Packages
org.apache.xml.security.algorithms algorithm factories
org.apache.xml.security.algorithms.encryption algorithm base classes for EncryptionAlgorithms
org.apache.xml.security.algorithms.encryption.helper helper classes for encryption algorithms, e.g. classes to turn a 'normal' RSA into RSA-OAEP
org.apache.xml.security.algorithms.encryption.implementations.BC  
org.apache.xml.security.algorithms.encryption.params classes which are supplied as parameters for encryption algorithms
org.apache.xml.security.algorithms.implementations implementations of SignatureAlgorithmSpi
org.apache.xml.security.c14n Canonicalization related material and algorithms
org.apache.xml.security.c14n.helper helper classes for canonicalization
org.apache.xml.security.c14n.implementations canonicalization implementations
org.apache.xml.security.encryption classes which implement the XML Encryption spec.
org.apache.xml.security.encryption.type interfaces to model abstract schema types
org.apache.xml.security.exceptions general exceptions used by this library
org.apache.xml.security.keys general key related material
org.apache.xml.security.keys.content basic handlers for elements that can occur inside ds:KeyInfo
org.apache.xml.security.keys.content.keyvalues basic handlers for elements that can occur inside ds:KeyValue
org.apache.xml.security.keys.content.x509 basic handlers for elements that can occur inside ds:X509Data
org.apache.xml.security.keys.keyresolver the resolver framework for retrieval of certificates and public keys from elements
org.apache.xml.security.keys.keyresolver.implementations implementations for retrieval of certificates and public keys from elements
org.apache.xml.security.keys.provider  
org.apache.xml.security.keys.storage a resolver framework for certificates and public keys from user-specified locations
org.apache.xml.security.keys.storage.implementations implementations of resolvers for retrieval for certificates and public keys from user-specified locations
org.apache.xml.security.signature XML Signature specific classes
org.apache.xml.security.transforms the framework for XML Signature transforms
org.apache.xml.security.transforms.implementations implementations of XML Signature transforms
org.apache.xml.security.transforms.params  
org.apache.xml.security.utils general utility classes
org.apache.xml.security.utils.resolver the ResourceResolver classes used to resolve ds:Reference URIs
org.apache.xml.security.utils.resolver.implementations implememtations of different ResourceResolver classes used to resolve ds:Reference URIs