SHA256WithRSA簽名算法(PHP實現)

1.需要開啟PHP的php_openssl擴展；
2.生成公鑰和密鑰；

<?php
header("Content-type:text/html;charset=utf-8");
$configargs = array('config'=>'D:phpextrasopensslopenssl.cnf'); //路徑
$res = openssl_pkey_new($configargs);
openssl_pkey_export($res,$pri, null, $configargs);
$d= openssl_pkey_get_details($res);




$pub = $d['key'];
var_dump($pri,$pub);
die;

3.簽名算法

<?php
$binary_signature = "";
$algo = "SHA256";
openssl_sign($sign, $binary_signature, $prikey, $algo);
$sign = base64_encode($binary_signature);

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