SignedXml Methods for Handling XML...

The SignedXml object is a crucial feature in SuiteScript that facilitates the management of digitally signed XML content. By leveraging this object, developers can ensure the integrity and authenticity of XML data used in their applications. Below are the significant members of the SignedXml object and their functionalities.

What Are the Members of the SignedXml Object?

The SignedXml object includes several essential methods:

Member Name	Return Type	Supported Script Types	Description
`SignedXml.asFile()`	`file.File`	Server scripts	Returns the signed XML as a file object.
`SignedXml.asString()`	`string`	Server scripts	Returns the signed XML as a string.
`SignedXml.asXml()`	`xml.Document`	Server scripts	Returns the signed XML as an XML document. You can use the N/xml Module with this document to access elements and attributes in the XML.

How Does the SignedXml Object Work?

The SignedXml object is returned by the certificate.signXml(options) method, which encapsulates an XML string that has undergone digital signing. Below is a code snippet demonstrating how to utilize the SignedXml object after signing an XML string:

Example Usage of SignedXml

suitescript

1// Add additional code
2...
3// signedXml is a certificate.SignedXml object
4var signedXml = certificate.signXml({
5    algorithm: certificate.HashAlg.SHA256,
6    certId: 'custcertificate1',
7    rootTag: 'infNFe',
8    xmlString: infNFe.getContents()
9});
10 
11// You can use the certificate.SignedXml object to verify the signature
12certificate.verifyXMLSignature({
13    signedXml: signedXml,
14    rootTag: 'infNFe'
15});
16...
17// Add additional code

This code demonstrates how to sign XML and subsequently verify its signature using the SignedXml object.

Key Considerations

The SignedXml object is designed for Server scripts only, which limits its use to backend operations.
Ensure that the XML you are signing meets your application's security requirements, as this will prevent unauthorized modifications.
Utilize the N/xml Module effectively to traverse and manipulate the returned XML document via SignedXml.asXml().

Who This Affects

Developers: Those developing SuiteScript applications that require the signing and verification of XML data.
Security Administrators: Professionals tasked with ensuring data integrity and security in applications utilizing XML transport.

Key practices for developers and administrators include regular reviews of script permissions and ensuring adequate governance is applied to the use of cryptographic features within NetSuite.

Frequently Asked Questions (4)

What script types support the SignedXml object's methods?

The SignedXml object's methods, such as asFile(), asString(), and asXml(), are supported exclusively in server scripts.

How can I verify the signature of a signed XML document using the SignedXml object?

You can verify the signature of a signed XML document using the certificate.verifyXMLSignature() method, by passing in the SignedXml object and specifying the root tag.

What module should I use to access elements in an XML document returned by SignedXml.asXml()?

Use the N/xml Module to access and manipulate elements and attributes in the XML document returned by the SignedXml.asXml() method.

Are there any prerequisites for using the SignedXml object in SuiteScript?

Yes, the SignedXml object is limited to server scripts, meaning it is used in backend operations within SuiteScript. Additionally, your application should meet security requirements to prevent unauthorized modifications to the XML.

SignedXml Methods for Handling XML in SuiteScript