docs: updated puml diagrams

docs/protocols/join.puml

@@ -4,20 +4,20 @@
 'end title
 autonumber
 
-box "Platform"
+box "IoT Platform"
 participant TPM
-participant "Attester\nAgent" as attester_agent
+participant "EMBRAVE\nAgent" as attester_agent
 endbox
 participant "Join\nService" as join_service
 
 '== LAK creation ==
-TPM<-attester_agent: tpm2_createak
+TPM<-attester_agent: Request for AK creation
 TPM<-TPM: Generate AK
 
 '== Start Join protocol ==
 TPM<-attester_agent: request EK_cert
 TPM->attester_agent: EK_cert
-attester_agent->join_service: POST /api/request_join: AK pub, AK name, EK cert
+attester_agent->join_service: POST /api/request_join: AK pub, AK name, EK cert\n                                      IP address, port, Whitelist URI
 note right
 The attester notifies its presence.
 The join server responds with a challenge.
@@ -31,9 +31,9 @@ end note
     TPM is authentic
     (validation of the EK certificate OK)
   end note
-  join_service->join_service: challenge = tpm2_makecredential(EK_pub, nonce, AK_name)
+  join_service->join_service: challenge = TPM2_MakeCredential(EK_pub, nonce, AK_name)
   attester_agent<-join_service: challenge
-  TPM<-attester_agent: tpm2_activatecredential
+  TPM<-attester_agent: TPM2_ActivateCredential
   note left
     tpm_activate credential verifies
     the possession of AK_priv, EK_priv
@@ -43,7 +43,7 @@ end note
   TPM<-TPM: activate_credential(EK_priv, challenge)
   TPM->attester_agent: nonce
   attester_agent->join_service: POST /api/confirm_credential: nonce
-  join_service->join_service: Update Attester credential in the DB
+  join_service->join_service: Store Attester credential in the DB
   join_service->Verifier: notify a Verifier to start RA on the new Attester
 ' end