17 Dec
2003
17 Dec
'03
11:17 p.m.
Sounds like you are describing something which is a variant of an interlock protocol. The idea of an interlock protocol is that you send out first a hash of what you are intending to publish. The MITM has a problem in deciding what to publish, because they have to publish _a_ hash, but they don't know what it should be of. Adam