IMP_Smime::publicKeyInfo PHP Method

    public function publicKeyInfo($cert)
    {
        /* Make sure the certificate is valid. */
        $key_info = openssl_x509_parse($cert);
        if (!is_array($key_info) || !isset($key_info['subject'])) {
            throw new Horde_Crypt_Exception(_("Not a valid public key."));
        }
        /* Add key to the user's address book. */
        $email = $this->_smime->getEmailFromKey($cert);
        if (is_null($email)) {
            throw new Horde_Crypt_Exception(_("No email information located in the public key."));
        }
        /* Get the name corresponding to this key. */
        if (isset($key_info['subject']['CN'])) {
            $name = $key_info['subject']['CN'];
        } elseif (isset($key_info['subject']['OU'])) {
            $name = $key_info['subject']['OU'];
        } else {
            $name = $email;
        }
        return array($name, $email);
    }