CHANGE REQUEST	Please see embedded help file at the bottom of this
page for instructions on how to fill in this form correctly.	
	
	33.102	CR	39	Current Version:	3.2.0		
					
GSM (AA.BB) or 3G (AA.BBB) specification number 		 CR number as allocated by MCC support team	
	
For submission to: 		for approval			strategic		(for SMG	
list expected approval meeting # here 	for information			non-strategic		use only)	
			
Form: CR cover sheet, version 2 for 3GPP and SMG        The latest version of this form is available from: ftp://ftp.3gpp.org/Information/CR-Form-v2.doc	
	
Proposed change affects:	(U)SIM	 	ME		UTRAN / Radio		Core Network		
(at least one should be marked with an X)	
	
Source:	S3	Date: 	1999-12-03	
	
Subject:	Updated definitions and abbreviations	
	
Work item:	Security	
	
Category: 	F	Correction		Release: 	Phase 2		
	A	Corresponds to a correction in an earlier release			Release 96		
(only one category 	B	Addition of feature			Release 97		
shall be marked	C	Functional modification of feature			Release 98		
with an X)	D	Editorial modification	X		Release 99	X	
				Release 00		
	
Reason for 
change:
	Need for additonal definitions and abbreviations chapters.	
	
Clauses affected:	3.1, 3.3	
	
Other specs	Other 3G core specifications		  List of CRs:		
affected:	Other GSM core specifications		  List of CRs:		
	MS test specifications		  List of CRs:		
	BSS test specifications		  List of CRs:		
	O&M specifications		  List of CRs:		
	
Other 
comments:		

  <--------- double-click here for help and instructions on how to create a CR.

3	Definitions, symbols and abbreviations
3.1	Definitions
For the purposes of the present document, the following definitions apply:
Confidentiality: The property that information is not made available or disclosed to unauthorised individuals, entities or processes. 
Data integrity: The property that data has not been altered in an unauthorised manner. 
Data origin authentication: The corroboration that the source of data received is as claimed.
Entity authentication: The provision of assurance of the claimed identity of an entity. 
Key freshness: A key is fresh if it can be guaranteed to be new, as opposed to an old key being reused through actions of either an adversary or authorised party. 
USIM – User Services Identity Module.  In a security context, this module is responsible for performing UMTS subscriber and network authentication and key agreement.  It should also be capable of  performing GSM authentication and key agreement to enable the subscriber to roam easily into a GSM Radio Access Network.SIM – GSM Subscriber Identity Module.  In a security context, this module is responsible for performing GSM subscriber authentication and key agreement.  This module is not capable of handling UMTS authentication nor storing UMTS style keys.UMTS Entity authentication and key agreement:  Entity authentication according to this specification.
GSM Entity authentication and key agreement:  Entity authentication according to TS ETSI GSM 03.20
User access module: either a USIM or a SIM
Mobile station, user: the combination of user equipment and a user access module.
UMTS subscriber: a mobile station that consists of user equipment with a USIM inserted. 
GSM subscriber: a mobile station that consists of user equipment with a SIM inserted.
UMTS security context: a state that is established between a user and a serving network domain as a result of the execution of UMTS AKA. At both ends “UMTS security context data” is stored, that consists at least of the UMTS cipher/integrity keys CK and IK and the key set identifier KSI. 
GSM security context: a state that is established between a user and a serving network domain usually as a result of the execution of GSM AKA. At both ends “GSM security context data” is stored, that consists at least of the GSM cipher key Kc and the cipher key sequence number CKSN.
Quintet, UMTS authentication vector: temporary authentication data that enables an MSC/VLR or SGSN to engage in UMTS AKA with a particular user. A quintet consists of five elements: a) a network challenge RAND, b) an expected user response XRES, c) a cipher key CK, d) an integrity key IK and e) a network authentication token AUTN. 
Triplet, GSM authentication vector: temporary authentication data that enables an MSC/VLR or SGSN to engage in GSM AKA with a particular user. A triplet consists of three elements: a) a network challenge RAND, b) an expected user response SRES and c) a cipher key Kc. 
Authentication vector: either a quintet or a triplet.
Temporary authentication data: either UMTS or GSM security context data or UMTS or GSM authentication vectors.

3.3	Abbreviations
For the purposes of the present document, the following abbreviations apply:

AK	Anonymity Key
AKA	Authentication and key agreement
AMF	Authentication management field
AUTN	Authentication Token
AV	Authentication Vector
CK	Cipher Key
CKSN	Cipher key sequence number
CS	Circuit Switched
DSK(X)(data)	Decryption of "data" with Secret Key of X used for signing
EKSXY(i)(data)	Encryption of "data" with Symmetric Session Key #i for sending data from X to Y
EPK(X)(data)	Encryption of "data" with Public Key of X used for encryption
Hash(data)	The result of applying a collision-resistant one-way hash-function to "data"
HE	Home Environment
HLR	Home Location Register
IK	Integrity Key
IMSI	International Mobile Subscriber Identity
IV	Initialisation Vector
KACX	Key Administration Centre of Network X
KSXY(i)	Symmetric Session Key #i for sending data from X to Y
KSI	Key Set Identifier
KSS	Key Stream Segment
LAI	Location Area Identity
MAP	Mobile Application Part
MAC	Message Authentication Code
MAC-A	The message authentication code included in AUTN, computed using f1
MS	Mobile Station
MSC	Mobile Services Switching Centre
MT	Mobile Termination
NEX	Network Element of Network X
PS	Packet Switched
P-TMSI	Packet-TMSI
Q	Quintet, UMTS authentication vector
RAI	Routing Area Identifier
RAND	Random challenge
RNDX	Unpredictable Random Value generated by X
SQN	Sequence number
SQNUIC	Sequence number user for enhanced user identity confidentiality 
SQNHE	Sequence number counter maintained in the HLR/AuC
SQNMS	Sequence number counter maintained in the USIM
SGSN	Serving GPRS Support Node
SIM	(GSM) Subscriber Identity Module
SN	Serving Network
T	Triplet, GSM authentication vector
TE	Terminal Equipment
Text1	Optional Data Field 
Text2	Optional Data Field
Text3	Public Key algorithm identifier and Public Key Version Number (eventually included in Public Key Certificate)
TMSI	Temporary Mobile Subscriber Identity
TTP	Trusted Third Party
UE	User equipment
UEA	UMTS Encryption Algorithm
UIA	UMTS Integrity Algorithm
USIM	User Services Identity Module
VLR	Visitor Location Register
X	Network Identifier
XRES	Expected Response

Y	Network Identifier