29 May '12, 4pm

Should you design cryptography in software or hardware? This tutorial will reveal the secret...

When there is no room for software execution because the chip does not embed any core, cryptography in hardware is the only solution. This situation is typical with consumer products where costs are under pressure and security is not a selling advantage. In fact, this is where and how manufacturers want to protect their IPs against counterfeiters or competitors. While this defensive feature is not claimed or promoted to the customer, it is nevertheless present at lowest possible cost. Keeping those costs low means the smallest die size, which implies that the chip functions are minimized. We usually only see authentication chips in these situations. The chips perform symmetrical cryptographic computations which involve a challenge and response: sending a secret and receiving verification of identity back. Symmetrical challenge-and-response cryptography is now routinely use...

Full article: http://www.maxim-ic.com/app-notes/index.mvp/id/5421

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Blog » Blog Archive » Tutorial series on

Blog » Blog Archive » Tutorial series on

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