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KT_271103's avatar
KT_271103
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Jul 27, 2016

SSL key generation method

Please clear below questions?   Pre-master key derived from already shared random numbers through initial handshake process. Is it correct? How master key is generating from pre-master key on both...
application delivery
Secure Web Gateway
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KT_271103's avatar
KT_271103
Icon for Nimbostratus rankNimbostratus
Jul 28, 2016

Hi Kevin, Thanks for the RFC. Checked below

Computing the Master Secret For all key exchange methods, the same algorithm is used to convert the pre_master_secret into the master_secret. The pre_master_secret should be deleted from memory once the master_secret has been computed.

  master_secret = PRF(pre_master_secret, "master secret",
                      ClientHello.random + ServerHello.random)
                      [0..47];

I could not understand above formula. It is included master secret also then 0..47? Is there for better understanding?