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openssl_csr_sign

openssl_csr_sign

Sign a CSR with another certificate (or itself) and generate a certificate

 **openssl_csr_sign**  $csr  $ca_certificate  $private_key int $days  $options int $serial  $serial_hex
generates an x509 certificate from the given .

openssl_csr_sign

csr A previously generated by . It can also be the path to a encoded when specified as or an exported string generated by . openssl_csr_new``openssl_csr_export

ca_certificate The generated certificate will be signed by . If is null, the generated certificate will be a self-signed certificate. ca_certificate``ca_certificate

private_key is the private key that corresponds to . private_key``ca_certificate

days specifies the length of time for which the generated certificate will be valid, in days. days

options You can finetune the signing by . See for more information about . options``openssl_csr_new``options

serialAn optional the serial number of issued certificate. If not specified it will default to 0.

serial_hex An optional hexadecimal string representing the serial number of the issued certificate. If set, it takes precedence over the parameter value. If not specified or set to null, the parameter value is used instead. serial``serial

Returns an on success, false on failure. OpenSSLCertificate

Voorbeeld: example - signing a (how to implement your own 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";
}
?>