A genral and powerful method of makeing sure that Headders, Bodys and Signatures match is to use cyrpto-checksums. For example in NetNews I proposed changing the MessageId: headder such that part of the gobldyguk on the left side of the atsign was a crypto hash of the body of the message and some of the important sending host generated headders. With this system of MessageId:'s anyone who corrupts a message (intentionaly or otherwise) creates a bogus message, as the next machine that gets the message can see that the message does not match it MessageId: line. So, if we design the signature system right (with a field for a crypto hash, or some sort of secondarys signatures to in efect counter sign various includes such as the plain text) a plain text message can be signed in such a way that you can be sure that the text is the right text and none other. This can be sent over the airwaves as it is not hideing information but proveing that it is the right information! Systems like this would be *very* usefull right now, are simple to do (with good advice from Crypto Math types) and usefull to everybody. ||ugh