New answers tagged asymmetric
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Goal of Diffie–Hellman: secretly share a number between two parties over an open channel.
First recall from school these exponentiation rules: (xᵃ)ᵇ=xᵃᵇ=xᵇᵃ e.g. (2³)⁴=(2⁴)³=4096. The idea is that if Alice sends x and xᵃ to Bob then neither Bob nor anyone else can calculate a. It's easy to say what 2³ is, but given 8 it's hard to say which power 2 has to ...
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The servers each need a own secret (shared secret or public/private keys where the public part is known to the API server or signed by it/a CA).
Each server then identifies itself and gets access to the data it is allowed!
If one server is compromised, you delete the shared secret/public key from the API server or revoke the certificate.
You can look at ...
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