Need of both Integrity and ciphering for RRC message

Hello All,

What is the need of integrity and ciphering encryption for an RRC message?

Ciphering provides secrecy. Integrity provides tamper-evidence

Ciphering, also known as encryption, ensures that intruders cannot read the data and signalling messages that the mobile and network exchange. Ciphering can be applied to both U-Plane Data and C-Plane Data (RRC/NAS Message)

Integrity protection ensures that the intruder cannot replay or modify signalling messages that the mobile and network exchange. It protects the system against problems such as man-in-middle attacks, in which an intruder intercepts a sequence of signalling messages and modifies and re transmits them, in an attempt to take control of the mobile. This algorithm applies only to C-Plane data (NAS message).