Ceremony of the Keys (London) after the Tower. The event is usually sold out at least 12 months in advance. Ceremony of the Keys (London) The Ceremony of the Keys is an ancient ritual, held every evening at the Tower of London, when the main gates are locked for the night. It is said to be the oldest military ceremony in the world, and is the best-known ceremonial tradition of the Tower. At exactly 9.53 pm, the Chief Yeoman Warder, dressed in Tudor watchcoat and bonnet, and carrying a candle lantern, leaves the Byward Tower and falls in with the Escort to the Keys, a
Key ceremony root key is broken into as many as twenty-one parts and each individual part is secured in its own safe for which there is a key and a numerical lock. The keys are distributed to as many as twenty-one people and the numerical code is distributed to another twenty-one people. The CA vendors and organisations that would implement projects of this nature where conducting a root key ceremony would be a central component of their service would be organisations like, for example; RSA, VeriSign and Digi-Sign. Key ceremony In public-key cryptography and computer security, a root key ceremony is a