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canttalkeating's avatar
canttalkeating
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Sep 07, 2019

Capturing Pre-Master Secret (Symmetric key) using ssldump utility

Hello all,   I have been testing the ssldump utility to try and decrypt TLS traffic on the server-side but I cannot get the ssldump utility to capture the RSA Session Keys and output them to a .p...
canttalkeating's avatar
canttalkeating
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Sep 08, 2019

Hi Dario,

 

There isn't a ServerKeyExchange in this flow only a ClientKeyExchange. The only time a ServerKeyExchange would be sent from the back-end server would be if we were using Diffie-Helman ciphers which allows the Client instigating the connection to obtain more information from the Server in order to derive a PreMaster Secret (symmetric key).

 

Thanks for link, i'll give it a good read over

 

Cheers,

 

David