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A Secure Remote User Authentication Scheme with Smart Cards

A Secure Remote User Authentication Scheme with Smart Cards. Manoj Kumar http://eprint.iacr.org/2008/331,2008 報告者 : 許睿 中 日期 :11.23. Outline. Introduction Notations Scheme Conclusions. Introduction. Register phase. USER. SERVER. Login phase. SERVER. USER. Authentication phase.

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A Secure Remote User Authentication Scheme with Smart Cards

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  1. A Secure Remote User Authentication Scheme with Smart Cards ManojKumar http://eprint.iacr.org/2008/331,2008 報告者:許睿中 日期:11.23

  2. Outline • Introduction • Notations • Scheme • Conclusions

  3. Introduction Register phase USER SERVER Login phase SERVER USER Authentication phase

  4. Introduction • The point of vulnerabilities in a remote user authentication scheme: • Security vulnerabilities due to remote user • Security vulnerabilities due to remote server • Security vulnerabilities due to insecure channel • To solve these vulnerabilities: • mutual authentication • Secure session key generation

  5. Outline • Introduction • Notations • Scheme • Conclusions

  6. Notations

  7. Outline • Introduction • Notations • Schema • Conclusions

  8. Scheme • The Register phase • The Login phase • The Verification phase • The Password change phase

  9. The Register phase U S

  10. The Login phase U S

  11. The Verification phase S U

  12. The Verification phase U S

  13. The Password change phase U S

  14. Outline • Introduction • Notations • Scheme • Conclusions

  15. Conclusions • This scheme not only provides mutual authentication between the user and server , but also establishes a common session key to provide message confidentiality. • In the password change phase of the propose protocol , each user can change his password without connect to any server.

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