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Full Version: Bcrypt Prefix
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Help to work out prefix for bcrypt hash to crack.

I have digest for bcrypt hash and know that it has 4 rounds, which doesn't explain me what prefix will have to come with hash.

$2a$10
$2a$13
$2y$10
$2b$10

Please anyone can explain which prefix have to be used?
if your cost factor is 4 (note: bcrypt does not have a iteration/round indicator) your prefix is probably $2y$4
thank you