Section: 5.11.1.1 Ciphering algorithm identifier values
Content: All identifiers and names specified in this sub-clause are for 5G NAS and New Radio. In relation to AS capabilities, the identifiers and names for E-UTRAN connected to 5GC are specified in TS 33.401[ 3GPP System Architecture Evolution (SAE); Security architecture ]  [10]. Each encryption algorithm will be assigned a 4-bit identifier. The following values for ciphering algorithms are defined: "00002" NEA0 Null ciphering algorithm; "00012" 128-NEA1 128-bit SNOW 3G based algorithm; "00102" 128-NEA2 128-bit AES based algorithm; and "00112" 128-NEA3 128-bit ZUC based algorithm. 128-NEA1 is based on SNOW 3G (see TS 35.215[ Specification of the 3GPP Confidentiality and Integrity Algorithms UEA2 & UIA2; Document 1: UEA2 and UIA2 specifications ]  [14]). 128-NEA2 is based on 128-bit AES [15] in CTR mode [16]. 128-NEA3 is based on 128-bit ZUC (see TS 35.221[ Specification of the 3GPP Confidentiality and Integrity Algorithms EEA3 & EIA3; Document 1: EEA3 and EIA3 specifications ]  [18]). Full details of the algorithms are specified in Annex D.