Re: Code breakers beat security scheme of car locks, gas pumps

From: robert j. kolker (nowhere_at_nowhere.net)
Date: 02/06/05 

Date: Sun, 06 Feb 2005 09:49:08 -0500

Guy Gordon wrote:

> "robert j. kolker" <nowhere@nowhere.net> wrote:
>
>
>>The axiom of axioms in cryptography is that the security is in the key,
>>not the alogorithm. ANY alogorithm A can conceive, B can analyze (recall
>>Enigma during WW2). Key management is the key to cryptographic security.
>
>
> No key is of any use if the algorithm is a simple XOR, or the implementation has
> a back-door.

The back door is not an essential part of cryptography. One can always
engineer an ecryption/decryption scheme -without- a back door. XOR works
fine with a one time pad. Key management means throwing away the random
key after just one use.

Bob Kolker

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