mysql對數據庫字段存儲的數據加密

原表裏面的數據沒有加密，創建了一張加密表，循環原表裏面的數據，加密後插入到加密表。最後創建一個觸發器，在原表裏面插入了數據，自動觸發在加密表裏面插入相同的數據。

• 使用mysql的aes_encrypt加密數據
• 使用Mysql的aes_decrypt解密數據
• 因爲加密後的數據比較難看，所以使用to_base64轉碼數據和from_base64解碼數據
• 所以實際保存的數據是加密後又轉碼的數據
• 查看數據是先解碼數據在解密數據
• 腳本如下

# _*_ coding: utf-8 _*_
__author__ = 'xiaoke'
__date__ = '2018/6/12 18:25'

"""
添加觸發器
CREATE TRIGGER `auth_enc_trigger` 
AFTER INSERT on auth
FOR EACH ROW
INSERT into `auth_enc` (id, real_name, id_number) VALUES (NEW.id,to_base64(aes_encrypt(NEW.real_name, "slwh-dfh")),to_base64(aes_encrypt(NEW.id_number, "slwh-dfh")));
查詢加密後的表
select id,aes_decrypt(from_base64(real_name),'slwh-dfh'),aes_decrypt(from_base64(id_number),'slwh-dfh') from auth_enc;
"""
import MySQLdb

db = MySQLdb.connect(host='localhost', port=3306, user='root', passwd='mypassword', db='my_db',
                     charset='utf8')
cursor = db.cursor()  # 創建一個遊標對象
cursor.execute("select * from auth;")
lines = cursor.fetchall()
print("一共獲取數據%s條") % (len(lines))
for data in lines:
    id, real_name, id_number = data
    sql = 'insert into auth_enc (id, real_name, id_number) VALUE (%d,to_base64(aes_encrypt("%s","slwh-dfh")),to_base64(aes_encrypt("%s", "slwh-dfh")));' % (
        id, real_name, id_number)
    print(sql)
    try:
        cursor.execute(sql)
        db.commit()
    except Exception, e:
        db.rollback()
        print(e)

cursor.close()