Incorret digest and signature value

[pedroserretti]

Hi, i'm getting an error in xml signing

          SignedXml sig = SignedXml();
          sig.signatureAlgorithm = "http://www.w3.org/2000/09/xmldsig#rsa-sha1";
          sig.canonicalizationAlgorithm = "http://www.w3.org/TR/2001/REC-xml-c14n-20010315";

          for (XmlAttribute atributo in tagElements.first.attributes) {
            if (atributo.name.local == 'Id') {
              sig.addReference("//*[local-name()='infNFe']", ["http://www.w3.org/2000/09/xmldsig#enveloped-signature", "http://www.w3.org/TR/2001/REC-xml-c14n-20010315"], "http://www.w3.org/2000/09/xmldsig#sha1", "#${atributo.value}");
            }
          }

          Directory tempDir = await getTemporaryDirectory();
          File tempFile = File('${tempDir.path}\\chave_privada.pem');
          tempFile.writeAsStringSync(sChave);

          sig.signingKey = chaveBytes;
          sig.keyInfoProvider = FileKeyInfo(tempFile.path);
          sig.computeSignature(xmlString);
          XmlDocument newDocument = XmlDocument.parse(sig.signedXml);
          await File(arquivoXml).writeAsString(newDocument.toXmlString(pretty: true));

I'm trying to sign my XML, but digestValue and signatureValue are incorrects, i'm doing the same function in Csharp to signing, and generate it correctly. Can anyone help me, please?

[scribetw]

Hi,

Please try using the original Node.js version of xml-crypto@3.2.0 to see if the result is correct.

If correct, the Dart porting may have some bugs. Or the bug was from the original implementation.

Anyway, it's better if you can provide the sample XML file for further debugging.

[pedroserretti]

Hi,

Please try using the original Node.js version of xml-crypto@3.2.0 to see if the result is correct.

If correct, the Dart porting may have some bugs. Or the bug was from the original implementation.

Anyway, it's better if you can provide the sample XML file for further debugging.

Actually, i needed to remove all whitespaces before sign my xml. To resolve, i added document.normalize(trimAllWhitespaces: true) and my problem was solved.