SSL, client certs, and MITM (was WYTM?)

2003-10-22 Thread Tom Otvos
that), are not more people jumping up and down yelling that it is being used incorrectly? Am I missing something obvious here? I look forward to any comments you might have. -- Tom Otvos Don't think you are. Know you are. - Morpheus

RE: SSL, client certs, and MITM (was WYTM?)

2003-10-22 Thread Tom Otvos
So what purpose would client certificates address? Almost all of the use of SSL domain name certs is to hide a credit card number when a consumer is buying something. There is no requirement for the merchant to identify and/or authenticate the client the payment infrastructure

RE: SSL, client certs, and MITM (was WYTM?)

2003-10-22 Thread Tom Otvos
Nobody doubts that it can occur, and that it *can* occur in practice. It is whether it *does* occur that is where the problem lies. Or, whether it gets reported if it does occur. The question is one of costs and benefits - how much should we spend to defend against this attack? How