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configuring-hasher.md

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Configuring the hasher

Note: Only the Argon2SplitTokenFactory can be configured.

To configure a SplitToken factory pass an associative array of options to the Factory constructor.

Option Description
'memory_cost' amount of memory in bytes that Argon2lib will use while trying to compute a hash.
'time_cost' amount of time that Argon2lib will spend trying to compute a hash.
'threads' number of threads that Argon2lib will use. 
$splitTokenFactory = new Argon2SplitTokenFactory([
    'memory_cost' => PASSWORD_ARGON2_DEFAULT_MEMORY_COST,
    'time_cost' => PASSWORD_ARGON2_DEFAULT_TIME_COST,
    'threads' => PASSWORD_ARGON2_DEFAULT_THREADS,
]);

Tip: You can create as many factory instances as needed, not all usage requires high memory or time cost. The shorter the lifetime of a token the lower you can keep these values.