[mm] OpenSparc -- the open source chip (except for the crypto parts)

[Ben Laurie]

Perry E. Metzger wrote:
> Ben Laurie <ben at links.org> writes:
>> I think that's blatantly untrue. For example, if I look at an AND
>> gate, I can be absolutely sure about its security properties.
> 
> An AND gate isn't Turing Equivalent.

Nor are most algorithms.

>> Rice's theorem says you can't _always_ solve this problem. It says
>> nothing about figuring out special cases.
> 
> Any modern processor is sufficiently larger than an AND gate that it
> is no longer tractable. It isn't even possible to describe the
> security properties one would need to (formally) prove.

I won't debate that, but its not a consequence of Rice's Theorem.

-- 
http://www.apache-ssl.org/ben.html           http://www.links.org/

"There is no limit to what a man can do or how far he can go if he
doesn't mind who gets the credit." - Robert Woodruff

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