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Mastering Internet of Things by Peter Waher

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Authenticating clients

Each broker is responsible for authenticating its clients. This is done using the extensible Simple Authentication and Security Layer (SASL). The broker references the authentication methods available, in order of preference, and the client chooses the first method it recognizes. Communication between entities in the network cannot begin before the clients have been successfully authenticated and activated by the corresponding broker.

Once a client has been authenticated, its authenticated identity will always be forwarded in any communication it performs. It is this federated mechanism of authenticated users and forwarding their authenticated identities that will have huge data protection implications, It simplifies ...

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