Tech Decrypted

                        Taking the mystery out of learning cryptography

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You are probably here... 

...to get our free cryptography book because you want or need to learn the basics of computer cryptography. 

A few years ago Hx needed to design cryptography into a computer system. Since he couldn't find a book from which to quickly learn the basics, he drew pictures to teach himself the key concepts. 

Cryptography Decrypted readers on Amazon  say Hx and Doris' pictures and text have taken the mystery out of learning cryptography - a tool  to help protect the web and everyone's personal information.




(c) H. X. Mel & Doris Baker

We are grateful to our publisher, Addison-Wesley of Pearson Education Corp, for giving us permission to post our book to our web site. They request we include the following copyright notice:
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form, or by any means electronic, mechanical, photocopying, recording, or otherwise, without prior consent of the publisher (Pearson Education 617 848 7047).