godzilla crypto tutorial part2a

godzilla crypto tutorial part2a - Digital Signature...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Digital Signature Legislation Why use a hammer to pound a screw when you have a wrench? ji Introduction This is a cross-disciplinary field Few lawyers understand the technical issues Even fewer techies understand the legal issues Greenfields solutions designed by those who understand both tend to look nothing like the expected approach AADS/X9.59 EDI/trading agreement-based approaches IRS 1040 signing Techies have no political authority and try to develop technical solutions to political/social problems Politicians don t understand the technology, and pass vague laws in the hope that the market will sort it out
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Introduction (ctd) It s a very hard problem to solve No consensus on how to do it Typical approach Digital signature law is passed Published commentary on it is usually dissenting opinions Why do we need Dig.Signature Legislation? Existing commerce uses paper-and-ink signatures We need e-commerce We need Digital Signature legislation A horse is a mode of transport A car is a mode of transport A car is a horse Result: Laws requiring people to walk in front of cars waving red flags and firing pistols Signing a mortgage (paper) is very different from an online credit card purchase under MOTO rules (electronic)
Background image of page 2
What is a Signature? A signature establishes validity of a document to allow the reader to act on it as a statement of the signer s intent, and leaves evidence that effect afterwards Signatures represent a physical manifestation of consent A digital signature must provide a similar degree of security A signature is not just authentiction When you sign a document (e.g.cheque), you re making a promise, not authenticating yourself Even when you sign in to a building, you re engaging in ritual, not authenticating yourself What is a Signature? (ctd) Typical signature functions are Associate the signer with a document Prove involvement in the act of signing Provide proof of the signers involvement with the content of the signed document Provide endorsement of authorship Provide endorsement of the contents of a document authored by someone else Prove a person was at a given place at a given time Meet a statutory requirement that a document be signed to make it valid
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What is a Signature? (ctd) A signature isn t necessarily a handwritten signature Stamp Chop-marks Some countries have requirements that contracts for the sale of goods above a certain value be signed to be enforceable. This signature can be A signature in the generally-accepted sense A stamp A typewritten signature Use of company letterhead Real-world vs. Electronic Signatures Real-world paper-and-ink signatures use A standard pen A standard hand/wrist Standard handwriting But The user is aware of the importance of their action
Background image of page 4
Real-world vs. Electronic Signatures (ctd) Different weight is given to the signature depending on
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 40

godzilla crypto tutorial part2a - Digital Signature...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online