Hi ,
I found some document and website said If you are using encryption or authentication algorithms with a 128-bit key, use Diffie-Hellman groups 14,19, 20. If you are using encryption or authentication algorithms with a 256-bit key or higher.
So please let me know is it correct ? why ?
i also want to know if ike phase 1 use 128 key lenght ( aes128, sha128 , and if phase 2 will use 256 ( aes 256,sha256), what will happen ? can i do like that ?