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A Secure Mobile IP Authentication based on Identification Protocol

A Secure Mobile IP Authentication based on Identification Protocol. Authors: Doo Ho Choi, Hyungon Kim and Kyoil Jung

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A Secure Mobile IP Authentication based on Identification Protocol

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  1. A Secure Mobile IP Authentication based on Identification Protocol Authors: Doo Ho Choi, Hyungon Kim and Kyoil Jung Source: International Symposium on Intelligent Signal Processing and Communication Systems 2004 (Proceedings of ISPACS 2004 18-19 Nov. 2004) Page(s):709 - 712 Presenter: Jung-wen Lo(駱榮問) Date: 2005/12/22

  2. Introduction • Mobile IP • MN: Mobile NodeHA: Home AgentFA: Foreign Agent • Vulnerable to replay attack => FA authenticates the identity of HA or MN in the registration process • Identification Protocol • A cryptography protocol which is designed to allow one party to gain assurances that the identity of another is as declared Correspondent node Mobile node

  3. Identification Protocol using One-way function • Short term (One-time password) • Long-term Alice Bob 0. Secret key k; 正整數 t Public key pk=ft(k) 1. i 2. wi=fi(k) 3. ft-i(wi)?=pk TTP Prover Verifier 0. secret key k 1. i 2. wi=fi(h(k,N)),N Nonce N 3. N 4. pk=ft(h(k,N)) 5. ft-i(wi)?=pk

  4. Mobile IP Registration Protocol HA MN FA 0. NHA M1={RRQ, NMN, NHA} 1. M1,<M1>K 2. M1,<M1>K Verify NHA,<M1>KM2={RRP,NMN,N’HA} 3. M2,<M2>K 4. M2,<M2>K M: MessageRRQ: MIP Registration RequestRRP: MIP Registration Reply<M>K: Mac value of Msg under key KK: shared secret key between MN and HAN: Nonce ※Problem: *Replay attack - 1 & 3*Man-in-the-middle attack - FA

  5. Mobile IP Authentication Protocol based on Identification Protocol HA CA FA MN AgentAdvertisement Random 0<i<t Adv,i IiMN=fi(h(K,NHA))random 0<s<tM1={RRQ, NMN, NHA} 0. NHA Validate RFAft-i(IiMN)?=pk IsFA=fs(h(KFA,NHA)) random 0<j<t, j≠i pk=ft(h(K,NHA)) 1. M1,s,<M1,s>K,IiMN 2. M1,s,<M1,s>K,j,IsFA Verify NHA,<M1,s>K NHA Mobile IPAuthentication ft-s(IsFA)?=pkFAIjMN=fj(h(K,NHA)M2={RRP,NMN,N’HA} pkFA=ft(h(KFA,NHA)) 3. M2,j,<M2,j>K,IjMN fj-i(IiMN)?=IjMNor fi-j(IjMN)?=IiMN 4. M2,j,<M2,j>K pk=ft(h(K,N’HA))

  6. Comments • MN cannot authenticate FA • HA should record nonce MN FA CA 1.M1,s,<M1,s>K,IiMN,N N Is=fs(h(KFA,N)) It=ft(h(KFA,N)) ft-s(Is)?=It HA MN FA 0.NHA, E(NHA) 1. M1,s,<M1,s>K,IiMN,E(NHA) 2. M1,s,<M1,s>K,j,IsFA , E(NHA)

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