wp-includes/class-phpass.php:121$input function gensalt_private($input) { $output = '$P$'; $output .= $this->itoa64[min($this->iteration_count_log2 + 5, 30)]; $output .= $this->encode64($input, 6); return $output; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-phpass.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.