[Libre-soc-bugs] [Bug 1159] poly1305 unit tests

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=1159

--- Comment #15 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Sadoon Albader from comment #14)

> Just had the chance to look at this, brilliant.

bit of a hack but the context manager helps a lot

also perhaps useful (at some point) is to capture the *instance*
arguments so that those link back to the input that *caused*
whatever intermediary variables to have their values, such that
you can create a *top level* unit test that happens to reproduce
those exact intermediaries.

> I'll try to start and finish the test suite that generates random messages
> and keys and tests against the poly1305-donna C implementation tonight.

ah it is much simpler (like... 2 minutes vs 1 hour simpler) to test
against the *python* poly1305.py

the advantage is that the python poly1305.py uses arbitrary-length
precision math and is therefore bloody obvious not to have any carry
rollover errors.

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