25. The computer program product of claim 19 wherein computer program instructions for translating the security information in a native format of a first security domain to a canonical format comprises a mapping, expressed in XSL, from the native format of the first security domain to a canonical format.
19. A computer program product for cross domain security information conversion, the computer program product embodied on a recordable computer-readable medium, the computer program product comprising computer program instructions which when installed and executed on a data processing system, are capable causing the data processing system to carry out the steps of: receiving from system entity, in a security service, security information in a native format of a first security domain regarding a system entity having an identity in at least one security domain, wherein the system entity comprises automated computing machinery translating the security information to a canonical format for security information; transforming the security information in the canonical format using a predefined mapping from the first security domain to a second security domain; translating the transformed security information in the canonical format to a native format of the second security domain; and returning to the system entity the security information in the native format of the second security domain.