Lee Chew

1
Using Social Attestations with

• Lee Chew
• Maryam Fazel-Zarandi

2
MOTIVATION

• people want to share different parts of their
  calendars with different social networks
• current web applications lack good support for
  this feature

3
DESIGN GOALS

• modifications should be integrated as seamlessly
  as possible.
• use social attestations

4
SYSTEM ARCHITECTURE
View-Client
Service Server
Publish-Client
DB
Web Browser
Web Browser
Publishers Computer
Viewers Computer
Services Computer
5
PUBLISHER SIDE
What, where, when, etc.
Publish-Client
Service Server
Who can view
Who can view
DB
6
PUBLISHER SIDE
What, where, when, etc.
Publish-Client
Service Server
Who can view
Who can view
DB
7
VIEWER SIDE
View-Client
Service Server
Upload social attestations
6
8
VIEWER SIDE
View-Client
Service Server
Send Calendar Request (target account,
calendar, public key)
6
9
VIEWER SIDE
View-Client
Service Server
Send challenge
6
10
VIEWER SIDE
View-Client
Service Server
Send challenge response
6
11
VIEWER SIDE
View-Client
Service Server

• Find all the social attestations issued by target
  account to the viewer

• Query the DB for all events viewable by viewer

6
12
VIEWER SIDE
View-Client
Service Server
Add viewable events to specified calendar
6
13
FUTURE WORK

• evaluate system (e.g., latency, scaling)
• dynamic content (e.g., calendar feeds)
• simplify the viewer interface

14
CONCLUSIONS

• designed a calendar system that allows for
  fine-grained sharing using social attestations
• implemented the system using a GreaseMonkey
  script, Firefox extension and an Apache server