pre-shared key AND D-H
I was going through INE Sec Videos and found that during IKE Phase 1 peers agrees on following parameters.
Authentication Methos (Preshared Keys).
D-H Group(Encrypting/Decrypting Keys ).
I can not understand that how we are using Symmitric Crypto(PSK) and Asymmirtric Crypto(D-H) at the same time..?
Are they doing different jobs at different instance...?
Appreciate for your support.