Decrypting encrypted traffic

retag add tags

Hello;

I have the server certificate and the private key. Further, I also have the encrypted packet capture file that has the complete communication between the client and the server. Will I be able to decrypt it just by following the TLS standards, or do I need anything else ?

See the Wiki page on TLS.

As explained on the page, decrypting traffic using the RSA private key only works in a limited number of cases.

Using the keylogfile method to get per-session secrets works in all cases.

23.8k

grahamb

answered 2019-07-04 11:55:15 +0000

edit flag offensive 0 remove flag delete link

Comments

Thank you for the response !

I have access to the server that the clients connect to, and can execute any piece of code on the server. Will that make any difference ?

shyamk4577 (2019-07-09 08:29:00 +0000) edit

You could force the server config to not allow TLS 1.3 and to not use any ciphers other than RSA ones. Basically the opposite of hardening.

I'm not sure if the server software can be persuaded to write a keylogfile. What are you using on the server?

grahamb (2019-07-09 10:59:02 +0000) edit

add a comment see more comments

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account. This space is reserved only for answers. If you would like to engage in a discussion, please instead post a comment under the question or an answer that you would like to discuss.

Decrypting encrypted traffic edit

Comments

1 Answer

Comments