It's better than that. If A is the number of identifiers in use, and B is the size of the identifier pool, the probability of collision is on the order of A^2/2B (where A and B are large, and A^2 << B). So if you assume that everyone on the planet (6E9) has a million public keys, then the probability of collision somewhere in that entire keyspace is under 1 in 40 million billion.
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timeasmymeasure
Re: "PKI needs more than a name"
Date: 2002-06-11 06:34 am (UTC)