Anonymous Authentication in Group

2001. 9. 11.

Course Title: Network SecurityFaculty : Kwangjo Kim

2001027 Jongseong Kim

2Network Security

1. MOTIVATION

▣ In many parts of crypto applications - internet bidding and auction,

electronic voting, lottery, peer to peer communication,.. – an anonymous

authentication protocol is needed to keep the identity of members secret.

▣ I will present protocol for authenticating a member in a group which is

less computational and faster than existent authentication protocols.

▣ If I finish my work successfully, I’ll get some knowledge about general

cryptography, digital signature, hash function, hash chain and so on.

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2. REQUIREMENT

▣ Essential requirements Security

Anonymity

Unlinkablity

▣ Additional requirements

Management of membership in group

Authentication key management in group

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3. OBJECTIVE

▣ Less Computational protocol

▣ Faster than current protocols

▣ Easy to implementation

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4. APPROACH

▣ Eliminate flaw of group signature

▣ Minimize using the public-key cryptosystem to achieve proper speed

▣ Apply a hash function and hash chain to managing group members

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5.TIME SCHEDULE

Time Table

Work3

th

4

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5

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6

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7

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8

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9

th10th

11th

12th

13th

14th

15th

Survey related

Work

Improve protocol

mid-term

presentation

Complete protocols

Final report

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6. REFERENCES

[1] Menezes, “Handbook of Applied Cryptography”

[2] Dan Boneh, Matt Franklin. “Anonymous Authentication with subset Queries” Proceedings of the 6th ACM conference on Computer and communications security November 1 - 4, 1999, Singapore

[3] Stuart Schechter , Todd Parnell , Alexander Hartemink, “Anonymous authentica- tion of Membership in Dynamic Groups”, Volume 1648, Issue , pp 0184-Lecture Notes in Computer Science

[4] David Chaum , Eugene vanHeyst, ”Group Signatures”,Volume 0547, Issue , pp 0257- lecture Notes in Computer Science

[5] Michel Abdalla , Sara Miner , Chanathip Namprempre, “Forward-Secure Threshold Signature Schemes”,Volume 2020, Issue , pp 0441- Lecture Notes in Computer Science

[6] Michel Abdalla , Sara Miner , Chanathip Namprempre, “Forward-Secure Threshold Signature Schemes”, Volume 2020, Issue , pp 0441-Lecture Notes in Computer Science