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<?php
declare(strict_types=1);
namespace SimpleSAML\XMLSecurity\Utils;
use Exception;
/**
* Collection of Utility functions specifically for certificates
*/
class Certificate
{
* The pattern that the contents of a certificate should adhere to
public const PUBLIC_KEY_PATTERN = '/^-----BEGIN CERTIFICATE-----([^-]*)^-----END CERTIFICATE-----/m';
public const PRIVATE_KEY_PATTERN = '/^-----BEGIN RSA PRIVATE KEY-----([^-]*)^-----END RSA PRIVATE KEY-----/m';
* @param string $certificate
* @param string $pattern
*
* @return bool
public static function hasValidStructure(string $certificate, string $pattern = self::PUBLIC_KEY_PATTERN): bool
return !!preg_match($pattern, $certificate);
}
* @param string $X509CertificateContents
* @return string
public static function convertToCertificate(string $X509CertificateContents): string
return "-----BEGIN CERTIFICATE-----\n"
. chunk_split($X509CertificateContents, 64, "\n")
. "-----END CERTIFICATE-----";
* @param string $key The PEM-encoded key
* @param string $pattern The pattern to use
* @return string The stripped key
public static function stripHeaders(string $key, string $pattern = self::PUBLIC_KEY_PATTERN)
$matches = [];
$result = preg_match($pattern, $key, $matches);
if ($result === false) {
throw new Exception('Could not find content matching the provided pattern.');
/** @psalm-suppress EmptyArrayAccess */
return preg_replace('/\s+/', '', $matches[1]);
simplesamlphp /
xml-security
