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All I will need to check is AAAAAAAA - AZZZZZZZ.

So I will only have to check the A's but will checking the A's be faster knowing the first char , I can't see why it would be as it would have to check every combination anyway?

user7668482
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  • You literally asked the same question here https://security.stackexchange.com/questions/214502/how-long-to-crack-an-8-digit-wpa2-hash-if-first-char-is-known – yeah_well Aug 02 '19 at 07:21

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You will have to check AAAAAAAA-AZZZZZZZ, but that's still 26 times faster than checking AAAAAAAA-ZZZZZZZZ.

That speed increase is significant, so knowing the first character (or any other character) is really worth it.

Benoit Esnard
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