Items of Interest(?)
¨ Key ideas:
Most info in a CM system is “frozen” (never modified)
Really, only “branches” and “projects” need to be
mutable
Name frozen stuff with cryptographic hash
Name modifiable stuff with Swiss numbers
Use crypto for authentication, access control
¨ Exploration of interaction between crypto
capabilities and wide-area replication
600.436 High-
Assurance Systems
Fall 01/PCMS Exercise
3