US Patent 11997190 Credential management in distributed computing system

A computing node in a distributed information security system, wherein the computing node is adapted to communicate with a subset of clients of the distributed information security system, wherein the computing node provides at least one cryptographic service for the clients of the subset, wherein the computing node is provisioned with a plurality of keys for use by said at least one cryptographic service, wherein the computing node is adapted to associate a key from the plurality of keys to a service request for a client according to a deterministic process based on one or more data associated with the client. A distributed information security system comprising a plurality of such nodes is also described, together with a method of providing a cryptographic service at such a computing node.