Why do we want secure E-mail?
If we don't know what the question is, how do we know that we've found
the answer?
- Faking mail is too simple.
- Listening to mail is too simple.
- Stealing mail is too simple
Security functions we want
- Who sent me mail?
- Is this the mail he sent?
- Did the mail get delivered?
- Can I prove that he got it?
Cost of security
- Expensive software
- Expensive maintenance
- Expensive irritation
Harald.T.Alvestrand@uninett.no
Last modified: Fri Nov 10 13:51:44 1995