* Posts by Nigel Smart

7 posts • joined 5 Jun 2008

Someone has broken into your systems. Now what?

Nigel Smart
Holmes

Re: All good stuff but...

The fact that SMEs find this stuff hard, and that a lot of breaches get the hashed password file, and then just brute force it (since most humans pick dumb passwords) is one of the reasons Dyadic Security created its DSM technology (http://www.dyadicsec.com/technology/). One of the main use cases is to encrypt the entire password file using probabilistic encryption, and so render such brute force hacking impossible. Of course the DSM can be used to protect all sorts of similar applications. But the protection of the password file/DB from breaches is probably the easiest to understand, and it also protects against law enforcement asking you to reveal users passwords as well by spreading the trust over many countries.

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Cameras roll on 'blockbuster' new Who series

Nigel Smart
Holmes

Re: X in SPAAAAAAAAAAAACCCCCCCEEEEEEEEE!

> eqyptians IN SPAAAACE!!!!

Old Fourth Doctor story of Pyramids of Mars. Not exactly Egyptions, but mummies galore

: Sherlock since there is no Dr Who icon

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1 euro in every 7 spent on a Visa card

Nigel Smart

> Fraud moving to the internet where chip/pin can't help.

Actually they COULD roll out the CAP system used for online banking in the UK to authenticate the web based credit card transaction. This would be better than the Verified by Visa rubbish

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Nigel Smart

> Fraud moving to the internet where chip/pin can't help.

They could use the CAP system which is used for online banking in the UK. After all they have this set up in most banks

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HP boffin claims million-dollar maths prize

Nigel Smart

Factoring and NP

Factoring is indeed not believed to be NP complete. But it certainly lies in NP, since if I gave you a factor you could check whether my factor was correct very fast.

So if P=NP then factoring would be easy and factoring based crypto (indeed almost all practically deployed crypto) would be broken.

But if P<>NP we still have no idea whether factoring is easy or hard.

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Confusion over 'secret code' in US military Cyberforce crest

Nigel Smart
Alert

But MD5 is broken...

They are still using MD5! I suspect there is another text which collides and that finding this is the real challenge

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Bletchley Park rattles tin for urgent repairs

Nigel Smart
Linux

Online Donations

If you want to donate online to the Computing Museum part then go to....

http://www.tnmoc.co.uk/Donations.htm

Would also recommend the place for a visit, it also quite a good place

to hold meetings etc

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