So I made this library for personal use to secure some of my personal files, it's mostly half assed but gets the job done.
It provides support for both fast and highly computationally intensive encryption. Also, it includes a database integration system which facilitates the restoration of files to their original state if necessary, and a GUI is also included to obviate the need to write code on Windows, (only normies use Windows).
The docs can be accessed here, I made it so I don't forget tf I was yapping about a couple of months ago.
pip install litecryptfrom litecrypt import CryptFile, gen_key
key = gen_key()
CryptFile('file_of_any.type', key).encrypt()
# the file is now called ==> 'file_of_any.type.cryptThe encryption process is blazingly fast by default, to make it computationally intensive
Do this
from litecrypt import CryptFile, gen_key
key = gen_key()
CryptFile('anyfile.txt',
key=key,
intensive_compute=True,
iteration_rounds=10000
).encrypt()Running
intensive_computewith noiteration_roundssets the rounds to 50 (minimum) by default
To decrypt simply run:
from litecrypt import CryptFile
key = 'THE_KEY_YOU_USED'
CryptFile('anyfile.txt.crypt',key=key).decrypt()For messages:
from litecrypt import Crypt, gen_key
key = gen_key()
encrypted = Crypt('any message', key).encrypt() # can also be a bytes message
print(encrypted) # Check the return value
Algorithm: AES-256 CBC
Layout:
+-------------+ +--------+ +------------+ +-------------+ +-------------+ +------------------+
| HMAC | →| IV | →| Salt | →| Pepper | →| Iterations | →| KDF ID | →
+-------------+ +--------+ +------------+ +-------------+ +-------------+ +------------------+
+------------------+
| Ciphertext ...
+------------------+
AES and HMAC keys, each 32 bytes, are derived from the main key (gen_key()) using the chosen KDF with SHA256. Iterations range from 50 to 100,000 the higher they go the more time it takes to compute, that's 4 bytes. IV that's 16, Salt, and Pepper are also 16 byte random values, both mixed with the KDF. The ciphertext size varies, uses PKCS7 padding.
Currently, supports MySQL, PostgresSQL and SQLite.
