openssl_csr_sign

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

openssl_csr_sign用另一个证书签署 CSR(或者本身)并且生成一个证书

说明

openssl_csr_sign(
    OpenSSLCertificateSigningRequest|string $csr,
    OpenSSLCertificate|string|null $ca_certificate,
    #[\SensitiveParameter] OpenSSLAsymmetricKey|OpenSSLCertificate|array|string $private_key,
    int $days,
    ?array $options = null,
    int $serial = 0,
    ?string $serial_hex = null
): OpenSSLCertificate|false

openssl_csr_sign() 从给定的 CSR 生成 x509 证书。

注意: 必须安装有效的 openssl.cnf 以保证此函数正确运行。参考有关安装的说明以获得更多信息。

参数

csr

openssl_csr_new() 函数生成的 CSR。 也可以是由类似file://path/to/csr格式指定的指向 PEM 编码的 CSR 路径,或者是一个由openssl_csr_export()函数生成的字符串。

ca_certificate

生成的证书将由ca_certificate签名。 如果ca_certificatenull, 生成的证书将是自签名证书。

private_key

private_keyca_certificate 证书对应的私钥。

days

days 指定生成的证书在几天内有效的时间长度。

options

可以通过 options 确定 CSR 签名。 查看 openssl_csr_new() 方法获取 options 的更多相关信息。

serial

可选的发行证书编号。如果没有指定默认值为0.

返回值

成功时返回 OpenSSLCertificate,失败则返回 false

更新日志

版本 说明
8.0.0 成功时,此函数现在返回 OpenSSLCertificate 实例;之前返回类型 OpenSSL X.509resource
8.0.0 csr 现在接受 OpenSSLCertificateSigningRequest 实例;之前接受类型 OpenSSL X.509 CSRresource
8.0.0 ca_certificate 现在接受 OpenSSLCertificate 实例;之前接受类型 OpenSSL X.509resource
8.0.0 private_key 现在接受 OpenSSLAsymmetricKeyOpenSSLCertificate 实例;之前接受类型 OpenSSL keyOpenSSL X.509resource

示例

示例 #1 openssl_csr_sign() 示例——签署 CSR(如何实现自己的 CA)

<?php
// Let's assume that this script is set to receive a CSR that has
// been pasted into a textarea from another page
$csrdata = $_POST["CSR"];

// We will sign the request using our own "certificate authority"
// certificate. You can use any certificate to sign another, but
// the process is worthless unless the signing certificate is trusted
// by the software/users that will deal with the newly signed certificate

// We need our CA cert and its private key
$cacert = "file://path/to/ca.crt";
$privkey = array("file://path/to/ca.key", "your_ca_key_passphrase");

$usercert = openssl_csr_sign($csrdata, $cacert, $privkey, 365, array('digest_alg'=>'sha256') );

// Now display the generated certificate so that the user can
// copy and paste it into their local configuration (such as a file
// to hold the certificate for their SSL server)
openssl_x509_export($usercert, $certout);
echo
$certout;

// Show any errors that occurred here
while (($e = openssl_error_string()) !== false) {
echo
$e . "\n";
}
?>