one based index

Author: msetina

signxml/xades/xades.py

@@ -297,9 +297,9 @@ def _verify_cert_digests(self, verify_result: VerifyResult):
             if signing_cert is not None and signing_cert_v2 is not None:
                 raise InvalidInput("Expected to find exactly one of xades:SigningCertificate or xades:SigningCertificateV2")
             if signing_cert is not None:
-                self._verify_cert_digest(signing_cert, expect_cert=cert_from_key_info,idx=idx)
+                self._verify_cert_digest(signing_cert, expect_cert=cert_from_key_info,idx=idx+1)
             elif signing_cert_v2 is not None:
-                self._verify_cert_digest(signing_cert_v2, expect_cert=cert_from_key_info,idx=idx)
+                self._verify_cert_digest(signing_cert_v2, expect_cert=cert_from_key_info,idx=idx+1)
 
     def _verify_signature_policy(self, verify_result: VerifyResult, expect_signature_policy: XAdESSignaturePolicy):
         signed_signature_props = self._find(verify_result.signed_xml, "xades:SignedSignatureProperties")