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(PHP 4 >= 4.2.0, PHP 5)
openssl_csr_sign — Sign a CSR with another certificate (or itself) and generate a certificate
$csr
, mixed $cacert
, mixed $priv_key
, int $days
[, array $configargs
[, int $serial
= 0
]] )openssl_csr_sign() generates an x509 certificate resource from the given CSR.
Note: 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。
csr
A CSR previously generated by openssl_csr_new() . It can also be the path to a PEM encoded CSR when specified as file://path/to/csr or an exported string generated by openssl_csr_export() .
cacert
The generated certificate will be signed by cacert
.
If cacert
is NULL
, the generated certificate
will be a self-signed certificate.
priv_key
priv_key
is the private key that corresponds to
cacert
.
days
days
specifies the length of time for which the
generated certificate will be valid, in days.
configargs
You can finetune the CSR signing by configargs
.
See openssl_csr_new() for more information about
configargs
.
serial
An optional the serial number of issued certificate. If not specified it will default to 0.
Returns an x509 certificate resource on success, FALSE
on failure.
Example #1 openssl_csr_sign() example - signing a CSR (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 );
// 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" ;
}
?>
[#1] Sriraam [2015-08-21 20:58:44]
config_section_section is incorrect. The correct keyword to use is "config_section_name".
[#2] Kai Sellgren [2009-02-20 11:05:33]
You can use file_get_contents() to directly pass the content instead of giving file paths.
Also, if you get an error "sec_error_reused_issuer_and_serial", put a serial into the last parameter:
<?php
$privkey = array(file_get_contents('ca.key'),"your_ca_key_passphrase");
$usercert = openssl_csr_sign($csrdata, file_get_contents('ca.crt'),$privkey,365,NULL,'06');
openssl_x509_export($usercert,$certout);
file_put_contents('serverCASigned.crt',$certout);
?>
In that above example the serial was "06".
[#3] thomas dot lussnig at bewegungsmelder dot de [2002-07-11 08:34:53]
Here is an sample how to create valid X.509 Public and Private Key (cert/key).
When not using self signed the 4.2.1 segault. You need the CVS code at least for openssl.
<?php
Header("Content-Type: text/plain");
$CA_CERT = "CA.cert.pem";
$CA_KEY = "CA.key.pem";
$req_key = openssl_pkey_new();
if(openssl_pkey_export ($req_key, $out_key)) {
$dn = array(
"countryName" => "DE",
"stateOrProvinceName" => "Frankfurt",
"organizationName" => "smcc.net",
"organizationalUnitName" => "E-Mail",
"commonName" => "Testcert"
);
$req_csr = openssl_csr_new ($dn, $req_key);
$req_cert = openssl_csr_sign($req_csr, "file://$CA_CERT", "file://$CA_KEY", 365);
if(openssl_x509_export ($req_cert, $out_cert)) {
echo "$out_key\n";
echo "$out_cert\n";
}
else echo "Failed Cert\n";
}
else echo "FailedKey\n";
?>
[#4] eric at ypass dot net [2002-06-13 16:13:30]
To generate a self-signed certificate, pass NULL as the signing certificate (2nd parameter). For example:
$req_key = openssl_pkey_new();
$dn = array(
"countryName" => "US",
"stateOrProvinceName" => "Colorado",
"organizationName" => "yPass.net",
"organizationalUnitName" => "yPass.net",
"commonName" => "yPass.net Root Certificate"
);
$req_csr = openssl_csr_new($dn, $req_key);
$req_cert = openssl_csr_sign($req_csr, NULL, $req_key, 365);