php man page for openssl_csr_sign

OPENSSL_CSR_SIGN(3)							 1						       OPENSSL_CSR_SIGN(3)

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

SYNOPSIS
       resource openssl_csr_sign (mixed  $csr, mixed  $cacert, mixed  $priv_key, int  $days, [array  $configargs], [int  $serial])

DESCRIPTION
       openssl_csr_sign(3) generates an x509 certificate resource from the given CSR.

       Note

	       You need to have a valid openssl.cnf installed for this function to operate correctly. See the notes under the installation section
	      for more information.

PARAMETERS
	      o $csr
		- A CSR previously generated  by  openssl_csr_new(3).  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(3).

	      o $cacert
		-  The	generated  certificate will be signed by $cacert. If $cacert is NULL, the generated certificate will be a self-signed cer-
		tificate.

	      o $priv_key
		-$priv_key is the private key that corresponds to $cacert.

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

	      o $configargs
		- You can finetune the CSR signing by $configargs. See openssl_csr_new(3) for more information about $configargs.

	      o $serial
		- An optional the serial number of issued certificate. If not specified it will default to 0.

RETURN VALUES
	Returns an x509 certificate resource on success, FALSE on failure.

EXAMPLES
       Example #1

	      openssl_csr_sign(3) 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 . "
";
	      }
	      ?>

PHP Documentation Group 												       OPENSSL_CSR_SIGN(3)