## templates templates — XML signature and encryption template functions. |

## Stability Level

Stable, unless otherwise indicated

## Functions

xmlNodePtr | xmlSecTmplSignatureCreate ()
xmlNodePtr | xmlSecTmplSignatureCreateNsPref ()
xmlNodePtr | xmlSecTmplSignatureEnsureKeyInfo ()
xmlNodePtr | xmlSecTmplSignatureAddReference ()
xmlNodePtr | xmlSecTmplSignatureAddObject ()
xmlNodePtr | xmlSecTmplSignatureGetSignMethodNode ()
xmlNodePtr | xmlSecTmplSignatureGetC14NMethodNode ()
xmlNodePtr | xmlSecTmplReferenceAddTransform ()
xmlNodePtr | xmlSecTmplObjectAddSignProperties ()
xmlNodePtr | xmlSecTmplObjectAddManifest ()
xmlNodePtr | xmlSecTmplManifestAddReference ()
xmlNodePtr | xmlSecTmplEncDataCreate ()
xmlNodePtr | xmlSecTmplEncDataEnsureKeyInfo ()
xmlNodePtr | xmlSecTmplEncDataEnsureEncProperties ()
xmlNodePtr | xmlSecTmplEncDataAddEncProperty ()
xmlNodePtr | xmlSecTmplEncDataEnsureCipherValue ()
xmlNodePtr | xmlSecTmplEncDataEnsureCipherReference ()
xmlNodePtr | xmlSecTmplEncDataGetEncMethodNode ()
xmlNodePtr | xmlSecTmplCipherReferenceAddTransform ()
xmlNodePtr | xmlSecTmplReferenceListAddDataReference ()
xmlNodePtr | xmlSecTmplReferenceListAddKeyReference ()
xmlNodePtr | xmlSecTmplKeyInfoAddKeyName ()
xmlNodePtr | xmlSecTmplKeyInfoAddKeyValue ()
xmlNodePtr | xmlSecTmplKeyInfoAddX509Data ()
xmlNodePtr | xmlSecTmplKeyInfoAddRetrievalMethod ()
xmlNodePtr | xmlSecTmplRetrievalMethodAddTransform ()
xmlNodePtr | xmlSecTmplKeyInfoAddEncryptedKey ()
xmlNodePtr | xmlSecTmplX509DataAddIssuerSerial ()
xmlNodePtr | xmlSecTmplX509IssuerSerialAddIssuerName ()
xmlNodePtr | xmlSecTmplX509IssuerSerialAddSerialNumber ()
xmlNodePtr | xmlSecTmplX509DataAddSubjectName ()
xmlNodePtr | xmlSecTmplX509DataAddSKI ()
xmlNodePtr | xmlSecTmplX509DataAddCertificate ()
xmlNodePtr | xmlSecTmplX509DataAddCRL ()
int | xmlSecTmplTransformAddHmacOutputLength ()
int | xmlSecTmplTransformAddRsaOaepParam ()
int | xmlSecTmplTransformAddXsltStylesheet ()
int | xmlSecTmplTransformAddC14NInclNamespaces ()
int | xmlSecTmplTransformAddXPath ()
int | xmlSecTmplTransformAddXPath2 ()
int | xmlSecTmplTransformAddXPointer ()

## Description

## Functions

### xmlSecTmplSignatureCreate ()

    xmlNodePtr
    xmlSecTmplSignatureCreate (xmlDocPtr doc,
                               xmlSecTransformId c14nMethodId,
                               xmlSecTransformId signMethodId,
                               const xmlChar *id);

Creates new <dsig:Signature/> node with the mandatory <dsig:SignedInfo/>,

<dsig:CanonicalizationMethod/>, <dsig:SignatureMethod/> and <dsig:SignatureValue/> children and sub-children. The application is responsible for inserting the returned node in the XML document.

#### Parameters

doc | the pointer to signature document or NULL; in the second case, application must later call `xmlSetTreeDoc` to ensure that all the children nodes have correct pointer to XML document. |
c14nMethodId | the signature canonicalization method. |
signMethodId | the signature method. |
id | the node id (may be NULL). |

#### Returns

the pointer to newly created <dsig:Signature/> node or NULL if an error occurs.

### xmlSecTmplSignatureCreateNsPref ()

    xmlNodePtr
    xmlSecTmplSignatureCreateNsPref (xmlDocPtr doc,
                                     xmlSecTransformId c14nMethodId,
                                     xmlSecTransformId signMethodId,
                                     const xmlChar *id,
                                     const xmlChar *nsPrefix);

Creates new <dsig:Signature/> node with the mandatory

<dsig:SignedInfo/>, <dsig:CanonicalizationMethod/>, <dsig:SignatureMethod/> and <dsig:SignatureValue/> children and sub-children. This method differs from xmlSecTmplSignatureCreate in that it will define the http://www.w3.org/2000/09/xmldsig# namespace with the given prefix that will be used for all of the appropriate child nodes. The application is responsible for inserting the returned node in the XML document.

#### Parameters

doc | the pointer to signature document or NULL; in the second case, application must later call `xmlSetTreeDoc` to ensure that all the children nodes have correct pointer to XML document. |
c14nMethodId | the signature canonicalization method. |
signMethodId | the signature method. |
id | the node id (may be NULL). |
nsPrefix | the namespace prefix for the signature element (e.g. "dsig"), or NULL |

#### Returns

the pointer to newly created <dsig:Signature/> node or NULL if an error occurs.

### xmlSecTmplSignatureEnsureKeyInfo ()

    xmlNodePtr
    xmlSecTmplSignatureEnsureKeyInfo (xmlNodePtr signNode,
                                      const xmlChar *id);

Adds (if necessary) <dsig:KeyInfo/> node to the <dsig:Signature/> node `signNode` .

#### Parameters

signNode | the pointer to <dsig:Signature/> node. |
id | the node id (may be NULL). |

#### Returns

the pointer to newly created <dsig:KeyInfo/> node or NULL if an error occurs.

### xmlSecTmplSignatureAddReference ()

    xmlNodePtr
    xmlSecTmplSignatureAddReference (xmlNodePtr signNode,
                                     xmlSecTransformId digestMethodId,
                                     const xmlChar *id,
                                     const xmlChar *uri,
                                     const xmlChar *type);

Adds <dsig:Reference/> node with given URI (`uri` ), Id (`id` ) and Type (`type` ) attributes and the required children <dsig:DigestMethod/> and

<dsig:DigestValue/> to the <dsig:SignedInfo/> child of `signNode`.

#### Parameters

signNode | the pointer to <dsig:Signature/> node. |
digestMethodId | the reference digest method. |
id | the node id (may be NULL). |
uri | the reference node uri (may be NULL). |
type | the reference node type (may be NULL). |

#### Returns

the pointer to newly created <dsig:Reference/> node or NULL if an error occurs.

### xmlSecTmplSignatureAddObject ()

    xmlNodePtr
    xmlSecTmplSignatureAddObject (xmlNodePtr signNode,
                                  const xmlChar *id,
                                  const xmlChar *mimeType,
                                  const xmlChar *encoding);

Adds <dsig:Object/> node to the <dsig:Signature/> node `signNode` .

#### Parameters

signNode | the pointer to <dsig:Signature/> node. |
id | the node id (may be NULL). |
mimeType | the object mime type (may be NULL). |
encoding | the object encoding (may be NULL). |

#### Returns

the pointer to newly created <dsig:Object/> node or NULL if an error occurs.

### xmlSecTmplSignatureGetSignMethodNode ()

    xmlNodePtr
    xmlSecTmplSignatureGetSignMethodNode (xmlNodePtr signNode);

Gets pointer to <dsig:SignatureMethod/> child of <dsig:KeyInfo/> node.

#### Parameters

signNode | the pointer to <dsig:Signature /> node. |

#### Returns

pointer to <dsig:SignatureMethod /> node or NULL if an error occurs.

### xmlSecTmplSignatureGetC14NMethodNode ()

    xmlNodePtr
    xmlSecTmplSignatureGetC14NMethodNode (xmlNodePtr signNode);

Gets pointer to <dsig:CanonicalizationMethod/> child of <dsig:KeyInfo/> node.

#### Parameters

signNode | the pointer to <dsig:Signature /> node. |

#### Returns

pointer to <dsig:CanonicalizationMethod /> node or NULL if an error occurs.

### xmlSecTmplReferenceAddTransform ()

    xmlNodePtr
    xmlSecTmplReferenceAddTransform (xmlNodePtr referenceNode,
                                     xmlSecTransformId transformId);

Adds <dsig:Transform/> node to the <dsig:Reference/> node `referenceNode` .

#### Parameters

referenceNode | the pointer to <dsig:Reference/> node. |
transformId | the transform method id. |

#### Returns

the pointer to newly created <dsig:Transform/> node or NULL if an error occurs.

### xmlSecTmplObjectAddSignProperties ()

    xmlNodePtr
    xmlSecTmplObjectAddSignProperties (xmlNodePtr objectNode,
                                       const xmlChar *id,
                                       const xmlChar *target);

Adds <dsig:SignatureProperties/> node to the <dsig:Object/> node `objectNode` .

#### Parameters

objectNode | the pointer to <dsig:Object/> node. |
id | the node id (may be NULL). |
target | the Target (may be NULL). |

#### Returns

the pointer to newly created <dsig:SignatureProperties/> node or NULL if an error occurs.

### xmlSecTmplObjectAddManifest ()

    xmlNodePtr
    xmlSecTmplObjectAddManifest (xmlNodePtr objectNode,
                                 const xmlChar *id);

Adds <dsig:Manifest/> node to the <dsig:Object/> node `objectNode` .

#### Parameters

objectNode | the pointer to <dsig:Object/> node. |
id | the node id (may be NULL). |

#### Returns

the pointer to newly created <dsig:Manifest/> node or NULL if an error occurs.

### xmlSecTmplManifestAddReference ()

    xmlNodePtr
    xmlSecTmplManifestAddReference (xmlNodePtr manifestNode,
                                    xmlSecTransformId digestMethodId,
                                    const xmlChar *id,
                                    const xmlChar *uri,
                                    const xmlChar *type);

Adds <dsig:Reference/> node with specified URI (`uri` ), Id (`id` ) and Type (`type` ) attributes and the required children <dsig:DigestMethod/> and

<dsig:DigestValue/> to the <dsig:Manifest/> node `manifestNode`.

#### Parameters

manifestNode | the pointer to <dsig:Manifest/> node. |
digestMethodId | the reference digest method. |
id | the node id (may be NULL). |
uri | the reference node uri (may be NULL). |
type | the reference node type (may be NULL). |

#### Returns

the pointer to newly created <dsig:Reference/> node or NULL if an error occurs.

### xmlSecTmplEncDataCreate ()

    xmlNodePtr
    xmlSecTmplEncDataCreate (xmlDocPtr doc,
                             xmlSecTransformId encMethodId,
                             const xmlChar *id,
                             const xmlChar *type,
                             const xmlChar *mimeType,
                             const xmlChar *encoding);

Creates new <enc:EncryptedData /> node for encryption template.

#### Parameters

doc | the pointer to signature document or NULL; in the later case, application must later call `xmlSetTreeDoc` to ensure that all the children nodes have correct pointer to XML document. |
encMethodId | the encryption method (may be NULL). |
id | the Id attribute (optional). |
type | the Type attribute (optional) |
mimeType | the MimeType attribute (optional) |
encoding | the Encoding attribute (optional) |

#### Returns

the pointer newly created <enc:EncryptedData/> node or NULL if an error occurs.

### xmlSecTmplEncDataEnsureKeyInfo ()

    xmlNodePtr
    xmlSecTmplEncDataEnsureKeyInfo (xmlNodePtr encNode,
                                    const xmlChar *id);

Adds <dsig:KeyInfo/> to the <enc:EncryptedData/> node `encNode` .

#### Parameters

encNode | the pointer to <enc:EncryptedData/> node. |
id | the Id attrbibute (optional). |

#### Returns

the pointer to newly created <dsig:KeyInfo/> node or NULL if an error occurs.

### xmlSecTmplEncDataEnsureEncProperties ()

    xmlNodePtr
    xmlSecTmplEncDataEnsureEncProperties (xmlNodePtr encNode,
                                          const xmlChar *id);

Adds <enc:EncryptionProperties/> node to the <enc:EncryptedData/> node `encNode` .

#### Parameters

encNode | the pointer to <enc:EncryptedData/> node. |
id | the Id attribute (optional). |

#### Returns

the pointer to newly created <enc:EncryptionProperties/> node or NULL if an error occurs.

### xmlSecTmplEncDataAddEncProperty ()

    xmlNodePtr
    xmlSecTmplEncDataAddEncProperty (xmlNodePtr encNode,
                                     const xmlChar *id,
                                     const xmlChar *target);

Adds <enc:EncryptionProperty/> node (and the parent

<enc:EncryptionProperties/> node if required) to the <enc:EncryptedData/> node `encNode`.

#### Parameters

encNode | the pointer to <enc:EncryptedData/> node. |
id | the Id attribute (optional). |
target | the Target attribute (optional). |

#### Returns

the pointer to newly created <enc:EncryptionProperty/> node or NULL if an error occurs.

### xmlSecTmplEncDataEnsureCipherValue ()

    xmlNodePtr
    xmlSecTmplEncDataEnsureCipherValue (xmlNodePtr encNode);

Adds <enc:CipherValue/> to the <enc:EncryptedData/> node `encNode` .

#### Parameters

encNode | the pointer to <enc:EncryptedData/> node. |

#### Returns

the pointer to newly created <enc:CipherValue/> node or NULL if an error occurs.

### xmlSecTmplEncDataEnsureCipherReference ()

    xmlNodePtr
    xmlSecTmplEncDataEnsureCipherReference
                                   (xmlNodePtr encNode,
                                    const xmlChar *uri);

Adds <enc:CipherReference/> node with specified URI attribute `uri` to the <enc:EncryptedData/> node `encNode` .

#### Parameters

encNode | the pointer to <enc:EncryptedData/> node. |
uri | the URI attribute (may be NULL). |

#### Returns

the pointer to newly created <enc:CipherReference/> node or NULL if an error occurs.

### xmlSecTmplEncDataGetEncMethodNode ()

    xmlNodePtr
    xmlSecTmplEncDataGetEncMethodNode (xmlNodePtr encNode);

Gets pointer to <enc:EncryptionMethod/> node.

#### Parameters

encNode | the pointer to <enc:EcnryptedData /> node. |

#### Returns

pointer to <enc:EncryptionMethod /> node or NULL if an error occurs.

### xmlSecTmplCipherReferenceAddTransform ()

    xmlNodePtr
    xmlSecTmplCipherReferenceAddTransform (xmlNodePtr cipherReferenceNode,
                                           xmlSecTransformId transformId);

Adds <dsig:Transform/> node (and the parent <dsig:Transforms/> node) with specified transform methods `transform` to the <enc:CipherReference/> child node of the <enc:EncryptedData/> node `encNode` .

#### Parameters

cipherReferenceNode | the pointer to <enc:CipherReference/> node. |
transformId | the transform id. |

#### Returns

the pointer to newly created <dsig:Transform/> node or NULL if an error occurs.

### xmlSecTmplReferenceListAddDataReference ()

    xmlNodePtr
    xmlSecTmplReferenceListAddDataReference
                                   (xmlNodePtr encNode,
                                    const xmlChar *uri);

Adds <enc:DataReference/> and the parent <enc:ReferenceList/> node (if needed).

#### Parameters

encNode | the pointer to <enc:EncryptedKey/> node. |
uri | uri to reference (optional) |

#### Returns

the pointer to newly created <enc:DataReference/> node or NULL if an error occurs.

### xmlSecTmplReferenceListAddKeyReference ()

    xmlNodePtr
    xmlSecTmplReferenceListAddKeyReference
                                   (xmlNodePtr encNode,
                                    const xmlChar *uri);

Adds <enc:KeyReference/> and the parent <enc:ReferenceList/> node (if needed).

#### Parameters

encNode | the pointer to <enc:EncryptedKey/> node. |
uri | uri to reference (optional) |

#### Returns

the pointer to newly created <enc:KeyReference/> node or NULL if an error occurs.

### xmlSecTmplKeyInfoAddKeyName ()

    xmlNodePtr
    xmlSecTmplKeyInfoAddKeyName (xmlNodePtr keyInfoNode,
                                 const xmlChar *name);

Adds <dsig:KeyName/> node to the <dsig:KeyInfo/> node `keyInfoNode` .

#### Parameters

keyInfoNode | the pointer to <dsig:KeyInfo/> node. |
name | the key name (optional). |

#### Returns

the pointer to the newly created <dsig:KeyName/> node or NULL if an error occurs.

### xmlSecTmplKeyInfoAddKeyValue ()

    xmlNodePtr
    xmlSecTmplKeyInfoAddKeyValue (xmlNodePtr keyInfoNode);

Adds <dsig:KeyValue/> node to the <dsig:KeyInfo/> node `keyInfoNode` .

#### Parameters

keyInfoNode | the pointer to <dsig:KeyInfo/> node. |

#### Returns

the pointer to the newly created <dsig:KeyValue/> node or NULL if an error occurs.

### xmlSecTmplKeyInfoAddX509Data ()

    xmlNodePtr
    xmlSecTmplKeyInfoAddX509Data (xmlNodePtr keyInfoNode);

Adds <dsig:X509Data/> node to the <dsig:KeyInfo/> node `keyInfoNode` .

#### Parameters

keyInfoNode | the pointer to <dsig:KeyInfo/> node. |

#### Returns

the pointer to the newly created <dsig:X509Data/> node or NULL if an error occurs.

### xmlSecTmplKeyInfoAddRetrievalMethod ()

    xmlNodePtr
    xmlSecTmplKeyInfoAddRetrievalMethod (xmlNodePtr keyInfoNode,
                                         const xmlChar *uri,
                                         const xmlChar *type);

Adds <dsig:RetrievalMethod/> node to the <dsig:KeyInfo/> node `keyInfoNode` .

#### Parameters

keyInfoNode | the pointer to <dsig:KeyInfo/> node. |
uri | the URI attribute (optional). |
type | the Type attribute(optional). |

#### Returns

the pointer to the newly created <dsig:RetrievalMethod/> node or NULL if an error occurs.

### xmlSecTmplRetrievalMethodAddTransform ()

    xmlNodePtr
    xmlSecTmplRetrievalMethodAddTransform (xmlNodePtr retrMethodNode,
                                           xmlSecTransformId transformId);

Adds <dsig:Transform/> node (and the parent <dsig:Transforms/> node if required) to the <dsig:RetrievalMethod/> node `retrMethod` .

#### Parameters

retrMethodNode | the pointer to <dsig:RetrievalMethod/> node. |
transformId | the transform id. |

#### Returns

the pointer to the newly created <dsig:Transforms/> node or NULL if an error occurs.

### xmlSecTmplKeyInfoAddEncryptedKey ()

    xmlNodePtr
    xmlSecTmplKeyInfoAddEncryptedKey (xmlNodePtr keyInfoNode,
                                      xmlSecTransformId encMethodId,
                                      const xmlChar *id,
                                      const xmlChar *type,
                                      const xmlChar *recipient);

Adds <enc:EncryptedKey/> node with given attributes to the <dsig:KeyInfo/> node `keyInfoNode` .

#### Parameters

keyInfoNode | the pointer to <dsig:KeyInfo/> node. |
encMethodId | the encryption method (optional). |
id | the Id attribute (optional). |
type | the Type attribute (optional). |
recipient | the Recipient attribute (optional). |

#### Returns

the pointer to the newly created <enc:EncryptedKey/> node or NULL if an error occurs.

### xmlSecTmplX509DataAddIssuerSerial ()

    xmlNodePtr
    xmlSecTmplX509DataAddIssuerSerial (xmlNodePtr x509DataNode);

Adds <dsig:X509IssuerSerial/> node to the given <dsig:X509Data/> node.

#### Parameters

x509DataNode | the pointer to <dsig:X509Data/> node. |

#### Returns

the pointer to the newly created <dsig:X509IssuerSerial/> node or NULL if an error occurs.

### xmlSecTmplX509IssuerSerialAddIssuerName ()

    xmlNodePtr
    xmlSecTmplX509IssuerSerialAddIssuerName
                                   (xmlNodePtr x509IssuerSerialNode,
                                    const xmlChar *issuerName);

Adds <dsig:X509IssuerName/> node to the <dsig:X509IssuerSerial/> node `x509IssuerSerialNode` .

#### Parameters

x509IssuerSerialNode | the pointer to <dsig:X509IssuerSerial/> node. |
issuerName | the issuer name (optional). |

#### Returns

the pointer to the newly created <dsig:X509IssuerName/> node or NULL if an error occurs.

### xmlSecTmplX509IssuerSerialAddSerialNumber ()

    xmlNodePtr
    xmlSecTmplX509IssuerSerialAddSerialNumber
                                   (xmlNodePtr x509IssuerSerialNode,
                                    const xmlChar *serial);

Adds <dsig:X509SerialNumber/> node to the <dsig:X509IssuerSerial/> node `x509IssuerSerialNode` .

#### Parameters

x509IssuerSerialNode | the pointer to <dsig:X509IssuerSerial/> node. |
serial | the serial number (optional). |

#### Returns

the pointer to the newly created <dsig:X509SerialNumber/> node or NULL if an error occurs.

### xmlSecTmplX509DataAddSubjectName ()

    xmlNodePtr
    xmlSecTmplX509DataAddSubjectName (xmlNodePtr x509DataNode);

Adds <dsig:X509SubjectName/> node to the given <dsig:X509Data/> node.

#### Parameters

x509DataNode | the pointer to <dsig:X509Data/> node. |

#### Returns

the pointer to the newly created <dsig:X509SubjectName/> node or NULL if an error occurs.

### xmlSecTmplX509DataAddSKI ()

    xmlNodePtr
    xmlSecTmplX509DataAddSKI (xmlNodePtr x509DataNode);

Adds <dsig:X509SKI/> node to the given <dsig:X509Data/> node.

#### Parameters

x509DataNode | the pointer to <dsig:X509Data/> node. |

#### Returns

the pointer to the newly created <dsig:X509SKI/> node or NULL if an error occurs.

### xmlSecTmplX509DataAddCertificate ()

    xmlNodePtr
    xmlSecTmplX509DataAddCertificate (xmlNodePtr x509DataNode);

Adds <dsig:X509Certificate/> node to the given <dsig:X509Data/> node.

#### Parameters

x509DataNode | the pointer to <dsig:X509Data/> node. |

#### Returns

the pointer to the newly created <dsig:X509Certificate/> node or NULL if an error occurs.

### xmlSecTmplX509DataAddCRL ()

    xmlNodePtr
    xmlSecTmplX509DataAddCRL (xmlNodePtr x509DataNode);

Adds <dsig:X509CRL/> node to the given <dsig:X509Data/> node.

#### Parameters

x509DataNode | the pointer to <dsig:X509Data/> node. |

#### Returns

the pointer to the newly created <dsig:X509CRL/> node or NULL if an error occurs.

### xmlSecTmplTransformAddHmacOutputLength ()

    int
    xmlSecTmplTransformAddHmacOutputLength
                                   (xmlNodePtr transformNode,
                                    xmlSecSize bitsLen);

Creates <dsig:HMACOutputLength/> child for the HMAC transform node `node` .

#### Parameters

transformNode | the pointer to <dsig:Transform/> node |
bitsLen | the required length in bits |

#### Returns

0 on success and a negative value otherwise.

### xmlSecTmplTransformAddRsaOaepParam ()

    int
    xmlSecTmplTransformAddRsaOaepParam (xmlNodePtr transformNode,
                                        const xmlSecByte *buf,
                                        xmlSecSize size);

Creates <enc:OAEPParam/> child node in the `node` .

#### Parameters

transformNode | the pointer to <dsig:Transform/> node. |
buf | the OAEP param buffer. |
size | the OAEP param buffer size. |

#### Returns

0 on success or a negative value if an error occurs.

### xmlSecTmplTransformAddXsltStylesheet ()

    int
    xmlSecTmplTransformAddXsltStylesheet (xmlNodePtr transformNode,
                                          const xmlChar *xslt);

Writes the XSLT transform expression to the `node` .

#### Parameters

transformNode | the pointer to <dsig:Transform/> node. |
xslt | the XSLT transform expression. |

#### Returns

0 on success or a negative value otherwise.

### xmlSecTmplTransformAddC14NInclNamespaces ()

    int
    xmlSecTmplTransformAddC14NInclNamespaces
                                   (xmlNodePtr transformNode,
                                    const xmlChar *prefixList);

Adds "inclusive" namespaces to the ExcC14N transform node `node` .

#### Parameters

transformNode | the pointer to <dsig:Transform/> node. |
prefixList | the white space delimited list of namespace prefixes, where "default" indicates the default namespace (optional). |

#### Returns

0 if success or a negative value otherwise.

### xmlSecTmplTransformAddXPath ()

    int
    xmlSecTmplTransformAddXPath (xmlNodePtr transformNode,
                                 const xmlChar *expression,
                                 const xmlChar **nsList);

Writes XPath transform information to the <dsig:Transform/> node `node` .

#### Parameters

transformNode | the pointer to the <dsig:Transform/> node. |
expression | the XPath expression. |
nsList | the NULL terminated list of namespace prefix/href pairs (optional). |

#### Returns

0 for success or a negative value otherwise.

### xmlSecTmplTransformAddXPath2 ()

    int
    xmlSecTmplTransformAddXPath2 (xmlNodePtr transformNode,
                                  const xmlChar *type,
                                  const xmlChar *expression,
                                  const xmlChar **nsList);

Writes XPath2 transform information to the <dsig:Transform/> node `node` .

#### Parameters

transformNode | the pointer to the <dsig:Transform/> node. |
type | the XPath2 transform type ("union", "intersect" or "subtract"). |
expression | the XPath expression. |
nsList | the NULL terminated list of namespace prefix/href pairs. (optional). |

#### Returns

0 for success or a negative value otherwise.

### xmlSecTmplTransformAddXPointer ()

    int
    xmlSecTmplTransformAddXPointer (xmlNodePtr transformNode,
                                    const xmlChar *expression,
                                    const xmlChar **nsList);

Writes XPointer transform information to the <dsig:Transform/> node `node` .

#### Parameters

transformNode | the pointer to the <dsig:Transform/> node. |
expression | the XPath expression. |
nsList | the NULL terminated list of namespace prefix/href pairs. (optional). |

#### Returns

0 for success or a negative value otherwise.