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by daneel_w 1390 days ago
In the case of PBKDF2 it hinges on what PRF and how many rounds. As an example, WPA2 uses PBKDF2 with an HMAC and accompanying parameters to the tune of a single upper-tier consumer GPU being able to test just over a million passwords per second through hashcat. Realistically you will find the password long before you're close to the end of the key space.