openssl_spki_export_challenge

(PHP 5 >= 5.6.0)

openssl_spki_export_challenge — Exports the challenge assoicated with a signed public key and challenge

说明

string openssl_spki_export_challenge ( string &$spkac )

Exports challenge from encoded signed public key and challenge

参数

spkac: Expects a valid signed public key and challenge

返回值

Returns the associated challenge string or NULL on failure.

错误／异常

Emits an E_WARNING level error if an invalid argument is passed via the spkac parameter.

范例

Example #1 openssl_spki_export_challenge() example

Extracts the associated challenge string or NULL on failure.

  <?php
$pkey  =  openssl_pkey_new ( 'secret password' );
 $spkac  =  openssl_spki_new ( $pkey ,  'challenge string' );
 $challenge  =  openssl_spki_export_challenge ( preg_replace ( '/SPKAC=/' ,  '' ,  $spkac ));
 ?>

Example #2 openssl_spki_export_challenge() example from <keygen>

Extracts the associated challenge string issued from the <keygen> element

  <?php
$challenge  =  openssl_spki_export_challenge ( preg_replace ( '/SPKAC=/' ,  '' ,  $_POST [ 'spkac' ]));
 ?>
<keygen name="spkac" challenge="challenge string" keytype="RSA">

参见

openssl_spki_new() - Generate a new signed public key and challenge
openssl_spki_verify() - Verifies a signed public key and challenge
openssl_spki_export() - Exports a valid PEM formatted public key signed public key and challenge
openssl_md_method()
openssl_csr_new() - Generates a CSR
openssl_csr_sign() - Sign a CSR with another certificate (or itself) and generate a certificate