Ciphers

The library expects broad use of various encryption algorithms in the future. However, we couldn't leave the library without at least one encryption method. By default, Fernet is available — it's ideal for applications without complex cryptographic requirements. Under the hood, we use the cryptography library, with an external layer called Secure Layer. This is a protocol (interface) for interacting with cryptographic functions.

Fernet

Fernet is a symmetric encryption method based on AES in CBC mode with HMAC for data integrity. It's secure, simple, and supports time-limited tokens.

from cryptography.fernet import Fernet as Cipher
from fastapi_authix.security.fernet import Fernet

secure_layer = Fernet(
    secret_key=Cipher.generate_key(),
    time_to_live=3600,  # 1 hour
)