Judge this protocol. Select all that apply.

Alice to Bob $-"$I$\text{'}$m Alice", $[\{$T$\}$Bob$]$Alice

Bob to Alice $-[\{$Ks$\}$Alice $]$Bob

Where T is the timestamp, Ks is the session Key.

$\{...\}$ is encryption with specified PUBLIC key.

$[...]$ is encryption with specified PRIVATE key.