Step 1. Decode the value of nonce by base 64nonce : EBP7NsN3GpoTmm2G1/PRA2kQAHNI/rtBAABe2iwhzwRHgQ==Decoded Data : 1013fb36c3771a9a139a6d86d7f3d1036910007348febb4100005eda2c21cf044781 Step 2. Send the value of nonce to SIM.nonce : This value is RAND + AUTN from the network.APDU : CLA(Channel ID), INS(88), P1(00), P2(81 - See. spec. 31.103 - 7.1.2), Total Length, Data (RAND Length + RAND Data + A..

When a VoLTE client needs to connect to IMS network, it has to authenticate the network while network also needs to make sure that only the correct user is registered to its network. AKA Digest is one of the scheme to authenticate VoLTE client to the IMS server AKAAKA stands for "Authentication and key agreement". This scheme comes from the legacy 3gpp networks and has been widely used in LTE, 3..