從Django應用程序寫入/讀取機密文件的解決方案有多安全？

Question

以下將隨機密鑰存儲在服務器文件系統上的解決方案有多么容易受到安全POV的攻擊？

import os
import random
import string
import time

def secret_key_gen(path, max_age=86400):
    """
    Try to load the SECRET_KEY from SECRET_FILE. 
    If that fails, then generate random SECRET_KEY 
    and save it into our SECRET_FILE for future loading. 
    If everything fails, then just raise an exception.

    Given the app is running by a user with with sufficient rights 
    to write into app directory, key file will be auto-generated 
    the first time it's been looked for. 
    """

    SECRET_FILE = os.path.join(path, 'SECURITY_HASH')
    try:       
        last_modified = os.stat(SECRET_FILE).st_mtime
        lifespan = (time.time() - last_modified)

        # update key if file age is older than allowed
        if lifespan > max_age: 
            raise IOError

        SECRET_KEY = open(SECRET_FILE).read().strip()
    except (OSError, IOError):
        try:
            l = lambda _: random.SystemRandom().choice(string.printable)
            SECRET_KEY = ''.join(map(l, range(32)))
            with open(SECRET_FILE, 'w') as f:
                f.write(SECRET_KEY)
        except IOError:
            raise Exception('Cannot open file `%s` for writing.' % SECRET_FILE)
    return SECRET_KEY

# usage
SECURITY_HASH = secret_key_gen(
    path=os.path.dirname(__file__),
    max_age=60 * 60 * 24)

服務器環境是linux，運行多線程apache服務器。

摘錄內容摘錄： https ： //www.rdegges.com/2011/the-perfect-django-settings-file/

Answer 1

您可能要記住，通過該max_age變量更改SECRET_KEY設置可能會影響您的應用程序。 這個SO問題討論了SECRET_KEY與Django一起使用的一些方式。

更改Django的SECRET_KEY的影響

您可能會檢查以確保您沒有以更改設置會影響您的方式使用應用。