top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

LTE: What are all KDF used in LTE ?

0 votes
934 views

In 3GPP 33.401, KDF is shown.
What is KDF and what does exactly mean ?

posted Jun 19, 2014 by Harshita

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

+1 vote

KDF are the key derivation function. These are the algorithms used to generate the keystream, these keystream is used as the security keys for the ciphering and integrity.
As in LTE no security keys are exchanged on radio interface.
These KDF uses underlying algorithm to generate the keys. (e.g to generate KeNB key underlying algorithm HMAC SHA 256 is used for KDF.)

answer Jun 20, 2014 by Sanjeet Kumar
Similar Questions
+5 votes

One more related question : Does the same COUNT value used for both integrity protection and ciphering of SDU ?

0 votes

Authentication Request message carries AUTN value which in turn has AMF field. What does it mean ?

...