Sindbad~EG File Manager

from core import app
from cryptography.fernet import Fernet
"""
Author 		: 	Ganesan
Created On 	: 	2020-Sep-28 5:58 PM
Usage 		: 	encrypt and decrypt for url parameters and strings
Eg 			: 
				encrypted = Cryptography.encrypt("my text")
				encrypted (output) : gAAAAABfcdgFt4T9tR3ixH00UVqJGQvMyu-WmIpWjxp3EVNZCq1M_uvlTZKD7X2PJXRDafJFfCZhpyVU0CaZstcenVm5s0oemQ==
				decrypted = Cryptography.decrypt(encrypted)
				decrypted (output) : my text
"""
class Cryptography:
	def generate_key():
		"""
		Generates a key and save it into a file
		"""
		key = Fernet.generate_key()
		with open("secret.key", "wb") as key_file:
			key_file.write(key)

	def load_key():
		"""
		Loads the key named `secret.key` from the current directory.
		"""
		return open("secret.key", "rb").read()

	def encrypt(value):
		"""
		Encrypts a message
		"""
		key = Cryptography.load_key()
		encoded_value = repr(value).encode('utf-8')
		f = Fernet(key)
		encrypted_value = f.encrypt(encoded_value)

		return encrypted_value.decode()


	def decrypt(encrypted_value):
		"""
		Decrypts an encrypted message
		"""
		key = Cryptography.load_key()
		f = Fernet(key)
		decrypted_value = f.decrypt(bytes(encrypted_value,'utf-8'))

		return decrypted_value.decode()



app.jinja_env.globals.update(Cryptography=Cryptography)