The Rolling Key Problem

Description of Rolling Key Problem

When dealing with Blockchain wallets like MetaMask the private key inside the wallet can manage 100's of separately managed assets. Each of these assets needs a separate transaction in order to be controlled by another private key. This issue induces friction for the user to roll their keys. Rolling your keys is a security practice where a users generates a new private key, uses their old public/private key to sign their new public key so people know who they are, and then deletes their old private key. This is a good security practice as the more devices our mnemonic touches increases the surface area to attackers. Migrating all assets from one controlling private key to another should be as simple as sending a single one of those assets from the original private/public key to another private/public key.

Background

In the world of PGP everyone states the date that their private/public key is going to be destroyed as part of their named signature. Destroying your private keys after a specific date in order to avoid persecution is a good security practice that blockchain fails to support.