(If you can't read the code in this post on mobile, try this wrapped version instead, sorry) Suppose you have two values. You know some bits are zero, some bits are one, other bits could be either. You can add together those two values to get another such partially-known value, determining as precisely as possible…
Results of the Grand C++ Error Explosion Competition After much deliberation, the winners of the Grand C++ Error Explosion Competition are finally selected. There are two different award categories..
formally verified?
In high-school maths, we are introduced to the idea of a
proof the word “proof” is etymologically related to the word “probe”. In a proof, we reason from first principles (aka
axioms), why a certain assertion (aka
theorem) holds true. Said differently, we
verify the theorem, and
proof represents the verification process.
The axioms and the proof need a language in which they are represented at a minimum, this language involves a syntax and a set of
proof rules governing that syntax. This mathematical rule-based verification is also called
formal verification, to distinguish it from the colloquial use of the word verification which may just involve human inspection.
Dear Legislator,
We are writing from the American Association for the Advancement of Science’s (AAAS) Center for Scientific Evidence in Public Issues and the U.S. Technology Policy Committee of the Association for Computing Machinery (USTPC) regarding Utah’s consideration of an expansion of insecure internet voting. AAAS, the world s largest multidisciplinary scientific society, and ACM, the world’s largest computing society, work to provide a voice for science on societal issues and promote the responsible use of science and technology in public policy.
Internet voting, referring primarily to the electronic return of a marked ballot via email, fax, web-based portal, or mobile apps, is not a secure solution for voting in Utah or elsewhere in any form, nor will it be in the foreseeable future. In April, we wrote to every governor, secretary of state, and state election director across the country detailing the scientific and technical risks of internet voting and urging offici