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Spec #CR #Revision #Impacted VersionTarget ReleaseTitleWG TDoc #WG statusTSG TDoc #TSG statusNew Version
03.20A025-8.2.0R1999Clarification on A5 algorithm supportS3-060378agreedSP-060374approved8.3.0
03.20A024-8.1.0R1999Recommendation not to support A5/2 in new terminalsS3-060146agreedSP-060046approved8.2.0
03.20A023-8.0.0R1999GPRS Ciphering algorithm negotiationS3-000252agreedP-00-309approved 
03.20A022-7.2.0R1998GPRS Ciphering algorithm negotiationS3-000252agreedP-00-309approved 
03.20A021-8.0.0R1999GPRS encryption- P-00-126postponed 
03.20A020-7.2.0R1998GPRS encryption- P-00-126postponed 
03.20A019-6.1.0R1997GPRS encryption- P-00-126postponed 
03.20A018-7.1.0R1998Clarification on security triplet re-use conditionsAP99-112 P-99-743approved7.2.0
03.20A017- R1999Introduction of EDGE variant of A5 algorithmAP99-100 P-99-743approved8.0.0
03.20A01647.0.0R1998Correction of the handling of the Ciphering Key Sequence Number (CKSN)N1-99354 P-99-456approved7.1.0
03.20A015-5.2.1R1996Clarification on security triplet re-use conditionsAP99-050agreedp-99-530postponed 
03.20A014-7.0.0R1998CTS Security functions in case of license exempt frequenciesAP99-030agreedp-99-530approved7.1.0
03.20A013-7.0.0R1998Introduction of CTS-FP authentication and signature generation by CTS-SN.AP99-055agreedp-99-530approved7.1.0
03.20A012- R1997Clarification on security triplet re-use conditionsAP99-051agreedp-99-530postponed 
03.20A0114 R1997Correction of the handling of the Ciphering Key Sequence Number (CKSN)N1-99354 P-99-456approved6.1.0
03.20A010- R1998Proposed annex E on CTS security- P-99-117approved7.0.0
03.20A0071 R1997GPRS security183/97agreed97-778approved 
03.20A0061 R1997GPRS interaction with existing security mechanisms182/97agreed97-778approved 
03.20A00415.0.0R1996Ciphering Algorithm(s) support (phase 2+)97P131agreed181/97approved5.1.0
03.20A00334.3.2Ph2Ciphering Algorithm(s) support (phase 2)97P131agreed181/97approved4.4.0
03.20A0024 R199603.20-A002r4 on Definition of ciphering for HSCSD97P043agreed132/97approved5.1.0
03.20A0022 R1996Definition of ciphering for HSCSD96P134agreed-approved5.1.0
03.20A001- Ph2Length of ciphering key Kc for signalling and testing purposes- 157/96approved4.3.2
03.200029-8.5.0R1999Recommendation to support A5/3 and explicit prohibition of non-standard A5 algorithms in MSS3-070887agreedSP-070784approved8.6.0
03.20002828.4.1R1999Prohibiting A5/2 in mobile stations and other clarifications regarding A5 algorithm support- SP-070671approved8.5.0
03.20002818.4.1R1999Prohibiting A5/2 in mobile stations and other clarifications regarding A5 algorithm supportS3-070646agreedSP-070593revised 
03.200028-8.4.1R1999Prohibiting A5/2 in mobile stations and other clarifications regarding A5 algorithm supportS3-070569revised-  
03.200027-8.3.0R1999Correction of implmentation error of A025- SP-060907approved8.4.0
03.200026-8.3.0R1999A5/2 removal from new MSS3-060790agreedSP-060793rejected 
03.200025- Ph2Support of encryption algorithms---agreed328/94approved4.3.0
03.2000241 Ph2Error Correction and Clarifications274/94agreed215/94approved4.3.0
03.200024- Ph2Error Correction and Clarifications256/94revised-  
03.200023- Ph2Editorial improvement663/93withdrawn-  
03.200022- Ph2Support of multiple ciphering algorithms231/93agreed453/93approved 
03.200021- Ph2Different A5 Algorithms198/93postponed-  
03.2000204 Ph2Purging of the MS in the HLR929/92postponed-  
03.2000203 Ph2Purging of the MS in the HLR751/92revised-  
03.2000202 Ph2Purging of the MS in the HLR-revised-  
03.200019- Ph2-- -  
03.200018- Ph2Editorial Changes agreed on SMG3/WPC ad hoc Meeting in 1992766/92postponed-  
03.2000172 Ph2Support of multiple ciphering algorithms- 157/93approved 
03.2000171 Ph2Support of multiple ciphering algorithms702/92agreed112/93revised 
03.200017- Ph2Support of multiple ciphering algorithms-revised-  
03.200016- Ph2Editorial updating (Working version 4)-- -approved 
03.2000152 Ph2Support of Multiple Ciphering and Authentification Algorithms662/92agreed451/92approved 
03.2000151 Ph2Support of Multiple Ciphering and Authentification Algorithms616/92revised-  
03.200015- Ph2Negotiation of A5 algorithm437/92agreed342/92approved 
03.200014- Ph2Handling of TMSI reallocation failure436/92agreed342/92approved 
03.2000132 Ph2Reuse of Authentification Triplets- 385/92approved 
03.2000131 Ph2Reuse of Authentication Triplets366/92agreed342/92revised 
03.200013- Ph2Reuse of Authentication Triplets263/92revised-  
03.2000112 Ph2Transport of Ki to HLR and VLR262/92agreed342/92approved 
03.200011-3.3.2Ph1Transport of Ki to HLR and VLR- -  
03.2000102 Ph1Format of COUNT parameter520/90agreed45/91approved 
03.2000091 Ph1Clarification of COUNT parameter- 329/90r1withdrawn 
03.200008- Ph1Length of the Authentication parameter RAND16/90agreed7/90approved 
03.200007- Ph1Maximum length of the security keys Ki and Kc16/90agreed7/90approved 
03.200006- Ph1Identifying method- -approved 
03.200005- Ph1Authentication procedure- -approved 
03.200004- Ph1Ciphering key sequence number- -approved 
03.200003- Ph1storage of Kc in the SIM- -approved 
03.200002- Ph1removing reference to Rec. GSM 03.21- -approved 
03.200001- Ph1Key Kc at Handover- -approved