TIA-1097-A-2011 Security Mechanisms Using GBA《采用GBA的安全机制》.pdf

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18、HE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Security Mechanisms Using GBA TIA-1097-A 1 Table of Contents 1 1 Introduction and Scope .3 2 2 References.3 3 2.1 Normative References 3 4 2.2 Informative References.3 5 3 Definitions and Abbrev

19、iations 4 6 3.1 Definitions 4 7 3.2 Abbreviations .4 8 4 Overview of GBA (Informative).5 9 4.1 Introduction to GBA.5 10 4.2 GBA Architecture.5 11 4.3 Requirements on Protocols using GBA keys6 12 5 TLS with Pre-Shared Keys .6 13 5.1 General .6 14 5.2 Ciphersuites 7 15 5.3 Signaling Flow for TLS-PSK w

20、ith GBA Keys.7 16 5.4 Resumable Session .9 17 5.5 Bootstrapping Required Indication.9 18 5.6 Bootstrapping Renegotiation Indication .9 19 5.7 Error Cases .10 20 6 DTLS with Pre-Shared Keys.10 21 6.1 General .10 22 6.2 Ciphersuites 10 23 6.3 Signaling Flow for DTLS-PSK with GBA Keys10 24 6.4 Resumabl

21、e Session .11 25 6.5 Bootstrapping Required Indication.11 26 6.6 Bootstrapping Renegotiation Indication .11 27 6.7 Error Cases .11 28 7 HTTP Digest.11 29 7.1 General .11 30 7.2 Signaling Flows for HTTP Digest with GBA Keys11 31 7.3 Bootstrapping Required Indication.13 32 7.4 Bootstrapping Renegotiat

22、ion Indication .13 33 7.5 Error Cases .13 34 8 Certificate Based NAF Authentication with Shared GBA Key MN Authentication 14 35 8.1 General .14 36 TIA-1097-A Security Mechanisms Using GBA 2 8.2 TLS Ciphersuites 14 1 8.3 Procedure14 2 8.4 Resumable Session .14 3 8.5 Bootstrapping Required Indication.

23、14 4 8.6 Bootstrapping Renegotiation Indication .15 5 8.7 Error Cases .15 6 Appendix-A Ua Security Protocol Identifier (Normative) 16 7 A.1 Definition16 8 A.2 Organization Octet16 9 A.3 Ua Protocols for cdma2000 16 10 Appendix-B: Example flow for TLS-PSK (Informative)17 11 B.1 Scope of the Signaling

24、 Flow.17 12 B.2 Key to Interpret the Signaling Flow .17 13 B.3 Signaling Flow Demonstrating a Successful TLS-PSK Authentication Procedure18 14 Appendix-C: Example Flow for HTTP Digest (Informative) .21 15 C.1 Scope of the Signaling Flow.21 16 C.2 Key to Interpret the Signaling Flow .21 17 C.3 Signal

25、ing Flow Demonstrating a Successful Digest Authentication Procedure .21 18 Security Mechanisms Using GBA TIA-1097-A 3 1 Introduction and Scope 1 This document describes profile of security mechanisms such that the mechanism can utilize 2 keys that have been generated using the Generic Bootstrapping

26、Architecture (GBA) 3. GBA 3 is a method of providing keys in a generic manner based on the cdma20001authentication 4 methods. Similar work has been carried out by 3GPP, see 8 and 9 as part of their General 5 Authentication Architecture work 6 6 2 References 7 2.1 Normative References 8 1 “The TLS Pr

27、otocol Version 1.0”, Dierks, IETF RFC 2246. 9 2 “Transport Layer Security (TLS) Extensions”, IETF RFC 3546. 10 3 3GPP2 S.S0109 “Generic Bootstrapping Architecture” 11 4 “Pre-Shared Key Cyphersuites for Transport Layer Security (TLS)”, IETF RFC 4279 12 10 “HTTP Authentication: Basic and Digest Access

28、 Authentication”, Franks, IETF RFC 13 2617 14 11 “Advanced Encryption Standard (AES) Ciphersuites for Transport Layer Security 15 (TLS)”, Chown, IETF RFC 3268. 16 12 “Datagram Transport Layer Security”, IETF RFC 4347 17 13 ETSI TS 129 109 V7.7.0: “Generic Authentication Architecture (GAA); Zh and Zn

29、 18 Interfaces based on the Diameter protocol; Stage 3,“ October 2007. 19 2.2 Informative References 20 5 TIA-820 “Removable User Identity Module for Spread Spectrum Systems” 21 6 3GPP TR 33.919 “Generic Authentication Architecture (GAA); System description” 22 7 3GPP TS 24.109 Rel-6 “Bootstrapping

30、Interface (Ub) and network application 23 function interface (Ua): Protocol details” 24 8 3GPP TS 33.220 “Generic Authentication Architecture (GAA); Generic bootstrapping 25 architecture” 26 1cdma2000is the trademark for the technical nomenclature for certain specifications and standards of the Orga

31、nizational Partners (OPs) of 3GPP2. Geographically (and as of the date of publication), cdma2000is a registered trademark of the Telecommunications Industry Association (TIA-USA) in the United States. TIA-1097-A Security Mechanisms Using GBA 4 9 3GPP TS 33.222 Rel-6 “Generic Authentication Architect

32、ure (GAA); Access to 1 network application functions using Hypertext Transfer Protocol over Transport 2 Layer Security (HTTPS)” 3 3 Definitions and Abbreviations 4 3.1 Definitions 5 Mobile Node For the purposes of this document, the Mobile Node is considered as two 6 separate entities, the User Iden

33、tity Module (UIM) and Mobile Equipment 7 (ME). 8 User Identity Module (UIM): The User Identity Module is a low power 9 processor that contains secure memory. The User Identity Module may be a 10 Removable-UIM (R-UIM 5) or part of the Mobile Node itself. 11 Removable UIM (R-UIM): An UIM that can be p

34、hysically removed 12 from the ME. An R-UIM may be used in multiple MEs. 13 Mobile Equipment (ME): The ME contains a high power 14 processor, but is not assumed to contain secure memory or secure processing. 15 Transport Layer Security (TLS) Protocol Transport layer protection of data. 16 Cipher suit

35、e A description of the set of algorithms used for authentication, key 17 agreement 18 TLS Handshake Protocol A sub protocol of TLS that performs the functions 19 of authentication, cipher suite agreement and session secret 20 establishment for securing application data. The handshake may 21 either e

36、stablish a new master secret, or resume a previous session 22 using the master secret established during that session. 23 TLS using a Pre-Shared Key TLS-PSK: A set of cipher suites for the TLS 24 Protocol in which a Pre-Shared Key (PSK) is used for mutual 25 authentication between the client and the

37、 server. 26 3.2 Abbreviations 27 BSF Bootstrapping Server Function 28 DTLS Datagram Transport Layer Security 29 DTLS-PSK DTLS using a Pre-Shared Key (PSK) 30 GBA Generic Bootstrapping Architecture 31 ME Mobile Equipment 32 MN Mobile Node 33 Security Mechanisms Using GBA TIA-1097-A 5 NAF Network Appl

38、ication Function 1 R-UIM Removable UIM 2 TLS Transport Layer Security 3 TLS-PSK TLS using a Pre-Shared Key (PSK) 4 UIM User Identity Module 5 4 Overview of GBA (Informative) 6 4.1 Introduction to GBA 7 The aim of GBA is to provide a method of generating keying material that can be used by an 8 MN an

39、d a Network Application Function (NAF). This keying material is generated using 9 methods based upon the cdma2000 authentication methods. Full details of GBA can be found 10 in 3 and are summarized below in section 4.2. The description of protocols that use GBA 11 generated keys are given in this do

40、cument. Section 4.3 describes the functionality for a 12 protocol to be able to use GBA derived keys. 13 4.2 GBA Architecture 14 15 Figure 1 GBA Architecture 16 Figure 1 gives the architecture for GBA. The following is a brief description of the GBA (for 17 full details see 3). 18 The MN and BSF run

41、 the bootstrapping procedure in order to generate a shared key, Ks, and 19 the bootstrapping identity, B-TID. The B-TID is the unique identifier that is used in GBA. The 20 BSF retrieves the necessary authentication material from the HLR/HSS/AAA depending on the 21 BSFUENAFHLR AAAUbUa Zh1 Zh2 Zh3ZnM

42、N HSSTIA-1097-A Security Mechanisms Using GBA 6 authentication method used. The Ks will be stored in either the ME or the UIM and the BSF 1 will know where it is stored. 2 The interaction between the MN and NAF is described in this document. As part of this the 3 MN and NAF must agree on the NAF ide

43、ntity and the MN must pass the B-TID to the NAF. 4 The NAF interacts with the BSF to request the keying material to use with the MN. The NAF 5 sends the B-TID and other parameters to the BSF, which uses these and Ks to calculate the 6 keying material for the NAF. The MN has access to the same parame

44、ters and can calculate the 7 key for itself. The reference point Zn is specified in TS 29.109 13. 8 When Ks is held on the ME, the keying material sent to the NAF from the BSF is called 9 Ks_NAF. If Ks is held on the UIM, the NAF is sent Ks_ext_NAF and Ks_int_NAF from the 10 BSF. Both Ks_ext_NAF and

45、 Ks_int_NAF are generated in the UIM. Ks_int_NAF is never 11 given out of the UIM, whereas Ks_ext_NAF is given to the ME. 12 4.3 Requirements on Protocols using GBA keys 13 Using GBA keys places the following requirements on a protocol 14 1. The MN and NAF must agree on a NAF identity (NAF-ID). 15 2

46、. The MN must pass the B-TID to the NAF. 16 3. The NAF must be able to fetch the keying material from the BSF during the protocol 17 after it has received the B-TID. 18 4. The MN and NAF must have some way of agreeing that GBA generated keys will be 19 used. 20 5 TLS with Pre-Shared Keys 21 5.1 Gene

47、ral 22 This section describes the case where the TLS application resides in the ME. In this case, 23 Ks_(ext_)NAF shall be used to create the TLS tunnel between the ME and NAF. 24 The method of using GBA generated keys in TLS with pre-shared keys follows that given in 25 clause 5.4 of 9 with further

48、 details in clause 5.3.3 of 7. 26 The Ua security protocol identifier for protocol shall be (0x01,0x00,0x01,yy,zz) where “yy,zz” 27 is the protection mechanism CipherSuite code according to the defined values for TLS 28 CipherSuites in 1 and 4. 29 Both the MN and the NAF shall support the features o

49、f GBA as described in 3. They shall 30 also support the TLS 1.0 1 and TLS-PSK 4. Additionally both the MN and NAF shall 31 support the server_name TLS extension as described in RFC 3546 2. All other TLS 32 extensions are optional. 33 Security Mechanisms Using GBA TIA-1097-A 7 5.2 Ciphersuites 1 The MN shall support the CipherSuite TLS_PSK_WITH_AES_128_CBC_SHA. All other 2 Cipher Suites as defined in TLS-PSK 4 are optional for implementation on the MN. 3 The NAF shall support the CipherSuite TLS_PSK_WITH_AES_128_CBC_SHA