name: R99
full_form: Release 99
context: R99+ ME with a SIM inserted, shall participate only in GSM AKA. GSM AKA results in the establishment of a GSM security context; the GSM cipher key Kc and the cipher key sequence number CKSN are stored in the ME. When the user is attached to a UTRAN, R99+ ME shall derive the UMTS cipher/integrity keys CK and IK from the GSM cipher key Kc using the conversion functions c4 and c5. The ME shall handle the STARTCS and STARTPS as described in section 6.4.8 with the exception that the START values shall be stored in non-volatile memory on the ME rather than on the GSM SIM. If a different SIM is inserted then the ME shall delete the GSM cipher keys for the PS and CS domain (Kc), the derived UMTS cipher/integrity keys (CK and IK) for the PS and CS domain, and reset the START values to zero. The ME shall then trigger a new authentication and key agreement at the next connection establishment by indicating to the network that no valid keys are available for use using the procedure described in section 6.4.4. When the user is attached to a UTRAN, a R99+ ME with a SIM inserted shall use a default value of all ones for maximum value of STARTCS or STARTPS. The ME shall handle the maximum value of STARTCS or STARTPS as described in section 6.4.3 with the exception that the maximum value of STARTCS or STARTPS is stored on the ME rather than on the GSM SIM.
description: Release 99 (R99) refers to a specific set of standards and specifications within the 3GPP framework, focusing on the security aspects and key management for mobile devices. It outlines the procedures for authentication, key agreement, and ciphering in GSM and UMTS networks. R99+ compliant Mobile Equipment (ME) with a SIM inserted participates only in GSM AKA, resulting in the establishment of a GSM security context. This involves the derivation of UMTS cipher/integrity keys from the GSM cipher key Kc using specific conversion functions. The ME handles START values differently based on whether it is attached to a UTRAN or not, and it triggers a new authentication and key agreement when a different SIM is inserted or no valid keys are available.
explanation: R99 is classified as a Specification because it provides detailed technical standards for the implementation of security features in mobile networks. It outlines specific procedures and protocols that devices must follow to ensure secure communication, aligning with the broader goals of the 3GPP in standardizing telecommunications technologies.
section_title: 6.8.2.4 R99+ ME
biotag_Context: O,B-Network Function,O,O,B-Device,O,O,O,O,O,B-Network,O,B-Network,B-Protocol,O,O,O,O,O,O,B-Network,O,O,O,B-Network,O,O,B-Parameter,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Technology,O,O,B-Parameter,O,B-Parameter,O,O,B-Network,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Network,O,O,O,O,B-Device,O,O,O,O,B-Network Function,O,O,O,B-Network,O,O,O,O,B-Mode,O,B-Mode,O,O,O,O,B-Technology,O,O,O,O,O,O,O,B-Mode,O,B-Mode,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,B-Network Function,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Network,O
biotag_Description: B-Specification,I-Specification,O,O,O,O,O,O,O,O,O,O,O,O,B-Organization,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,B-Technology,O,O,O,B-Device,I-Device,O,O,O,B-Device,O,O,O,O,B-Network,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,B-Technology,O,O,O,O,B-Network,O,O,B-Parameter,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O