这篇文章主要介绍了php实现往pdf中加数字签名操作,结合完整实例形式详细分析了php基于tcpdf插件实现数字签名操作的具体步骤与相关技巧,并附带crt加密文件、源码等供读者下载,需要的朋友可以参考下
本文实例讲述了PHP实现往pdf中加数字签名操作。分享给大家供大家参考，具体如下：
SetCreator(PDF_CREATOR);
$pdf->SetAuthor('Nicola Asuni');
$pdf->SetTitle('TCPDF Example 052');
$pdf->SetSubject('TCPDF Tutorial');
$pdf->SetKeywords('TCPDF,PDF,example,test,guide');
// set default header data
$pdf->SetHeaderData(PDF_HEADER_logo,PDF_HEADER_logo_WIDTH,PDF_HEADER_TITLE.' 052',PDF_HEADER_STRING);
// set header and footer fonts
$pdf->setHeaderFont(Array(PDF_FONT_NAME_MAIN,'',PDF_FONT_SIZE_MAIN));
$pdf->setFooterFont(Array(PDF_FONT_NAME_DATA,PDF_FONT_SIZE_DATA));
// set default monospaced font
$pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);
// set margins
$pdf->SetMargins(PDF_MARGIN_LEFT,PDF_MARGIN_TOP,PDF_MARGIN_RIGHT);
$pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
$pdf->SetFooterMargin(PDF_MARGIN_FOOTER);
// set auto page breaks
$pdf->SetAutoPageBreak(TRUE,PDF_MARGIN_BOTTOM);
// set image scale factor
$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
// set some language-dependent strings (optional)
if (@file_exists(dirname(__FILE__).'/lang/eng.PHP')) {
require_once(dirname(__FILE__).'/lang/eng.PHP');
$pdf->setLanguageArray($l);
}
// ---------------------------------------------------------
/*
NOTES:
- To create self-signed signature: openssl req -x509 -nodes -days 365000 -newkey rsa:1024 -keyout tcpdf.crt -out tcpdf.crt
- To export crt to p12: openssl pkcs12 -export -in tcpdf.crt -out tcpdf.p12
- To convert pfx certificate to pem: openssl pkcs12 -in tcpdf.pfx -out tcpdf.crt -nodes
*/
// set certificate file
$certificate = 'file://data/cert/tcpdf.crt';
$certificate = 'file://'.realpath('./data/cert/tcpdf.crt');
// set additional information
$info = array(
'Name' => 'TCPDF','Location' => 'Office','Reason' => 'Testing TCPDF','ContactInfo' => 'http://www.tcpdf.org',);
// set document signature
$pdf->setSignature($certificate,$certificate,'tcpdfdemo',2,$info);
// set font
$pdf->SetFont('helvetica',12);
// add a page
$pdf->AddPage();
// print a line of text
$text = 'This is a To validate this signature you have to load the List of Trusted Identities.
For more information check the source code of this example and the source code documentation for the setSignature() method.
www.tcpdf.org';
$pdf->writeHTML($text,0);
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// *** set signature appearance ***
// create content for signature (image and/or text)
$pdf->Image('images/tcpdf_signature.png',180,60,15,'PNG');
// define active area for signature appearance
$pdf->setSignatureAppearance(180,15);
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// *** set an empty signature appearance ***
$pdf->addEmptySignatureAppearance(180,80,15);
// ---------------------------------------------------------
//Close and output PDF document
$pdf->Output('example_052.pdf','D');
//============================================================+
// END OF FILE
//============================================================+
其中tcpdf_include.PHP文件(源自tcpdf插件)如下：
eng.PHP文件如下：
补充：
tcpdf.crt文件点击此处本站下载。
tcpdf插件点击此处本站下载。
更多关于PHP相关内容感兴趣的读者可查看本站专题：《》、《》、《》、《》、《》、《》及《PHP字符串(string)用法总结》
希望本文所述对大家PHP程序设计有所帮助。
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