def quick_stretch_password()

in fxa/crypto.py [0:0]

• 9 lines of code
• 1 McCabe index (conditional complexity)

def quick_stretch_password(email, password):
    """Perform the "quick stretch" operation on the given credentials.

    This performs a smallish number of PBKDF2 rounds on the given password.
    It's designed as a compromise between the amount of computation done by
    the client (which may be very resource constrained) and resistance to
    brute-force guessing (which would ideally demand more stretching).
    """
    kdf = PBKDF2HMAC(
        algorithm=hashes.SHA256(),
        length=32,
        salt=check_salt(1, create_salt(1, email)),
        iterations=1000,
        backend=backend
    )
    return kdf.derive(check_password(password))