Introduction

The is currently focus on the possible development on powerful quantum computers. It not sure when quantum computers become powerful enough to be a threat to current asymmetric cryptographic algorithms but would be careless not to take appropriate action in time by establishing crypto agility. Crypto agility is the ability to adapt to more secure cryptographic algorithms without significant changes to the system structure. Orderly migration of cryptographic algorithms requires some built-in capabilities in the communication protocols. It is a major part of Rec. ITU-T X.510 | ISO/IEC 9594-11 that provides guidelines for how to obtain crypto agility. It is necessary that migration capabilities are designed in such a way that not everybody must migrate at the same time (no big-bang migration).