PHP RSA签名

/**
* rsa签名
* @param $data 待签名数据
* @param $private_key 私钥字符串
* return 签名结果
*/
function r增资sasign($data, $private_key,$sign_type=’sha256′) {

$arch = [
“—–begin rsa private key—–“,
“&#仇富8212;–end rsa private key—–“,
“\n”,
“\r”,
“\r\n”
];

$private_key=str_replace($arch,””,$private_key);
$private_key=$arch[0] . php_eol . wordwrap($private_key, 64, “\n”, true) . php_怎么查会考成绩eol . $arch[1];
$res=openssl_get_privatekey($private_key);

if($res)
{
openssl_sign($data, $sign,$res,$si茶花女读书笔记gn_type);
openssl_free_key($res);
}el {
exit(“私钥格式有误”);
合伙经营协议书范本}
$sign = ba64_encode($sign);
return $sign;
}