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Prototype Remote E-Voting System

Prototype Remote E-Voting System. Scope of this presentation. Brief introduction to E-voting Feasibility of the system Design patterns/ E-voting protocols Security technology Operation of prototype system Conclusions. E-Voting and Remote E-voting. E-voting brings automation to voting

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Prototype Remote E-Voting System

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  1. Prototype Remote E-Voting System

  2. Scope of this presentation • Brief introduction to E-voting • Feasibility of the system • Design patterns/ E-voting protocols • Security technology • Operation of prototype system • Conclusions

  3. E-Voting and Remote E-voting E-voting brings automation to voting • electronic ballot counting machine • voting kiosks at polling stations Remote E-voting A system that allows voters to vote from outside a polling station via an electronics device • PC attached to the internet • mobile phone with WAP

  4. Feasibility of the system • Digital divide • Verifiability • Non voter evidence • Attacks • Authentication • Privacy • Anonymity

  5. Design Patterns/E-voting protocols • I implemented a “type 2” e-voting system, this design allows authentication, anonymity and privacy through the use of two servers and Public Key Infrastructure (PKI). • I structured my communication around a “secure channel” design pattern, the only real advantage of this design pattern was that it made the code a lot easier to understand and modify

  6. Security technology (PKI) • Public Key Infrastructure (PKI) • Asymmetric • Public and Private keys • Public Key Encryption (Privacy) • Digital Signature (Authentication) • I used RSA encryption build into Microsoft.NET framework class library (FCL)

  7. Security technology (OTP) • One Time Pad • Symmetric • One key, same size as message, totally random • I built an OTP object using a random number generator that is build into the the .NET FCL

  8. Operation of the prototype system VoterID Vote BOB 123 Primary Guard Secondary Guard

  9. Bob encrypts vote (OTP) BOB X Primary Guard Secondary Guard

  10. Bob establishes secure channel with primary guard (RSA) A X Primary Guard Secondary Guard

  11. Primary guard verifies Bob is a valid voter Primary Guard BOB Secondary Guard X A = BOB

  12. Primary guard digitally signs encrypted vote Primary Guard Secondary Guard SX A = BOB SX = X

  13. Bob verifies digital signature SX = X SX Primary Guard Secondary Guard A = BOB SX = X

  14. Bob establishes a secure channel with secondary guard BSX Primary Guard Secondary Guard A = BOB SX = X

  15. Secondary guard verifies digital signature Primary Guard Secondary Guard SX A = BOB SX = X BSX = SX = X

  16. Secondary guard decrypts the vote Primary Guard Secondary Guard X A = BOB SX = X BSX = SX = X = 123

  17. The vote is counted and Bob has voted Primary Guard Secondary Guard A = BOB X = 123

  18. Authentication, Anonymity and Privacy • Public key encryption provides privacy • Voter ID and Digital signatures provide authentication • The two servers do not line the votes up with the voter. So anonymity is provided

  19. Conclusions • Covered some of the technical issues facing any remote e-voting system • E-voting does have a future • Without change in the law no e-voting system can satisfy every essential requirement. • Remote e-voting could be the worst or best thing to happen to democracy ever.

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