<TODO: Finalize with the team>
Definitions:
eSign, also known as eSignature or an electronic signature, is a way of signing documents digitally, without needing to print them. It’s sort of like an electronic version of a pen and paper signature or stamp, specific to a person or organization and is both secure and legally binding.
In our context, eSign will mean cryptographically validatable signatures.
Objective:
<TODO: update after discussion with the team during kickoff>
The ability for anyone to sign
Use ID BB to authorize and sign a document.
Auditability
Validatable
Revoke signatures.
Highly secure.
Preservation of esignature
Assumptions:
Has an ekyc or authentication service.
Bulk signing is out of scope.
Collaboration in the signature is limited by the type of the document and the support of the document.
Challenges:
Central service vs Distributed model
What if there is no eKyc/auth available?
Phone-based signature?
Key principles:
Flow:
Sign using a cryptographic key and explain
How do we verify? explain here
How can we make it easy for everyone in the country to use it?
Kassy - preservation means the ability to use a digital signature and validate the same digital signature
Let us add one or some of the sample digital signatures.
https://tcab.eu/eidas-assessment/seal-preservation/
Sample Use cases:
Kassy use cases
Local signature - Cryptographic token
Distance signature - sign your own
Before you get a key you should get the kyc by the certificate authority.
Gtax generates key and certificate to sign and then returns the application.
- kassy - please update the use cases that you are aware of.
- kassy - please share the links of the egianture services available in your country.
- sasi - update india esign details.
- muttalib - pls update more on this https://legalseba.com/digital-signature-in-bangladesh/