[web2py] Acces a page with @auth.requires_login() don't work

[bussiere adrien]

i've created and logged my user with :

password="toto"
my_crypt = CRYPT(key=auth.settings.hmac_key)
crypt_pass = my_crypt(password)[0]    
user = db.auth_user.insert(
           Surnom="Surnom",
           email="email",
           password=crypt_pass,
                           )
db.commit()
session.auth = 
Storage(user=user,expiration=auth.settings.expiration,hmac_key=str(uuid4()))
auth.login_bare(user,password)
and i have no error

but when i wan to access a page with :
@auth.requires_login()

it don't work
Ragrds
Bussiere