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8.7 Summary of Distributed Computer Security

8.7 Summary of Distributed Computer Security. Haidong Xue. Content. Part One: Review of the Knowledge in Textbook goals, issues, solutions Part Two: Current Application X509.V3 Part Three: Future Work. Part One: Review of the Knowledge in Textbook. g oals Issues solutions.

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8.7 Summary of Distributed Computer Security

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  1. 8.7 Summary of Distributed Computer Security HaidongXue

  2. Content • Part One: Review of the Knowledge in Textbook goals, issues, solutions • Part Two: Current Application X509.V3 • Part Three: Future Work

  3. Part One: Review of the Knowledge in Textbook goals Issues solutions

  4. Review of the Knowledge in Textbook Goals: • Secrecy • Integrity • Availability • Reliability • Safety

  5. Review of the Knowledge in Textbook Issues: • Access authorization discretionary access control mandatory access control • Message Security cryptography • Mutual Authentication cryptography

  6. Review of the Knowledge in Textbook Cryptography: private key system public key system protocol: Kerberos, X.509

  7. Review of the Knowledge in Textbook DES RSA MD5

  8. Part Two: Current Application X.509 V3

  9. Part Two: Current Application • Certificate • Version • Serial Number • Signature Algorithm • Issuer • Validity Subject • Subject Public Key Info • Public Key Algorithm • Subject Public Key • Issuer Unique Identifier (Optional) • Subject Unique Identifier (Optional) • Extensions (Optional) • Certificate Signature Algorithm • Certificate Signature (http://en.wikipedia.org/wiki/X.509)

  10. Part Two: Current Application 1. A = RSA(Information, Kb-public) 2. B = RSA(A, Kc-private) 3. Send A,B Bank Kb-private Kc-public Customer Kc-private Kb-public

  11. Part Two: Current Application 1.Signature: (1). A = MD5(information) (2). B = RSA(A, Kc-private) 2. Encrypt: (1). Generate 128bits DES Key (2). C = DES(information, K-des) (3). D = RSA(K-des, Kb-public) 3. Send B, C, D Bank Kb-private Kc-public Customer Kc-private Kb-public

  12. Part Two: Current Application Certificate Authority: Kca-private Kb-public RSA( MD5(Kb-public), Kca-private) Bank Kb-private Kc-public Customer Kc-private Kb-public Kca-public

  13. Part Three: Future Work A new kind of private key

  14. Reference • Randy Chow, Theodore Johnson. Distributed Operating Systems& Algorithms. Addison Wesley, 1997 • X.509. http://en.wikipedia.org/wiki/X.509 • Public key certificate. http://en.wikipedia.org/wiki/Digital_Certificate • Introduction to the digital certificates. http://hi.baidu.com/chenxu321/blog/item/783d100834aa50d862d986ca.html • Principles of digital certificates. http://blog.csdn.net/liukeforever/archive/2009/07/31/4396521.aspx

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