NFC-102 Cert fix

Signed-off-by: Sander Kondratjev <[email protected]>

Author: SanderKondratjevNortal

src/certificate/CertificateLoader.php

@@ -26,6 +26,7 @@
 
 namespace web_eid\web_eid_authtoken_validation_php\certificate;
 
+use SodiumException;
 use web_eid\web_eid_authtoken_validation_php\exceptions\CertificateDecodingException;
 use phpseclib3\File\X509;
 use BadFunctionCallException;
@@ -41,7 +42,7 @@ public function __construct()
     /**
      * Loads certificate files from paths into array of OpenSSLCertificate
      * @param string ...$resourceNames array of certificate paths
-     * 
+     *
      * @return array
      * @throws CertificateDecodingException
      */
@@ -73,8 +74,14 @@ public static function decodeCertificateFromBase64(string $base64): X509
                 "-----END CERTIFICATE-----\n";
         }
 
-        if (!$cert->loadX509($base64)) {
-            throw new CertificateDecodingException("unverifiedSigningCertificate is not base64 encoded");
+        try {
+            if (!$cert->loadX509($base64)) {
+                throw new CertificateDecodingException(
+                    "unverifiedSigningCertificate is not base64 encoded");
+            }
+        } catch (SodiumException) {
+            throw new CertificateDecodingException(
+                "unverifiedSigningCertificate is not base64 encoded");
         }
 
         return $cert;