How to decode it?

Question

Python

Hello. I am writing here with the last hope. I installed the pycryptodome library, as I am trying to make a client-server application, I will use AES from the library to ensure the security of information. Everything would be fine, but in order to encrypt a text that is a String, you need to put it in front of the text
b'hello, world'
Then AES accepts it and encrypts it, at the moment after the cipher I get b'\x06\xad\x13*V\x01\xa55\xb6v}K'
After decoding b'\xfc\x0f%\xc9\x9f\x0f\x99\x17^\x16\x96\xd6'
But when I try to decode it back to text .decode('utf-8') I get
this error

decrypt = decrypt.decode('utf-8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xfc in position 0: invalid start byte

Sometimes this

decrypt = decrypt.decode('utf-8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xeb in position 0: invalid continuation byte

(After encryption b'\xb3\xfa#\x06\xb6\xa6\xc5\x95F|CJ' ; After decryption b'\xeb`\xdb\x9bK|\xb25!\x18\xb4Z')
Maybe someone knows what case? Google, Yandex did not give clear results, and there is nothing about this in the documentation ...
I wanted to, but I forgot to insert all the code

text = b'Hello, World'
AESkey = get_random_bytes(16)
def encrypt(message, key):
    chiper = AES.new(key,AES.MODE_EAX)
    crypt, tag = chiper.encrypt_and_digest(text)
    return crypt, tag

def decrypt(message, key,tag):
    chiper = AES.new(key,AES.MODE_EAX)
    print(message)
    decrypt = chiper.decrypt(message)
    print(decrypt)
    decrypt = decrypt.decode('utf-8')
    print(decrypt)



cryptmess, tag = encrypt(text, AESkey)
decrypt(cryptmess, AESkey,tag)

Answer 1

fundamental principle:
-

Installed the pycryptodome library

if something does not work:
- read the documentation
- then look for feedback channels (and they exist - https://github.com/Legrandin/pycryptodome/issues)
- get help on third-party resources (like here) it's a matter of luck. possibly very large. it depends on the popularity of the library

Answer 2

I didn't quite understand why. AES has nothing to do with it. Get_random_bytes(16) returns crooked bytes (b'v\x19\xae\xd6\xfe\x92\x1cj\x8b\x17\x9d\xb6\x01#\xf7!') Because of this, when encrypting and decrypting everything is crooked, but it's still not clear how to do it so that the bytes are generated normally