On Aug 22, 11:02pm, hfinney@shell.portal.com wrote:
Subject: Attacks on remailers
Please pardon the previous mail. My new mailer's "send" button jumped into the path of my mouse and got run down. -------------------------------------------------- The best protection against traffic analysis I've seen is to make sure that there is no information available from the traffic content, timing or volume. The first can be done by encrypting all header information, as well as message contents. Thanks to public-key, we have a chance to do that. The others can be handled by making sure that the traffic timing and volume are constant. The luxurious way to do this is by keeping a continuous traffic stream going. We could do this more economically by sending daily messages (same time(s) each day) of constant length -- both between each of us and each remailer and between the remailers. This limits the maximum bandwidth per person but clobbers traffic analysis. - Carl