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Animated slide,
details are lost in printed reproduction
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1.A hash over the data, including a timestamp,
is signed by querying agent with shared secret. And put on the wire.
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2.The hash data is verified using the same
secret by the receiving agent; the fact that the signature matches proves
integrity and authenticates the source of the data.
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3.The receiving agent also signs the hash over
the answer and returns it.
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4.The querying agents verifies the answer
signature.
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Note: Keys are
configured in the servers.
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Transactions
are signed: provides integrity an authentication.
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Configuration
details in part II
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