Hm. I see this in the same way I see extracting one or two pieces of information from a web page. I can either:

  1. Laboriously parse the entire structure of the document into a complex data structure and then traverse it to obtains the bits;
  2. Or I can treat the whole thing as unstructured data and just grab the bits I need.

In the OPs case, given he only wants a yay or nay answer; and the odds of a false positive are so minuscule; parsing the entire file is a waste of cpu cycles, time, and effort.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I'm with torvalds on this
In the absence of evidence, opinion is indistinguishable from prejudice. Agile (and TDD) debunked

In reply to Re^4: Search hex string in vary large binary file by BrowserUk
in thread Search hex string in vary large binary file by westrock2000

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