Transcript DIGITAL SIGNATURES “FROM THE LEGAL TO THE I.T. AND THE INTERNATIONAL

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
Challenges and opportunities
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
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
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
SIGNATURES & THE LAW
The general purposes of signing writings
Evidence
Ceremony
Approval
Efficiency and logistics
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
SIGNATURES & THE LAW
An essential adaptation to the technology
Faster
Cheaper
The required attributes of a signature
Signer authentication
Document authentication
Affirmative act
Efficiency
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
HOW DIGITAL SIGNATURE
TECHNOLOGY WORKS
The asymmetrical cryptosystem (privatepublic) key
The hash function
Digital Signature creation
Digital Signature verification
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
HOW DIGITAL SIGNATURE
TECHNOLOGY WORKS
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
The
Certification
Authority
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
MORE FEATURES:
ENCRYPTED MESSAGES
Document
From the
sender
Encrypted
document
Public
Key
Encrypted
document
Come from a
certification authority
Private
Key
Decrypted
document
To the receiver
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
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
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
COMPARISON OF DIGITAL
AND TRADITIONAL
Disadvantages
Technological compatibility
Security concerns
Legal issues
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
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
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
CHALLENGES AND
OPPORTUNITIES
Reduced paperwork; faster approvals
Banking and
financial services
Health care
Increased velocity of fund transfers
New business opportunities to act as certification
authorities
Support for the many different trading partners that
may be involved in a financial transaction
Automation of claims and payments
Integration with insurance companies and provider
networks
Secure access to patient records
Cost of adoption
Speed with which digital signature technology can
be deployed
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
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
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
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
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
CHALLENGES AND
OPPORTUNITIES
Today’s e-signature players
Ilumin
SignOnline
Litronic
Interlink Electronics
Sooner than later
Jinghua YAN
Remy MAGNIER
12/08/00
Nargiz UMAYEVA
Anthony LI
ANY
QUESTIONS ?
Interlink Electronics
http://www.prism.gatech.edu/~gt6383c