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Increasing the Root Zone ZSK Size
Verisign, in its role as Root Zone Maintainer, plans to increase the size of the root zone Zone Signing Key (ZSK) in 2016. The ZSK has been a 1024-bit RSASHA256 key since the initial deployment of DNSSEC to the root zone in 2010. In the latter half of 2016, the ZSK size will be increased to 2048-bits.
In this presentation we will outline the schedule for the change, describe various technical and non-technical details for implementing the change, describe how the change will affect root zone response sizes, and our plans for emergency fallback to a 1024-bit in the unlikely event it should be necessary.