Use secure hash algorithm in WebConfiguration.sign_text Fix: PendingDeprecationWarning: HMAC() without an explicit digestmod argument is deprecated. The default hash algorithm used by hmac.new is md5. As of today, md5 is so weak that it's the equivalent of plaintext and can't be considered to be secured at all. Therefor, we switch to a secure hash algorithm. The rational for choosing sha3_512 is: * the recommended algorithm is at least sha_256 * the stronger, the more secured and sha3_512 is the stronger available * thinking about the future this should keep this part of the code safe long enough before people think about checking it again You can read more about choosing a secure hash algorithm in the NIST recommendations https://csrc.nist.gov/Projects/Hash-Functions/NIST-Policy-on-Hash-Functions This code modification should normally be transparent since check_text_sign is exactly this code 'self.sign_text(text) == signature' and that sign_text is only used in combination with it. The only impact is that the hash is going to move from 32 char to 128 which might make html page a bit bigger and that sha3_512 is slow to compute (which is a good thing for security)

Templates
---------

*Templates* are specific views that do not depend on a result set. The basic
class `Template` (`cubicweb.common.view`) is derived from the class `View`.

To build a HTML page, a *main template* is used. In general, the template of
identifier `main` is the one to use (it is not used in case an error is raised or for
the login form for example). This template uses other templates in addition
to the views which depends on the content to generate the HTML page to return.

A *template* is responsible for:

1. executing RQL query of data to render if necessary
2. identifying the view to use to render data if it is not specified
3. composing the HTML page to return

You will find out more about templates in :ref:`templates`.