2007

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Security Analysis of a Nonce-Based User Authentication Scheme Using Smart Cards Authors: Junghyun NAM, Seungjoo KIM, Sangjoon PARK, Dongho WON1 IEICE TRANSCATIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E90-A No.1 pp.299-302, 2007 授課教師：張克章教授報告者： M9644008 詹世民

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summary ,[object Object],[object Object]

Introduction(1/3) ,[object Object],[object Object]

Introduction(2/3) ,[object Object],[object Object],[object Object],[object Object]

Introduction(3/3) ,[object Object],[object Object],[object Object]

Lee et al.’s Authentication Scheme(1/5) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Lee et al.’s Authentication Scheme(2/5) ,[object Object],U i AS x be the secret key of the authentication server h be a secure one-way hash function. A user submits his identity ID i and password PW i to the Server for registration via a secure channel.

Lee et al.’s Authentication Scheme(3/5) ,[object Object],U i User inserts his smart card into a card reader and enters his identity ID i and password PW i . Given ID i and PW i , the smart card choose a random number N i and computes. AS

Lee et al.’s Authentication Scheme(4/5) ,[object Object],? ? If correct, AS accepts the login request; otherwise, AS reject it. If the verification fails, U i aborts the protocol. U i AS

Lee et al.’s Authentication Scheme(5/5) ,[object Object],[object Object],[object Object]

Weakness in Lee et al.’s Scheme(1/5) ,[object Object],[object Object]

Weakness in Lee et al.’s Scheme(2/5) ,[object Object],AS E AS Original session Parallel session V s ’ is equal

Weakness in Lee et al.’s Scheme(3/5) ,[object Object],AS E launches the attack by choosing a random number C E AS chooses a random number N s , computes the values. E

Weakness in Lee et al.’s Scheme(4/5) ,[object Object],E AS AS chooses a random number N s ’, computes

Weakness in Lee et al.’s Scheme(5/5) ,[object Object],[object Object],[object Object]

Security Enhancement(1/2) ,[object Object]

Security Enhancement(2/2) ,[object Object],[object Object],[object Object]

Conclusion ,[object Object],[object Object]

References(1/3) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

References(2/3) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

References(3/3) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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A Elliptic curve cryptosystem are become popular because of the reduced number of keys bits required in Comparision to other cryptosystem. In existing work ECC technique are used to describe the encryption data to provide a security over a network. ECC satisfy the Smart cards requirements in term of memory, processing and cost. In existing work ECC cryptographic Algorithm work with a smart card technique. Many existing approaches work with smart card with various Technique and produce a better efficient result. In these review paper, we Define a smart card technique using a ECIES cryptographic algorithm. So These Technique key management using smart card and ECIES.ECC basically based on a discrete logarithm over appoint on an elliptic curve. The ECIES is standard elliptic curve that is totally based on encryption algorithm. Smart Card using ECIES technique in key management technique.

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2007

1. Security Analysis of a Nonce-Based User Authentication Scheme Using Smart Cards Authors: Junghyun NAM, Seungjoo KIM, Sangjoon PARK, Dongho WON1 IEICE TRANSCATIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E90-A No.1 pp.299-302, 2007 授課教師：張克章教授報告者： M9644008 詹世民

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Editor's Notes

The Institute of Electronics, Information and Communication Engineers. Nonce ：其實就是亂數，與亂數的區在於其定義此亂數值僅只能被使用過一次，每次使用的亂數不會出現重覆的情況。優點：可以避免重送攻擊，且解決系統時間同步的問題。缺點：遠端伺服器內須儲存相關資訊的資料表，用以記錄曾經使用過的 nonce 值，才可確保傳送過來的認證資訊確實有進行更新。