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A Java library for XAdES signature services

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XAdES4j is a high-level, configurable and extensible Java implementation of XML Advanced Electronic Signatures (XAdES 1.3.2 and 1.4.1). It enables producing, verifying and extending signatures in the main XAdES forms: XAdES-BES, XAdES-EPES, XAdES-T and XAdES-C. Also, extended forms are supported through the enrichment of an existing signature.

The API provides a high level of abstraction, handling all the structural details of XAdES. The library relies on Apache XML Security for the core XML-DSIG processing and uses Guice to assemble the different configurable components.

Package

The library is available on Maven.

<dependency>
  <groupId>com.googlecode.xades4j</groupId>
  <artifactId>xades4j</artifactId>
  <version>{version}</version>
</dependency>

Example

Document doc = /* parse XML document */;
// Define the signing key/certificate
KeyingDataProvider kp = FileSystemKeyStoreKeyingDataProvider
        .builder(/* key store location and type */)
        .build();
// Define the signed object
DataObjectDesc obj = new DataObjectReference("")
        .withTransform(new EnvelopedSignatureTransform())
        .withDataObjectFormat(new DataObjectFormatProperty("text/xml"));
// Create the signature
XadesSigner signer = new XadesBesSigningProfile(kp).newSigner();
signer.sign(new SignedDataObjects(obj), doc.getDocumentElement());

Docs and Q&A

  • General usage documentation can be found on the project's wiki.
  • Javadocs for the latest version can be found here.
  • Unit tests in the source code illustrate all the features.
  • Overview of the architecture and implementation on the XAdES4j Prezi.
  • xades4j tag on Stack Overflow.

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A Java library for XAdES signature services

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