REPOST: Re: help ragarding licensing keys
From: Dave Howe (DaveHowe_at_hawkswing.d-mon.co.uk)
Date: 10/24/05
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Date: Mon, 24 Oct 2005 17:47:38 +0100
parwal.sandeep@gmail.com wrote:
> hello all ,
>
> i have an algo to generate a random alphanumeric key ..
> i want to chk its randomness... so that no two keys are same and its
> not guessable.. is there any test or procedure for that
I believe you are following the wrong approach.
Instead, consider your key to be a simple string plus a checksum. to generate
the checksum, take your simple string and add a secret fixed string, then hash.
the hash or a subset of it is your checksum, and original string plus checksum
is your key.
If you are freed from the constraint that a key be typable (supplied via
email, say) then you can use something like pki, but again just use a simple
string (generation of which is trivial)
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From: Dave Howe <DaveHowe@hawkswing.d-mon.co.uk>
Control: cancel <djj37a$rn8$1$8300dec7@news.demon.co.uk>
Subject: Cancel "Re: help ragarding licensing keys"
Newsgroups: de.alt.test,mn.test,sci.crypt
Date: Mon, 24 Oct 2005 18:23:06 GMT
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