Test IKEv2.EN.I.1.1.6.2: Cryptographic Algorithm Negotiation for CHILD_SA
Part C: Encryption Algorithm ENCR_NULL (ADVANCED)
To verify an IKEv2 device properly handles the Initial Exchanges using Pre-Shared key.
* [RFC 4306] - Sections 2.7 and 3.3
* Network Topology
Connect the devices according to the Common Topology.
* Configuration
From part A to part F, configure the devices according to the Common
Configuration except for Italic parameters.
|
IKE_AUTH exchanges Algorithms |
| Encryption |
Integrity |
Extended Sequence Numbers |
| Part C |
ENCR_NULL |
AUTH_HMAC_SHA1_96 |
No Extended Sequence Numbers |
* Pre-Sequence and Cleanup Sequence
IKEv2 on the NUT is disabled after each part.
NUT TN1
(End-Node) (End-Node)
| |
|------------------->| IKE_SA_INIT request (HDR, SAi1, KEi, Ni)
| | (Judgement #1)
|<-------------------| IKE_SA_INIT Response (HDR, SAr1, KEr, Nr)
| | (Packet #1)
| |
|------------------->| IKE_AUTH request (HDR, SK {IDi, AUTH, N, SAi2, TSi, TSr})
| | (Judgement #2)
|<-------------------| IKE_AUTH Response (HDR, SK {IDr, AUTH, N, SAr2, TSi, TSr})
| | (Packet #2)
| |
|<-------------------| IPsec {Echo Request}
| | (Packet #3)
|------------------->| IPsec {Echo Reply}
| | (Judgement #3)
| |
V V
N: USE_TRANSPORT_MODE
| Packet #1 |
See Common Packet #2 |
| Packet #2 |
See Common Packet #4 |
| Packet #3 |
See Common Packet #19 |
Part C: Encryption Algorithm ENCR_NULL (ADVANCED)
15. NUT starts to negotiate with TN1 by sending IKE_SA_INIT request.
16. Observe the messages transmitted on Link A.
17. TN1 responds with an IKE_SA_INIT response to the NUT.
18. Observe the messages transmitted on Link A.
19. After reception of IKE_AUTH request from the NUT, TN1 responds with an IKE_AUTH
response to the NUT
20. TN1 transmits an Echo Request with IPsec ESP using corresponding algorithms to NUT.
21. Observe the messages transmitted on Link A.
Part C
Step 16: Judgment #1
The NUT transmits an IKE_SA_INIT request including "ENCR_3DES",
"PRF_HMAC_SHA1", "AUTH_HMAC_SHA1_96" and "D-H group 2" as proposed
lgorithms.
Step 18: Judgment #2
The NUT transmits an IKE_AUTH request including "ENCR_NULL",
"AUTH_HMAC_SHA1_96" and "No Extended Sequence Numbers" as proposed algorithms.
Step 21: Judgment #3
The NUT transmits an Echo Reply with IPsec ESP using corresponding algorithms.
* None.