Hi Denis,

On 11 Feb 2019, at 16:53, denis walker <ripedenis@yahoo.co.uk> wrote:

Hi Ed

Thanks for following up on this. Just one question, have you taken into account time zones? If an update is signed now in Dubai it is 19:51. If the update is processed on Amsterdam time, it is 16:51. Will this update fail because it is 3 hours in the future?

cheers
denis
co-chair DB-WG

Good question. We rely on the Bouncy Castle cryptography library to provide the signing time for the message, and it does appear to take the timezone into account.

I tested by signing a message inside a virtual machine set to a different timezone (EST), and the signature creation time was correctly mapped to the local timezone (within a minute rather than hours).

The signed updates in production appear to confirm this - only 24 messages were more than 1 hour old, out of 118,183 (from October to December 2018), and none of these appeared to be offset by a multiple of hours.

Regards