Supporto per la firma XAdES

Aspose.Cells fornisce il supporto per la firma delle cartelle di lavoro con la firma XAdES. Per questo, lo API fornisceFirma digitaleclasse eXAdESTTypeenumerazione.

Il seguente frammento di codice illustra l’uso diFirma digitaleclasse per firmare ilfontecartella di lavoro.

Codice d’esempio

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java
// directories
String sourceDir = Utils.Get_SourceDirectory();
String outputDir = Utils.Get_OutputDirectory();

Workbook workbook = new Workbook(sourceDir + "sourceFile.xlsx");
String password = "pfxPassword";
String pfx = "pfxFile";

// Load the certificate into an instance of InputStream
InputStream inStream = new FileInputStream(pfx);

// Create an instance of KeyStore with PKCS12 cryptography
java.security.KeyStore inputKeyStore = java.security.KeyStore.getInstance("PKCS12");

// Use the KeyStore.load method to load the certificate stream and its password
inputKeyStore.load(inStream, password.toCharArray());

DigitalSignature signature = new DigitalSignature(inputKeyStore, password, "testXAdES", com.aspose.cells.DateTime.getNow());

signature.setXAdESType(XAdESType.X_AD_ES);
DigitalSignatureCollection dsCollection = new DigitalSignatureCollection();
dsCollection.add(signature);

workbook.setDigitalSignature(dsCollection);

workbook.save(outputDir + "XAdESSignatureSupport_out.xlsx");