Abstract: The present invention provides a method, system, and computer program product which enables changing user credentials that are used to access legacy host applications and/or systems which provide legacy host data during a secure host access session which is authenticated using a digital certificate and is protected by a host-based security system, such as RACF (Resource Access Control Facility, a product offered by the IBM Corporation), where these changed credentials are used to authenticate a user after previously-provided credentials have been used for authentication earlier in the same session. The changed credentials may belong to the same user, where that user happens to have a different user ID and/or password for different legacy host applications and wishes to change from accessing one legacy host application to accessing another. Or, the changed credentials may be used to enable a different user to interact with the same legacy host application used by the previously-authenticated user.

Abstract: The present invention provides a method, system, and computer program product for enabling a user to provide a single system sign-on for accessing one or more legacy host applications and/or one or more systems which provide legacy host data (such as legacy database systems) during a secure host access session which is authenticated using a digital certificate and is protected by a host-based security system, such as RACF (Resource Access Control Facility, a product offered by the IBM Corporation), where the same set of credentials must be provided more than once during the secure session. The subsequent provision of the credentials may be transparent to the user, and does not require change to existing legacy applications or systems.

Abstract: Methods, systems, and computer program products for programmatically generating presentation style information for use when subsequently rendering a collection of legacy host data values. In preferred embodiments, the style information is a style sheet document, and the generation is based upon values stored in a prior art map that is defined for used when displaying the collection of legacy host data values. Improvements are therefore provided in the user interface techniques which allow users to interact with legacy host applications. The generated presentation style information may be treated as a default presentation style, and may be modified (for example, by a user) for a more customized presentation style. The programmatic generation may be performed in a tool created specifically for this purpose, or in logic which augments an existing tool (such as a style sheet editor).