--- title: "XmlElementSigner" description: "Namespace: Lacuna.Pki.Xml" canonical: "https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlElementSigner" locale: "pt-BR" product: "PKI SDK" last_updated: "2026-06-02" --- # XmlElementSigner **Namespace:** `Lacuna.Pki.Xml` **Assembly:** `Lacuna.Pki` _Class_ Provides methods for creating a XML signature of an specific XML element in a XML document ```csharp public class XmlElementSigner : XmlSigner ``` **Hierarquia:** [`object`](https://learn.microsoft.com/dotnet/api/system.object) → [`XmlSigner`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner) → `XmlElementSigner` ## Construtores ### `XmlElementSigner()` ```csharp public XmlElementSigner() ``` --- ## Métodos ### `AddReferences(SignedXml, DigestAlgorithm, XmlPolicySpec)` ```csharp protected override void AddReferences(SignedXml signedXml, DigestAlgorithm digestAlgorithm, XmlPolicySpec policy) ``` **Parâmetros** | Nome | Tipo | Descrição | |---|---|---| | `signedXml` | [`SignedXml`](https://learn.microsoft.com/dotnet/api/system.security.cryptography.xml.signedxml) | | | `digestAlgorithm` | [`DigestAlgorithm`](https://docs.lacunasoftware.com/api/Lacuna.Pki/DigestAlgorithm) | | | `policy` | [`XmlPolicySpec`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlPolicySpec) | | --- ### `GetToSignEntityTransferData()` ```csharp protected override byte[] GetToSignEntityTransferData() ``` **Retorno** [`byte[]`](https://learn.microsoft.com/dotnet/api/system.byte) --- ### `InsertSignatureElement(XmlElement, string, XmlInsertionOptions)` ```csharp protected override void InsertSignatureElement(XmlElement signatureElement, string xpath, XmlInsertionOptions insertionOption) ``` **Parâmetros** | Nome | Tipo | Descrição | |---|---|---| | `signatureElement` | [`XmlElement`](https://learn.microsoft.com/dotnet/api/system.xml.xmlelement) | | | `xpath` | [`string`](https://learn.microsoft.com/dotnet/api/system.string) | | | `insertionOption` | [`XmlInsertionOptions`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlInsertionOptions) | | --- ### `SetIdResolutionTable(XmlIdResolutionTable)` Sets a table to handle the attribute ID name to be used as ID locally or globally in the XML ```csharp public void SetIdResolutionTable(XmlIdResolutionTable idResolutionTable) ``` **Parâmetros** | Nome | Tipo | Descrição | |---|---|---| | `idResolutionTable` | [`XmlIdResolutionTable`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlIdResolutionTable) | | --- ### `SetToSignElementId(string)` Sets the element ID, in the passed XML document, which is going to be signed. If the specific ID attribute value is not known, an XPath can be passed instead: See method SetToSignElementXPath ```csharp public void SetToSignElementId(string elementId) ``` **Parâmetros** | Nome | Tipo | Descrição | |---|---|---| | `elementId` | [`string`](https://learn.microsoft.com/dotnet/api/system.string) | The ID attribute of the element to be signed | --- ### `SetToSignElementXPath(string, NamespaceManager)` Sets an XPath for selecting the element, with ID attribute, in the passed XML document, which is going to be signed ```csharp public void SetToSignElementXPath(string xpath, NamespaceManager namespaceMan) ``` **Parâmetros** | Nome | Tipo | Descrição | |---|---|---| | `xpath` | [`string`](https://learn.microsoft.com/dotnet/api/system.string) | The XPath for selecting to sign element with ID | | `namespaceMan` | [`NamespaceManager`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/NamespaceManager) | Namespaces and prefixed on XPath string, if needed | --- ### `SetToSignEntityTransferData(byte[])` ```csharp protected override void SetToSignEntityTransferData(byte[] transferData) ``` **Parâmetros** | Nome | Tipo | Descrição | |---|---|---| | `transferData` | [`byte[]`](https://learn.microsoft.com/dotnet/api/system.byte) | | --- ### `VerifyParameters(bool)` ```csharp protected override void VerifyParameters(bool computeSignature) ``` **Parâmetros** | Nome | Tipo | Descrição | |---|---|---| | `computeSignature` | [`bool`](https://learn.microsoft.com/dotnet/api/system.boolean) | | --- ## Membros herdados [`xmlDocument`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#xmldocument), [`namespaceMan`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#namespaceman), [`SetXml(byte[])`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setxml-system-byte), [`SetXml(XmlDocument)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setxml-system-xml-xmldocument), [`SetPolicy(XmlPolicySpec)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setpolicy-lacuna-pki-xml-xmlpolicyspec), [`SetPolicy(IXmlPolicyMapper)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setpolicy-lacuna-pki-xml-ixmlpolicymapper), [`SetSigningCertificate(PKCertificateWithKey)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setsigningcertificate-lacuna-pki-pkcertificatewithkey), [`SetSigningCertificate(PKCertificate)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setsigningcertificate-lacuna-pki-pkcertificate), [`SetSignatureElementLocation(string, NamespaceManager, XmlInsertionOptions)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setsignatureelementlocation-system-string-lacuna-pki-xml-namespacemanager-lacuna-pki-xml-xmlinsertionoptions), [`SetSignatureElementId(string)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setsignatureelementid-system-string), [`SetCommitmentType(CommitmentType)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setcommitmenttype-lacuna-pki-commitmenttype), [`SetDataObjectFormat(string)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setdataobjectformat-system-string), [`SetTimestampRequester(ITimestampRequester)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#settimestamprequester-lacuna-pki-itimestamprequester), [`SetClassicEnvelopedTransformation(bool)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setclassicenvelopedtransformation-system-boolean), [`SetCertificateValidationConfigurator(Action)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setcertificatevalidationconfigurator-system-action-lacuna-pki-certificatevalidationoptions), [`GenerateToSignHash(out SignatureAlgorithm, out byte[])`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#generatetosignhash-lacuna-pki-signaturealgorithm-system-byte), [`SetPrecomputedSignature(byte[], byte[])`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#setprecomputedsignature-system-byte-system-byte), [`ComputeSignature()`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#computesignature), [`VerifySignerParameters(bool)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#verifysignerparameters-system-boolean), [`GetSignatureElement()`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#getsignatureelement), [`GetSignedXml()`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#getsignedxml), [`InsertSignatureElement()`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#insertsignatureelement), [`FulfillTransformations(Reference)`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#fulfilltransformations-system-security-cryptography-xml-reference), [`Warnings`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#warnings), [`ValidationResults`](https://docs.lacunasoftware.com/api/Lacuna.Pki.Xml/XmlSigner#validationresults), [`ToString()`](https://learn.microsoft.com/dotnet/api/system.object.tostring), [`Equals(object)`](), [`Equals(object, object)`](), [`ReferenceEquals(object, object)`](https://learn.microsoft.com/dotnet/api/system.object.referenceequals), [`GetHashCode()`](https://learn.microsoft.com/dotnet/api/system.object.gethashcode), [`GetType()`](https://learn.microsoft.com/dotnet/api/system.object.gettype), [`MemberwiseClone()`](https://learn.microsoft.com/dotnet/api/system.object.memberwiseclone)