使用Python获取保存的 Wifi 密码

通常在连接wifi时，我们必须输入一些密码才能访问网络，但我们无法直接看到我们之前输入的密码，即保存网络的密码。在本文中，我们将看到如何使用Python获取所有保存的 WiFi 名称和密码，为此我们将使用Python的 subprocess 模块。
Wi-Fi是一种无线网络技术，它允许计算机（笔记本电脑和台式机）、移动设备（智能手机和可穿戴设备）和其他设备（打印机和摄像机）等设备与 Internet 连接。
Python（2.x 和 3.x）中存在的subprocess模块用于通过创建新进程来通过Python代码运行新的应用程序或程序。它还有助于获取输入/输出/错误管道以及各种命令的退出代码。

Steps for Implementation :
1. Import the subprocess module 
2. Get the metadata of the wlan(wifi) with the help of check_output method 
3. Decode the metadata and split the meta data according to the line 
4. From the decoded metadata get the names of the saved wlan networks 
5. Now for each name again get the metadata of wlan according to the name 
6. Start try and catch block and inside the try block, decode and split this metadata and get the password of the given wifi name 
7. Print the password and the wifi name and print blank if there is no password 
8. In except block if process error occurred print encoding error occurred 
 

下面是实现

Python3

# importing subprocess
import subprocess
 
# getting meta data
meta_data = subprocess.check_output(['netsh', 'wlan', 'show', 'profiles'])
 
# decoding meta data
data = meta_data.decode('utf-8', errors ="backslashreplace")
 
# splitting data by line by line
data = data.split('\n')
 
# creating a list of profiles
profiles = []
 
# traverse the data
for i in data:
     
    # find "All User Profile" in each item
    if "All User Profile" in i :
         
        # if found
        # split the item
        i = i.split(":")
         
        # item at index 1 will be the wifi name
        i = i[1]
         
        # formatting the name
        # first and last character is use less
        i = i[1:-1]
         
        # appending the wifi name in the list
        profiles.append(i)
         
 
# printing heading       
print("{:<30}| {:<}".format("Wi-Fi Name", "Password"))
print("----------------------------------------------")
 
# traversing the profiles       
for i in profiles:
     
    # try catch block begins
    # try block
    try:
        # getting meta data with password using wifi name
        results = subprocess.check_output(['netsh', 'wlan', 'show', 'profile', i, 'key = clear'])
         
        # decoding and splitting data line by line
        results = results.decode('utf-8', errors ="backslashreplace")
        results = results.split('\n')
         
        # finding password from the result list
        results = [b.split(":")[1][1:-1] for b in results if "Key Content" in b]
         
        # if there is password it will print the pass word
        try:
            print("{:<30}| {:<}".format(i, results[0]))
         
        # else it will print blank in front of pass word
        except IndexError:
            print("{:<30}| {:<}".format(i, ""))
             
     
             
    # called when this process get failed
    except subprocess.CalledProcessError:
        print("Encoding Error Occured")

输出 ：

Wi-Fi Name                    | Password
-----------------------------------------------
Engineer                      | ayush123
honor                         | 1234567890
Engineer_5GHz                 | ayush123
Redmi                         | 12345677
Ayush                         | 123123123
BiGX-cmtqaGFtYjc              | rakshit123
UERJTTBV8e0GUmVkbWkg 2        | 987654321
DESKTOP-F32H70N 5009          | SUSHANT@123
UERJTTBV8e0GUmVkbWkg          | 
Bunns                         | heyhotspot
Hogwarts                      | sushant@123
Cgc wireless                  | database1234
Moto G (5) Plus 8691          | rakshit123
AndroidAP                     | udrw7859
AndroidAPab7e                 | 123000123
roshan                        | 12345678
Svj?                          | salonivij
Hey                           | heythere
AndroidAP202                  | bhuvanbroo
JARVIS                        | abhishek09
B6NO-wq5hamF0IGt1bWHCrg       | 12345678
CDAC                          |