PHP: cybercash_decr

Description

array cybercash_decr ( string wmk, string sk, string inbuff )

The function returns an associative array with the elements "errcode" and, if "errcode" is FALSE, "outbuff" (string), "outLth" (long) and "macbuff" (string).

cybercash_decr

scott at mha dot ca
02-Oct-2001 08:09


assuming that you have a function called "read_value_pairs" which will convert a urlencoded string into an array of values .. this should more-or-less work:





$vars = read_value_pairs($response_from_http_form_post);





$vars["message"] = cybercash_base64_decode($vars["message"]);


$vars["mac"] = cybercash_base64_decode($vars["mac"]);


$decr = cybercash_decr($merchant_key, $vars["session-key"], $vars["message"]);





if($decr["errcode"]) {


    $response["MStatus"]="failure-hard";


    $response["MErrMsg"]="error talking to server.";


} else if($decr["macbuff"] != $vars["mac"]) {


    $response["MStatus"]="failure-hard";


    $response["MErrMsg"]="signature does not match.";


} else {


    $response = read_value_pairs($decr["outbuff"]);


}