WS-Security is a specification that provides a communications protocol for applying security to web services. The security mechanisms implement the specification. Web Services Interoperability Technologies (WSIT) implements WS-Security so as to provide interoperable message content integrity and confidentiality, even when messages pass through intermediary nodes before reaching their destination endpoint. WS-Security as provided by WSIT is in addition to existing transport-level security, which can still be used. The Simple Object Access Protocol (SOAP) layer message security providers installed with Enterprise Server can be used to employ username/password and X.509 certificate security tokens to authenticate and encrypt SOAP web services messages.
Username Tokens. Enterprise Server uses username tokens in SOAP messages to authenticate the message sender. The recipient of a message containing a username token (within embedded password) validates that the message sender is authorized to act as the user (identified in the token) by confirming that the sender knows the password of the user.
When using a username token, a valid user database must be configured on Enterprise Server.
Digital Signatures. Enterprise Server uses XML digital signatures to bind an authentication identity to message content. Clients use digital signatures to establish their caller identity. Digital signatures are verified by the message receiver to authenticate the source of the message content (which might be different from the sender of the message.)
When using digital signatures, valid keystore and truststore files must be configured on Enterprise Server.
Encryption. The purpose of encryption is to modify the data so that it can only be understood by its intended audience. This is accomplished by substituting an encrypted element for the original content. When based on public key cryptography, encryption can be used to establish the identity of the parties who are authorized to read a message.
When using encryption, a Java Cryptography Extension (JCE) provider that supports encryption must be installed.