20) ); CREATE TABLE SALARY ( EmployeeID NUMBER, StartDate DATE, SalaryAmount NUMBER, EndDate DATE, PRIMARY KEY (EmployeeID, StartDate), CONSTRAINT FK_SALARY_EMPLOYEE FOREIGN KEY (EmployeeID) REFERENCES EMPLOYEE(EmployeeID) ); CREATE TABLE SHIFT ( ShiftID NUMBER PRIMARY KEY, StartTime TIMESTAMP, EndTime TIMESTAMP, StoreID NUMBER, EmployeeID NUMBER, CONSTRAINT FK_SHIFT_EMPLOYEE FOREIGN KEY (EmployeeID) REFERENCES EMPLOYEE(EmployeeID), CONSTRAINT FK_SHIFT_STORE FOREIGN KEY (StoreID) REFERENCES STORE(StoreID) ); 加密Price和PhoneNumber

可以使用 Oracle 提供的 DBMS_CRYPTO 包来加密 Price 和 PhoneNumber 字段。首先需要创建一个加密密钥，然后使用该密钥对数据进行加密和解密。

以下是加密 Price 和 PhoneNumber 字段的示例 SQL 代码：

-- 创建密钥
DECLARE
key_raw RAW(32) := utl_raw.cast_to_raw('my_secret_key');
encryption_type PLS_INTEGER := dbms_crypto.ENCRYPT_AES256 + dbms_crypto.CHAIN_CBC + dbms_crypto.PAD_PKCS5;
key_handle NUMBER;
BEGIN
key_handle := dbms_crypto.create_key(
key_length => 32,
key_type => dbms_crypto.TYPE_AES256,
key_source => key_raw
);
END;
/

-- 加密 Price 字段
UPDATE PRODUCT
SET Price = dbms_crypto.encrypt(
src => to_char(Price),
typ => encryption_type,
key => key_handle
);

-- 加密 PhoneNumber 字段
UPDATE CUSTOMER
SET PhoneNumber = dbms_crypto.encrypt(
src => PhoneNumber,
typ => encryption_type,
key => key_handle
);

注意，在实际应用中，需要妥善保管密钥，确保数据的安全性。