Hello Irfan! Really cool work you are doing! But. It's not so clear about session Key for the NAS ciphering. Here you mentioned that session key is a Kasme and Ck does not realy used for ciphering. But it's not true as I understand. Kasme need to securely transfer Ck used to securaly transfer Ck Ik to the mobile as I understand. Than mobile use KDF to derive Ck Ik from the Kasme
Can you please provide reference. My naming is not the best, since I use CK, IK for at the HSS, at the MME and the eNB. From 33.401 figure 6.2-1, Kasme -> KDF-> (K_NASenc, K_NASint), which is what I have also shown. You never transfer keys on the radio from MME to the UE.
wanderfull session and your PPT, thanks a lot
the best explanation I've seen so far. thanks!
So Glad that you are back Irfan
After long time.. Nice to see u again
Thank you so Much Irfan sir after a long time!!!!
After a long time.. Really waiting for your new videos on nbiot n catm..
Hello Irfan!
Really cool work you are doing!
But. It's not so clear about session Key for the NAS ciphering. Here you mentioned that session key is a Kasme and Ck does not realy used for ciphering. But it's not true as I understand. Kasme need to securely transfer Ck used to securaly transfer Ck Ik to the mobile as I understand. Than mobile use KDF to derive Ck Ik from the Kasme
Can you please provide reference. My naming is not the best, since I use CK, IK for at the HSS, at the MME and the eNB. From 33.401 figure 6.2-1, Kasme -> KDF-> (K_NASenc, K_NASint), which is what I have also shown. You never transfer keys on the radio from MME to the UE.