# Package javax.xml.crypto.dsig

Classes for generating and validating XML digital signatures.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  CanonicalizationMethod | A representation of the XML `CanonicalizationMethod` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  DigestMethod | A representation of the XML `DigestMethod` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  Manifest | A representation of the XML `Manifest` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  Reference | A representation of the `Reference` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  SignatureMethod | A representation of the XML `SignatureMethod` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  SignatureProperties | A representation of the XML `SignatureProperties` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  SignatureProperty | A representation of the XML `SignatureProperty` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  SignedInfo | An representation of the XML `SignedInfo` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  Transform | A representation of the XML `Transform` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  XMLObject | A representation of the XML `Object` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  XMLSignature | A representation of the XML `Signature` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  XMLSignature.SignatureValue | A representation of the XML `SignatureValue` element as defined in the W3C Recommendation for XML-Signature Syntax and Processing.
  XMLSignContext | Contains context information for generating XML Signatures.
  XMLValidateContext | Contains context information for validating XML Signatures.

- Class Summary
  Class | Description
  --- | ---
  TransformService | A Service Provider Interface for transform and canonicalization algorithms.
  XMLSignatureFactory | A factory for creating `XMLSignature` objects from scratch or for unmarshalling an `XMLSignature` object from a corresponding XML representation.

- Exception Summary
  Exception | Description
  --- | ---
  TransformException | Indicates an exceptional condition that occurred while executing a transform algorithm.
  XMLSignatureException | Indicates an exceptional condition that occurred during the XML signature generation or validation process.

## Package javax.xml.crypto.dsig Description

Classes for generating and validating XML digital signatures. This package includes classes that represent the core elements defined in the W3C XML digital signature specification: `XMLSignature`, `SignedInfo`, `CanonicalizationMethod`, `SignatureMethod`, `Reference`, `DigestMethod`, `XMLObject`, `Manifest`, `SignatureProperties`, and `SignatureProperty`. `KeyInfo` types are defined in the `javax.xml.crypto.dsig.keyinfo` subpackage. `XMLSignatureFactory` is an abstract factory that creates `XMLSignature` objects from scratch or from a pre-existing XML representation, such as a DOM node. `TransformService` is a service provider interface for creating and plugging in implementations of transform and canonicalization algorithms.

Of primary significance in this package is the `XMLSignature` class, which allows you to sign and validate an XML digital signature.

## Package Specification

- XML-Signature Syntax and Processing: W3C Recommendation
- RFC 3275: XML-Signature Syntax and Processing

Since:
  1.6

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