SecurID and garage door openers

2005-10-18 Thread Travis H.
Speaking of two-factor authentication, can anyone explain how servers validate the code from a SecurID token in the presence of clockskew? Does it look backwards and forwards in time a few minutes? Similarly, how do those garage door openers with rolling codes work, given that the user may have

Re: SecurID and garage door openers

2005-10-18 Thread maf
On 18 okt, Greg Rose wrote: Similarly, how do those garage door openers with rolling codes work, given that the user may have pressed the button many times accidentally while out of range of the receiver? Ahh, one of the dirty little secrets. If the base receives two sequential outputs from a

Re: SecurID and garage door openers

2005-10-18 Thread Joseph Ashwood
- Original Message - From: Travis H. [EMAIL PROTECTED] Subject: SecurID and garage door openers Similarly, how do those garage door openers with rolling codes work, given that the user may have pressed the button many times accidentally while out of range of the receiver? My