Custom Algorithm

Hello All, 

I am writing to you today to find out if its possible for anyone to help me implement a custom algorithm in Hashcat, a person on here found the algorithm for my hashes and the script goes like this.

Code:
function calculate_hash($password, $salt)  { 
$begin="--".$salt."--"; 
$end="--".$password."----"; 
$hash=""; 
for ($round=0; $round<10; $round++)  $hash=sha1($begin.$hash.$end); 
return $hash; 
}


made a module for HM ( https://www.sendspace.com/file/1hk8tr ) but its still slow since its running on CPU. It would mean a lot if you can help me out.


hashalt 

f64eae67783e54cd39d00c3eac301a30856fcf65:kR38NQ_vQRSc_rQ4FnuB 
9c5063c8726b259dc4ece6074d12d094c1d1feea:yD7FvdKF65umfp2Xmjrm


hash:pass 

f64eae67783e54cd39d00c3eac301a30856fcf65:baydog 
9c5063c8726b259dc4ece6074d12d094c1d1feea:tntt1982


Thank you.