Certificate.php

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<?php

namespace SAML2\Utilities;

class Certificate
{
    const CERTIFICATE_PATTERN = '/^-----BEGIN CERTIFICATE-----([^-]*)^-----END CERTIFICATE-----/m';

    public static function hasValidStructure($certificate)
    {
        return !!preg_match(self::CERTIFICATE_PATTERN, $certificate);
    }

    public static function convertToCertificate($X509CertificateContents)
    {
        return "-----BEGIN CERTIFICATE-----\n"
                . chunk_split($X509CertificateContents, 64)
                . "-----END CERTIFICATE-----\n";
    }
}