Typical Authentication Request

Transaction Identifier or Skip Indicator [4 bits] = 0x0 [ 0 ]

Protocol Discriminator [4 bits] = 0x5 - Mobility Management [ 5 ]

Message Type [8 bits] = 0x12 - Authentication Request [ 18 ]

Spare Half Octet [4 bits] = 0x0 [ 0 ]

Ciphering Key Sequence Number

Spare Bits [1 bit] = 0x0 [ 0 ]

Key Sequence [3 bits] = 0x0 - Ciphering Key Sequence Number [ 0 ]

Authentication Parameter Rand = 0xD5770C6D363E30C364A4078F1BF8ED3A

Authentication Parameter AUTN

IE Identifier [8 bits] = 0x20 [ 32 ]

IE Length [8 bits] = 0x10 [ 16 ]

value = 0x90EE81AE794755552BAAB4F68F106391