Trying to encrypt and decrypt password into a file

[rpizw]

Hi all,

I'm new to Python and probably I'm not going to be a good programmer. however, I have a use case that I try to complete:
I need a Python script that will ask me to type a password which will be encrypt and will place it into an external file.
I also need the decrypt as I'm going to use this bit for SSH using paramiko

I've search so much across the net, but didn't find how to do it. or else I'm just very bad at python and didn't get it :(

I came across this link which is very useful
https://www.thepythoncode.com/article/en...ric-python
but that's not exactly how I need it to work.

so here I am, trying to ask experts

btw I've tried the code below which is clearly not good

#!/usr/bin/env python3

print("Please type your new password.""\n")
text_file = open("sessionsdb.txt", "w")

value_list = []


for i in range(1):
    print("New password: ")
    line = input()
    value_list.append(line + "\n")


text_file.writelines(value_list)

text_file.close()

print("Your password has been encrypted.""\n")

from typing import List
file = open("sessionsdb.txt")
sessionsdb: List[str] = file.read().splitlines()

from cryptography.fernet import Fernet
key = b'PCHl_MjGyEyBxLYha3S-cWg_SDDmjT4YYaKYh4Z7Yug='
cipher_suite = Fernet(key)
ciphered_text = cipher_suite.encrypt(b'sessionsdb[0]')
unciphered_text = (cipher_suite.decrypt(ciphered_text))
print(unciphered_text)
print(ciphered_text)

[DT2000]

Please show your attempts and the errors that have been given so they can be reviewed.

[rpizw]

There is no error code really. it just won't call sessionsdb[0] at ciphered_text = cipher_suite.encrypt

Output:
Please type your new password.

New password: 
typingmynewpassword
Your password has been encrypted.

b'sessionsdb[0]'
b'gAAAAABfMQhPOwq8TwCrmtCVva1uzoaLunHgFU_9BsFQ_u2ROoibUdlkf7tv6999ycPGobDKzk4-GJCDHpmh1qD0f5y3in2EYg=='

[rpizw]

Someone? :)

I'd be grateful if you have a better method to make this work

[bowlofred]

sessionsdb is a variable.
'sessionsdb' is a string and doesn't refer to the variable.
Likewise b'sessionsdb[0]' is just a string of bytes that has nothing to do with the sessionsdb variable.

If you want to encrypt the data in sessionsdb (and it has to be in bytes), then you could either read it as bytes directly in the first place (rather than reading it as UTF-8 text), or you could encode it.

So probably:

ciphered_text = cipher_suite.encrypt(sessionsdb[0].encode())

I'd imagine though that it would be better to just open the file in binary and do binary reads. Then you wouldn't have to encode it later.