Created
October 29, 2019 15:42
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<?php | |
$inFile = "encrypted.xml"; | |
$outFile = "decrypted.xml"; | |
$privateKeyFile = "private_key.pem"; | |
$header = '<?xml version="1.0" encoding="UTF-8"?>'; | |
//----------------------------------------------- | |
function rsaDecryptWithKeyString($encryptedData, $rsaPrivKey){ | |
$key = openssl_get_privatekey($rsaPrivKey); | |
$data = base64_decode($encryptedData); | |
$outBuffer = ''; | |
if (!$key || !openssl_private_decrypt($data,$outBuffer,$key,OPENSSL_PKCS1_OAEP_PADDING)){ | |
$outBuffer = $encryptedData; //Error. can't decrypt | |
} | |
return $outBuffer; | |
} | |
function startElement($parser, $name, $attrs) | |
{ | |
global $ofile; | |
fwrite($ofile, "<$name>"); | |
} | |
function endElement($parser, $name) | |
{ | |
global $ofile; | |
fwrite($ofile,"</$name>\n"); | |
} | |
function characterDataHandler($parser, $data){ | |
global $ofile,$rsaPrivKey; | |
fwrite($ofile, rsaDecryptWithKeyString($data, $rsaPrivKey)); | |
} | |
$rsaPrivKey = file_get_contents($privateKeyFile); | |
$xml_parser = xml_parser_create(); | |
xml_set_element_handler($xml_parser, "startElement", "endElement"); | |
xml_set_character_data_handler( $xml_parser, "characterDataHandler"); | |
if (!($fp = fopen($inFile, "r"))) { | |
die("could not open XML input"); | |
} | |
$ofile = fopen($outFile, 'w'); | |
fwrite($ofile, $header); | |
while ($data = fread($fp, 4096)) { | |
if (!xml_parse($xml_parser, $data, feof($fp))) { | |
die(sprintf("XML error: %s at line %d", | |
xml_error_string(xml_get_error_code($xml_parser)), | |
xml_get_current_line_number($xml_parser))); | |
} | |
} | |
xml_parser_free($xml_parser); | |
fclose($ofile); | |
?> |
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