如何加密目录中的嵌套文件夹

Question

我正在尝试制作一个可以加密目录的程序。不过，我目前所拥有的只能加密目录内的文件，而不能加密嵌套的文件夹。一个例子是如果你想加密“图片”文件夹，它也会加密“保存的图片”和“相机胶卷”以及“图片”中的文件。任何帮助将不胜感激

from cryptography.fernet import Fernet
import os

'''
def write_key():
    key = Fernet.generate_key()
    with open('key.key', "wb") as key_file:
        key_file.write(key)
'''


def load_key():
    file = open('key.key', 'rb')
    key_ = file.read()
    file.close()
    return key_


key = load_key()
fer = Fernet(key)

os.chdir(r"C:\Users\{user}\encrypt_test".format(user=os.getlogin()))
files = os.listdir()
print(files)

for i in range(len(files)):

    with open(files[i], 'rb') as f:
        data = f.read()

    with open(files[i], 'w') as f:
        print(len(data))
        f.write(fer.encrypt(data).decode())
        print('done')

Answer 1

您要求做的是递归地遍历目录以查找所有文件并对其应用一些操作。 os.listdir method as you've seen only gives you the entries in the immediate directory. While you could use that method to write a recursive method (e.g. check if a given entry is a directory, if so, run os.listdir over it, else encrypt, repeat), it's must easier to use os.walk 将为您处理文件树的递归，以及将文件与每个级别的目录分开。这里要注意的一件事是 files 数组， os.walk returns 只是该级别文件的名称，因此您需要将它与 root 组合起来获取完整路径的值。

重写代码以使用呈现：

from cryptography.fernet import Fernet
import os
import path

'''
def write_key():
    key = Fernet.generate_key()
    with open('key.key', "wb") as key_file:
        key_file.write(key)
'''


def load_key():
    file = open('key.key', 'rb')
    key_ = file.read()
    file.close()
    return key_


key = load_key()
fer = Fernet(key)

os.chdir(r"C:\Users\{user}\encrypt_test".format(user=os.getlogin()))

for root, dirs, files in os.walk('.'):
    print(files)
    for filename in files:
        filepath = path.join(root, filename)

        with open(filepath, 'rb') as f:
            data = f.read()

        with open(filepath, 'w') as f:
            print(len(data))
            f.write(fer.encrypt(data).decode())
            print('done')

如何加密目录中的嵌套文件夹

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