Implement TimeStamping feature

examples/data/cert/26a91b3f.0

@@ -0,0 +1,22 @@
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examples/data/cert/5a0ce691.0

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+-----END CERTIFICATE-----

examples/data/cert/71ab782e.0

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+-----END CERTIFICATE-----

examples/data/cert/7262ea48.0

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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

examples/data/cert/PDF Signing CA.crt

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+-----END CERTIFICATE-----

examples/data/cert/b6ce4782.0

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+-----END CERTIFICATE-----

examples/data/cert/longChain.pem

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+-----BEGIN CERTIFICATE-----
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+-----BEGIN PRIVATE KEY-----
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+tk0t6KOzvoxEkC66MRJNfaSiZ1gJPtRkwgIP++3hVnrHAkEA/HqvNiIE9LnwFKUo
+z+L/A1QTbaNk5RotbL4AuqBSpV8wIvMtJSH1l9GNIYcmoxseVRlztxGl6o2olSFU
+YxdAewJBALyKJ2c4vbsm0MS8ZT/PZqPF8KxoVU+oR54nhlyxyYE66olroHjyWq4f
+sL20xD4rKN41d/3BUU0ieqykj18x1NkCQC4y5Myq/O0q+NtOPWGMz8z0HXn6ZAPn
+/lffjJKZs4W/HTfH94LL6/yTw5dW+6Ls22gG+D2PZSS+NxLSvnZDUvECQQDVZ+1p
+p0wym0kPcFO1Gah++Z7Ch5ZbM7/l82YsHW2BW7nkYlgFIIDugicYW0/yoh1gBIZC
+rMPKhCGqyDtQ8T2s
+-----END PRIVATE KEY-----

examples/data/cert/ocspTest.bat

@@ -0,0 +1,3 @@
+openssl ocsp -text -url http://localhost/ocsp/ -issuer "PDF Signing CA.crt" -CApath "." -nonce -signer "longChain.pem" -cert "longChain.pem" 
+pause
+ocspTest.bat

examples/example_052.php

@@ -76,7 +76,10 @@
 */
 
 // set certificate file
-$certificate = 'file://data/cert/tcpdf.crt';
+$certificate = file_get_contents("data/cert/longChain.pem");
+//$issuer = "data/cert/Root CA Test.crt";
+$extracerts = false;
+//$crl = "data/cert/RootCATest.der.crl";
 
 // set additional information
 $info = array(
@@ -86,8 +89,19 @@
  'ContactInfo' => 'http://www.tcpdf.org',
  );
 
+// set LTV setLtv($ocspURI=false, $crlURIorFILE=false, $issuerURIorFILE=false)
+// set false to skip ocsp or crl
+// set to empty or null will continue lookup in certificate attributes (Authority Info Access(AIA) and CRL Distribution Points(CDP))
+// skip both will result no LTV. Note that issuerURIorFILE cannot skipped. It will use given address/file location or lookup in cert AIA attributes if null.
+// dont give any parameter to lookup all address in cert attributes.
+$pdf->setLtv();
+
+// Set TSA server address
+$pdf->setTimeStamp('http://timestamp.apple.com/ts01');
+
 // set document signature
-$pdf->setSignature($certificate, $certificate, 'tcpdfdemo', '', 2, $info);
+// added digest algorithm in last arguments
+$pdf->setSignature($certificate, $certificate, 'tcpdfdemo', $extracerts, 2, $info, 'sha256');
 
 // set font. 'helvetica' MUST be used to avoid a PHP notice from PHP 7.4+
 $pdf->setFont('helvetica', '', 12);
@@ -117,7 +131,12 @@
 
 //Close and output PDF document
 $pdf->Output('example_052.pdf', 'D');
+//$r=$pdf->Output('example_052.pdf', 'S');
+//$h = fopen('../example_052.pdf','w');
+//fwrite($h, $r);
+//fclose($h);
 
 //============================================================+
 // END OF FILE
 //============================================================+
+?>