Pycryptodome Help

Здраствуйте/ помогите новичку Пытаюсь разобраться с шифрованием файлов через python Шифруется хорошо, а при расшифровке выдаем ошибки

> Traceback (most recent call last):
  File "/Users/.../decrypt.py", line 31, in <module>
    walk(input('DIR: '))
  File "/Users/.../decrypt.py", line 28, in walk
    decrypt(path)
  File "/Users/.../decrypt.py", line 16, in decrypt
    session_key = cipher_rsa.decrypt(enc_session_key)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/Crypto/Cipher/PKCS1_OAEP.py", line 193, in decrypt
    raise ValueError("Ciphertext with incorrect length.")
ValueError: Ciphertext with incorrect length.

from Crypto.PublicKey import RSA
from Crypto.Random import get_random_bytes
from Crypto.Cipher import AES, PKCS1_OAEP
import os, sys
 
def decrypt(file): 
 
    file_in = open(file, "rb")
    file_out = open(str(file[:-4]), "wb")
    private_key = RSA.import_key(open("cprivate.pem").read())
 
    enc_session_key, nonce, tag, ciphertext = \
       [ file_in.read(x) for x in (private_key.size_in_bytes(), 16, 16, -1) ]
 
    cipher_rsa = PKCS1_OAEP.new(private_key)
    session_key = cipher_rsa.decrypt(enc_session_key)
 
    cipher_aes = AES.new(session_key, AES.MODE_EAX, nonce)
    data = cipher_aes.decrypt_and_verify(ciphertext, tag)
    file_out.write(data)
    print(file + " decrypt!")
    os.remove(file)
 
def walk(dir):
    for name in os.listdir(dir):
        path = os.path.join(dir, name)
        if os.path.isfile(path): 
            decrypt(path)
        else: walk(path)

walk(input('DIR: '))
print("---" )

Ну и сам шифратор

from Crypto.PublicKey import RSA
from Crypto.Random import get_random_bytes
from Crypto.Cipher import AES, PKCS1_OAEP
import os, sys
 
def crypt(file):
    f = open(file, "rb")
    data = f.read(); f.close()
 
    file_out = open(str(file)+".crp", "wb")
 
    recipient_key = RSA.import_key(open("receiver.pem").read())
    session_key = get_random_bytes(16)
 
    
    cipher_rsa = PKCS1_OAEP.new(recipient_key)
    enc_session_key = cipher_rsa.encrypt(session_key)
 
    
    cipher_aes = AES.new(session_key, AES.MODE_EAX)
    ciphertext, tag = cipher_aes.encrypt_and_digest(data)
 
    [ file_out.write(x) for x in (enc_session_key, cipher_aes.nonce, tag, ciphertext) ]
    print(file + " crypt")
    os.remove(file)
def walk(dir):
    for name in os.listdir(dir):
        path = os.path.join(dir, name)
        if os.path.isfile(path): crypt(path)
        else: walk(path)
 
walk(input("Dir: "))
print("---" )