mirror of
https://github.com/azaion/annotations.git
synced 2026-04-22 22:26:31 +00:00
Alex Bezdieniezhnykh
59eb39d447
and replace mac address to disk serial number for more predictable hash key
69 lines
2.5 KiB
Cython
69 lines
2.5 KiB
Cython
import base64
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import hashlib
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import os
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from hashlib import sha384
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from credentials cimport Credentials
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from cryptography.hazmat.backends import default_backend
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from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
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from cryptography.hazmat.primitives import padding
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BUFFER_SIZE = 64 * 1024 # 64 KB
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cdef class Security:
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@staticmethod
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cdef encrypt_to(input_bytes, key):
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cdef bytes aes_key = hashlib.sha256(key.encode('utf-8')).digest()
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iv = os.urandom(16)
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cipher = Cipher(algorithms.AES(<bytes> aes_key), modes.CBC(iv), backend=default_backend())
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encryptor = cipher.encryptor()
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padder = padding.PKCS7(128).padder()
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padded_plaintext = padder.update(input_bytes) + padder.finalize()
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ciphertext = encryptor.update(padded_plaintext) + encryptor.finalize()
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return iv + ciphertext
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@staticmethod
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cdef decrypt_to(ciphertext_with_iv_bytes, key):
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cdef bytes aes_key = hashlib.sha256(key.encode('utf-8')).digest()
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iv = ciphertext_with_iv_bytes[:16]
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ciphertext_bytes = ciphertext_with_iv_bytes[16:]
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cipher = Cipher(algorithms.AES(<bytes>aes_key), modes.CBC(<bytes>iv), backend=default_backend())
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decryptor = cipher.decryptor()
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decrypted_padded_bytes = decryptor.update(ciphertext_bytes) + decryptor.finalize()
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# Manual PKCS7 unpadding check and removal
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padding_value = decrypted_padded_bytes[-1] # Get the last byte, which indicates padding length
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if 1 <= padding_value <= 16: # Valid PKCS7 padding value range for AES-128
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padding_length = padding_value
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plaintext_bytes = decrypted_padded_bytes[:-padding_length] # Remove padding bytes
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else:
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plaintext_bytes = decrypted_padded_bytes
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return bytes(plaintext_bytes)
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@staticmethod
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cdef get_hw_hash(str hardware):
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cdef str key = f'Azaion_{hardware}_%$$$)0_'
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return Security.calc_hash(key)
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@staticmethod
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cdef get_api_encryption_key(Credentials creds, str hardware_hash):
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cdef str key = f'{creds.email}-{creds.password}-{hardware_hash}-#%@AzaionKey@%#---'
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return Security.calc_hash(key)
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@staticmethod
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cdef get_model_encryption_key():
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cdef str key = '-#%@AzaionKey@%#---234sdfklgvhjbnn'
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return Security.calc_hash(key)
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@staticmethod
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cdef calc_hash(str key):
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str_bytes = key.encode('utf-8')
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hash_bytes = sha384(str_bytes).digest()
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cdef str h = base64.b64encode(hash_bytes).decode('utf-8')
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return h
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