jlinoff / lock_files Goto Github PK

Will there be a problem with this?
I mainly think about encrypting large files. I think scripts should have this function, which is perfect.

bufferSize = 64 * 1024000
def read_file(opts, path, stats):
'''
Read the file contents.
'''
try:
while True:
with open(path, 'rb') as ifp:
data = ifp.read(bufferSize)
stat_inc(stats, 'read', len(data))
return data
except IOError as exc:
get_err_fct(opts)('failed to read file "{}": {}'.format(path, exc))
return None

My file is too large, more than 10G, and our memory is not so big, it can not read such a large file at one time, hope add the function of large file encryption.

It was pointed out to me today that writing files in place was dangerous because data would be lost if the disk fills up during a write operation. This needs to be changed.

Many thanks to Mick for pointing this out.

Hello, I installed this repo and I was checking it out to use it within a project. However, it turns out after I encrypt something and the time for decryption comes, the decryption never fails. No matter what password you choose it always decrypts. Please try this out and inform me if I might be doing something wrong or if your code needs editing.

the file size is 5.16GB,VERSION = '1.1.3'
C:\Users\vinso\Desktop\lock_files>lock_files.py -P vinson -vv --lock D:\360Downloads\Software
INFO:544 lock "D:\360Downloads\Software\vinson.vhdx" --> "D:\360Downloads\Software\vinson.vhdx.locked"
Exception in thread Thread-1:
Traceback (most recent call last):
File "C:\Python27\lib\threading.py", line 801, in __bootstrap_inner
self.run()
File "C:\Python27\lib\threading.py", line 754, in run
self.__target(*self.__args, **self.__kwargs)
File "C:\Users\vinso\Desktop\lock_files\lock_files.py", line 455, in thread_process_file
process_file(opts, password, entry, stats)
File "C:\Users\vinso\Desktop\lock_files\lock_files.py", line 588, in process_file
lock_file(opts, password, path, stats)
File "C:\Users\vinso\Desktop\lock_files\lock_files.py", line 548, in lock_file
data = AESCipher(openssl=opts.openssl).encrypt(password, content)
File "C:\Users\vinso\Desktop\lock_files\lock_files.py", line 187, in encrypt
ciphertext_binary = encryptor.update(padded_plaintext) + encryptor.finalize()
File "C:\Python27\lib\site-packages\cryptography\hazmat\primitives\ciphers\base.py", line 149, in update
return self._ctx.update(data)
File "C:\Python27\lib\site-packages\cryptography\hazmat\backends\openssl\ciphers.py", line 124, in update
n = self.update_into(data, buf)
File "C:\Python27\lib\site-packages\cryptography\hazmat\backends\openssl\ciphers.py", line 140, in update_into
self._backend._ffi.from_buffer(data), len(data)
OverflowError: integer 5540675600 does not fit '32-bit int'

A number of folks have pointed this out to me privately and they are correct. The pycrypto package is old. I am working on replacing it with the cryptography package now.