Disappearing Cryptography: Information Hiding: Steganography & Watermarking, Second Edition
This resource provides a detailed overview of the act of information hiding and the techniques used to do so.
TABLE OF CONTENTS Disappearing Cryptography: Information Hiding: Steganography & Watermarking, Second Edition
Chapter 11: Secret Broadcasts
Table Talk
| Chris: | I heard that Bobby got fired. |
| Leslie: | Fired? |
| Pat: | I heard he was let go because of a drop in sales. |
| Chris: | Yes, the sales he's supposed to be making. |
| Leslie: | But everyone's sales are down. |
| Pat: | He said he was having a good quarter. |
| Chris: | Good? His sales are down even more. |
| Leslie: | Down more than what? |
| Pat: | Maybe they're just down relative to last year, which was a good year for everyone. |
| Chris: | I think they're down relative to everyone else. |
| Leslie: | Maybe it was something else. I heard he was drinking too much. |
| Pat: | I heard because he couldn't take his boss's stupidity. |
| Chris: | Actually, his boss is brilliant. Bobby's the problem. |
| Leslie: | This doesn't add up. |
| Pat: | Well, it does add up. Maybe the truth is somewhere in between everything we've said. You just need to add it together. |
11.1 Secret Senders
How can you broadcast a message so everyone can read it, but no one can know where it is coming from? Radio broadcasts can easily be located with simple directional antennae. Anonymous remailers (see Chapter 10) can cut off the path back to the message's source, but they can often be compromised or traced. Practically any message on the Net can be traced because packets always flow from one place to another. This is generally completely impractical, but it is still possible.
None of these methods offers unconditional security, but there is one class of algorithms created by David Chaum that...
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