ACL and Ajanta Security Model

• Access Control List

- read(r), write(w), inherit(i)

- recursive inheritance from parent

- sample .acl entry

< d4 ri urn:ans:fourier.cs.umn.edu/rsingh >

< f4 rw urn:ans:fourier.cs.umn.edu/rsingh >

d1

d4

d2

d3

f1

f2

f4

f3

f5

f6

.acl

root

f4

d4

• Agent’s credentials and ATP transfer protocol

- ATPRequest, ATPReply, ATPAck

- ATPHandler, ATPListner

- DDEntry, verified field

• Ajanta Security Manager

- signed by owner/creator, ACL

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