python如何对pdf文件进行签名防止篡改？
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生成数字证书并设置密码
# generate new .crt file, it's contained certificate & private key openssl req -x509 -nodes -days 365000 -newkey rsa:1024 -keyout filename.crt -out filename.crt # convert .crt to binar .p12 file openssl pkcs12 -export -in tcpdf.crt -out filename.p12 # get private key from .p12 file, it will ask for passphrase/password, so the generated private key will be encrypted openssl pkcs12 -in filename.p12 -nocerts -out filename.key # get certificate from .p12 file openssl pkcs12 -in filename.p12 -clcerts -nokeys -out filename.crt
利用TCPDF 签名
<?php
/** @var TCPDF $pdf */
$pdf->setSignature('file://PATH-TO-CRT-FILE', 'file://PATH-TO-PRIVATE-KEY-FILE', 'PRIVATE-KEY-FILE-PASSPHRASE', '', 2, $info);github地址https://github.com/harryosmar/php-pdf-digital-signature
by thinkfuture
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