metamask extension | services blockchain
User configurations are stored on MetaMask servers, encrypted with a specially generated key only the user owns. Nobody other than the user can read the configurations.
Where and how do you store user configurations?
User configurations are stored on MetaMask servers, encrypted with a specially generated key only the user owns. Nobody other than the user can read the configurations. When you login, we create a client-side key by getting the hash that results from applying your account's signature to a given message. This means the key is deterministic: that is, the result of this signature will always be the same when the same account signs the same message. We use this key to perform client-side encryption of all your user configurations before sending them to MetaMask servers.
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