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(PHP Extension) SII Chile - FRMT Signature Computation and Add to XMLCompute the FRMT signature and add to the XML. This is the RSA signature of the SHA-1 digest of the "flattened" DD element.
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Also see: Compute the FRMA Signature and Add to XML $xml = new CkXml(); // Load the unsigned XML that contains the following: // <DTE version="1.0"> // <Documento ID="F60T33"> // <TED version="1.0"> // <DD> // ... // <CAF version="1.0"> // <DA> // ... // </DA> // <FRMA algoritmo="SHA1withRSA">...</FRMA> // </CAF> // ... // </DD> // ... The FRMT will be added here in another example ... // </TED> // </Documento> // </DTE> $success = $xml->LoadXmlFile('qa_data/xml_dsig/sii_cl/test_1.xml'); if ($success == false) { print 'Failed to load initial XML file.' . "\n"; exit; } // Get a reference to the "DD" element // ddXml is a CkXml $ddXml = $xml->FindChild('Documento|TED|DD'); if ($xml->get_LastMethodSuccess() == false) { print 'Failed to find DD element' . "\n"; exit; } // We need to get the "flattened" DD XML where: // - No whitespace between elements. // - The 5 pre-defined entities are converted. // - The text is encoded in the ISO-8859-1 character set (Latin-1), $sbFlattened = new CkStringBuilder(); $ddXml->put_EmitCompact(true); $ddXml->put_EmitXmlDecl(false); $ddXml->GetXmlSb($sbFlattened); // Compute the SHA-1 message digest of the iso-8859-1 byte representation, // and sign it with our RSA private key, getting the result in base64 format. $privKey = new CkPrivateKey(); $success = $privKey->LoadAnyFormatFile('qa_data/rsa/rsaPrivKey_pkcs8.pem',''); if ($success == false) { print $privKey->lastErrorText() . "\n"; exit; } $rsa = new CkRsa(); $rsa->ImportPrivateKeyObj($privKey); $rsa->put_EncodingMode('base64'); $rsa->put_Charset('iso-8859-1'); $sig = $rsa->signStringENC($sbFlattened->getAsString(),'sha1'); // Add the FRMT signature element to the XML. $xml->UpdateChildContent('Documento|TED|FRMT',$sig); $xml->UpdateAttrAt('Documento|TED|FRMT',true,'algoritmo','SHA1withRSA'); // See what we have: $xml->put_EmitCompact(false); $xml->put_EmitXmlDecl(true); print $xml->getXml() . "\n"; ?> |
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