I suspect that a front end that makes r---r parametric, but a small integer--retries will , as a practical matter, solve your problem.
What you of course need are data, an EFD of the differences between successive sign-on times T(i) and T(i+1). This distribution may differ greatly from one application to another; and, crucially, it will be change for the same application as the number of its users grows. There are some standard q On 11/12/12, Charles Mills <charl...@mcn.org> wrote: > 1. A given PassTicket may only be used once (source > http://publib.boulder.ibm.com/infocenter/cicsts/v3r1/index.jsp?topic=%2Fcom. > ibm.cics.ts31.doc%2Fdfht5%2Ftopics%2Fdfht516.htm) > > 2. The PassTicket algorithm is deterministic: given the same time of day > (resolution one second), the same userid, the same application ID, and the > same secured signon application key, the algorithm will always produce the > same PassTicket (experimentation reveals this to be true). > > Consider a distributed application. Some large number of automated clients > sign on to some service at quasi-random intervals. A perfect application > for > PassTickets, right? But if a second client tries to log on within the same > TOD second as an earlier client, the sign-on will be rejected because the > generated PassTicket has already been used. What is the client to do? The > obvious answer is "wait a second and try again" but that approach has some > obvious shortcomings, one of which being there is no guarantee that THAT > PassTicket has not already been used. > > Yes, one solution would be a unique userid for each client, but suppose > this > is some "mass image rollout" application or there is some other reason why > unique userids are not desirable. > > What to do? > > Charles > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- John Gilmore, Ashland, MA 01721 - USA t. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
