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Regarding Bruen's Review of *Disappearing Cryptography*

To the Editor:
I would like to thank Bob Bruen and CIPHER for reviewing my book
*Disappearing Cryptography*. Hiding information is an important
technique that can have many practical applications and I hope
my book will help people understand the topic.

One point needs to be clarified. The primary reason my publisher
and I chose the title "Disappearing Cryptography" is most people
with a background in computer science don't know what
"steganography" means.

But I also incorporate the word "cryptography" to make a larger
point. Some of the algorithms I present are not just "security
through obscurity." There are plenty of theoretical and
practical reasons why some of the algorithms can present
hard-to-break security as well as obscurity. The algorithms
aren't just mathematical equivalents to microdots and hidden
compartments, they can be mathematical safes as well.

While it is hard to ever offer any guarantees of cryptographic
strength, I think that many of the algorithms could prove to be
quite secure over time. There are some preliminary theoretical
indications that suggest they could very strong. Of course,
theory is not the same as practice and I could easily be proven
wrong. Widespread study is the only practical measure of
cryptographic strength and I hope my book will make these
subjects interesting to a number of researchers.

Thank you again.

-Peter Wayner

(pcw@access.digex.net)