Search results for “[subject: security-cryptography-encryption]”

• Author(s): Martin Gardner • Publisher: Dover Publications • Publisher Imprint: Dover Publications • BISAC: Questions & AnswersFrom the Back Cover"A fascinating, challenging book."―A.L.A. BooklistLearn to use the most important codes and met...

• Author(s): Gerald Jenkins • Publisher: Tarquin Group • Publisher Imprint: Tarquin Group • BISAC: Teaching - Subjects - Social ScienceMake this collection of seven ingenious paper gadgets which introduce and explain many of the concepts used in ...

• Author(s): Laurence D. Smith • Publisher: Dover Publications • Publisher Imprint: Dover Publications • BISAC: General"Those who delight in puzzles can find much to ponder here." -- Science News Letter"Will be well received by anyone really inte...

• Author(s): Bud Johnson • Publisher: Dover Publications • Publisher Imprint: Dover Publications • BISAC: GeneralNo, it's not a message from outer space! Just read it backwards, starting from the bottom line, to discover what this specially coded...

• Author(s): Mary-Lane Kamberg | Alberto Jiménez • Publisher: Rosen Central • Publisher Imprint: Rosen Central • BISAC: Computers - Internet & Social MediaInternet security breaches have been in the news of late. Organizations, governments, b...