"James A. Donald" <[EMAIL PROTECTED]> writes: > Perry E. Metzger wrote: >> The call-the-customer-and-reissue mechanism is a >> mediocre solution to the fraud problem, but it is the >> one we have these days. > > Why is it a mediocre solution? > > The credit card number is a widely shared secret. It > has been known for centuries that widely shared secrets > have a short life expectancy and should be frequently > re-issued. > > The only better solution is unshared secrets. Is that > what you had in mind?
Naturally. However, given what we have now, reissue is the only reasonable option. -- Perry E. Metzger [EMAIL PROTECTED] --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
