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DIGITAL SIGNATURES

DIGITAL SIGNATURES. “FROM THE LEGAL TO THE I.T. AND THE INTERNATIONAL FIELD”. Jinghua YAN Nargiz UMAYEVA Anthony LI Remy MAGNIER. AGENDA. Computer security field vs. legal field Signature and the law How digital signature technology works Comparison of digital vs. traditional signatures

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DIGITAL SIGNATURES

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  1. DIGITAL SIGNATURES “FROM THE LEGAL TO THE I.T. AND THE INTERNATIONAL FIELD” Jinghua YAN Nargiz UMAYEVA Anthony LI Remy MAGNIER

  2. AGENDA • Computer security field vs. legal field • Signature and the law • How digital signature technology works • Comparison of digital vs. traditional signatures • Challenges and opportunities

  3. COMPUTER SECURITY VS. LEGAL FIELD • The need for digital signature today • IT versus legal concept • An effective digital signature is a combination of both fields • Electronic and digital signature

  4. SIGNATURES & THE LAW • The general purposes of signing writings • Evidence • Ceremony • Approval • Efficiency and logistics

  5. SIGNATURES & THE LAW • An essential adaptation to the technology • Faster • Cheaper • The required attributes of a signature • Signer authentication • Document authentication • Affirmative act • Efficiency

  6. HOW DIGITAL SIGNATURE TECHNOLOGY WORKS • The asymmetrical cryptosystem (private-public) key • The hash function • Digital Signature creation • Digital Signature verification

  7. HOW DIGITAL SIGNATURE TECHNOLOGY WORKS

  8. The Certification Authority

  9. MORE FEATURES: ENCRYPTED MESSAGES Public Key Document Encrypted document From the sender Come from a certification authority Private Key Encrypted document Decrypted document To the receiver

  10. COMPARISON OF DIGITAL AND TRADITIONAL • Advantages • Data integrity • Signer authentication • Message authentication • Non-repudiation • Time stamp is critical • Increase the speed of transactions • Confidentiality through encryption

  11. COMPARISON OF DIGITAL AND TRADITIONAL • Disadvantages • Technological compatibility • Security concerns • Legal issues

  12. CHALLENGES AND OPPORTUNITIES • Public key certificates • Who is represented by the key pair? • The need of a third party • Impact on the business world • Performance • Costs

  13. Banking and financial services Health care Reduced paperwork; faster approvals Automation of claims and payments Increased velocity of fund transfers Integration with insurance companies and provider networks New business opportunities to act as certification authorities Secure access to patient records Support for the many different trading partners that may be involved in a financial transaction Cost of adoption Speed with which digital signature technology can be deployed CHALLENGES AND OPPORTUNITIES

  14. CHALLENGES AND OPPORTUNITIES • International Overview • US: Federal vs. State • Asia: digital signature is driven by the commercial sector, still a multi-tier development • Europe: EU directive as a starting point

  15. CHALLENGES AND OPPORTUNITIES • The cost of digital signatures • Institutional overhead • Subscriber and relying party Costs • The promising solutions • Imposters • Message integrity • Formal legal requirements • Open systems

  16. CHALLENGES AND OPPORTUNITIES • Today’s e-signature players • Ilumin • SignOnline • Litronic • Interlink Electronics • Sooner than later

  17. ANYQUESTIONS ? Interlink Electronics http://www.prism.gatech.edu/~gt6383c

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