6. The method of claim 4 , further comprising: serializing the first Bloom filter, the second Bloom filter and the list of token type patterns into an index file.
6. The method of claim 4 , further comprising: serializing the first Bloom filter, the second Bloom filter and the list of token type patterns into an index file. 7. The method of claim 6 , further comprising: periodically distributing an updated index file over a secure network.