Attach Request IE in LTE

The new 5G system brings high demands on cryptographic algorithms used for air encryption. Ericsson Research together with Lund University have revised the design of SNOW 3G and updated it to a new faster cipher called SNOW-V , which could be used to secure 5G and the coming mobile systems.

Possible algorithms are: 128-eia0: Null ciphering algorithm (128-EIA0) for LTE integrity as the integrity algorithm for security procedures. 128-eia1: SNOW 3G synchronous stream ciphering algorithm (128-EIA1) for LTE integrity as the integrity algorithm for security procedures.

While integrity check is a mandatory function, ciphering is an optional function. NAS security keys, such as integrity key (KNASint) and ciphering key (KNASenc), are derived by UEs and MMEs from K ASME. AS Security. AS security is purposed to ensure secure delivery of data between a UE and an eNB over radio links.

Ciphering 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).