Kryptologie: Eine Einführung in Die Wissenschaft Vom Verschlüsseln, Verbergen Und Verheimlichen. Ohne Alle Geheimniskrämerei, Aber Nicht Ohne Hinterli
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Aut prodesse volunt aut delectare poetae aut simul et iucunda et idonea dicere vitae. (Horaz) Solange es mit Sprache begabte Lebewesen gibt, solange gibt es auch schon vertrauliche Mitteilungen, also Mitteilungen, die nur fur eine einzige Person oder nur fur einen ganz begrenzten Personenkreis gedacht sind, und von denen aile ubrigen Personen keine Kenntnis erhalten sollen. Wie kann man eine Nachricht 'sicher' ubermitteln, d.h. so, daB kein Unbefugter Kenntnis vom Inhalt dieser Nachricht erhalt? Eine damit zusammenhangende, fast noch wichtigere Frage ist: Wie kann man erreichen, daB die Nachricht wirklich beim Empfanger ankommt, und zwar genauso, wie man sie losgeschickt hat? Traditionell gibt es zwei M6glichkeiten, diese Probleme zu 16sen: - Einmal kann man die Existenz der Nachricht verheimlichen. Man k6nnte die ver- trauliche Nachricht zum Beispiel mit unsichtbarer Tinte schreiben. - Man kann aber auch die Mitteilung durch eine vertrauenswurdige Person uber- mitteln lassen. Dies haben zu allen Zeiten heimlich Verliebte versucht - und fast aile klassischen Trag6dien zeugen vom letztlichen Scheitern dieser Bemuhungen. Eine ganz andersartige Methode besteht darin, vertrauliche Nachrichten zu ver- schliisseln. In diesem Fall verheimlicht man nicht ihre Existenz. 1m Gegenteil: Man ubermittelt die Nachricht uber einen 'unsicheren Kanal', aber so 'chiffriert', daB niemand - auBer dem wirklichen Empfanger - die Nachricht 'dechiffrieren' kann.
• Author(s): Clear | James • Publisher: Penguin • Publisher Imprint: Penguin Random House • Subject: General Books
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• Author(s): Ichiro Kishimi • Publisher: GROVE ATLANTIC • Publisher Imprint: Allen & Unwin • BISAC: Personal Growth - SuccessIchiro Kishimi lives in Kyoto. He writes, lectures and teaches in psychiatric clinics as a certified counsellor and c...
View full details• Author(s): Chetan Bhagat • Publisher: HarperCollins Publishers India • Publisher Imprint: HarperCollins Publishers India • BISAC: GeneralFrom India's top-selling writer Chetan Bhagat comes a powerful new love story that will make you laugh, cry...
View full details• Author(s): Brianna Wiest • Publisher: Manjul Publishing • Publisher Imprint: Amaryllis • BISAC: Body Mind And SpiritThis is a book about self-sabotage. Why we do it, when we do it, and how to stop doing it—for good. Coexisting but conflicting n...
View full details• Author(s): Morgan Housel • Publisher: Pan Macmillan • Publisher Imprint: Pan Macmillan • BISAC: Finance - Wealth ManagementA third book from the International bestselling author of The Psychology of Money and Same as Ever, lessons on harnessing...
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View full details• Author(s): Acharya Prashant • Publisher: HarperCollins Publishers India • Publisher Imprint: HarperCollins Publishers India • BISAC: GeneralIn a world where vagueness is mistaken for depth and obscurity passes for wisdom, Truth without Apology ...
View full details• Author(s): Sudha Murthy • Publisher: India Puffin • Publisher Imprint: India Puffin • BISAC: Short StoriesWho can resist a good story, especially when it's being told by Grandma? From her bag emerges tales of kings and cheats, monkeys and mic...
View full details• Author(s): Satoshi Yagisawa • Publisher: Bonnier Books Ltd • Publisher Imprint: Bonnier Books Ltd
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View full details• Author(s): Dan Brown • Publisher: Transworld Publishers Ltd • Publisher Imprint: Transworld Publishers Ltd • BISAC: Thrillers - EspionageDan Brown is the bestselling author of Digital Fortress, Deception Point, Angels and Demons, The Da Vinci C...
View full details• Author(s): Sudha Murty • Publisher: India Puffin • Publisher Imprint: India Puffin • BISAC: Action & Adventure - General
Rich Dad Poor Dad: What the Rich Teach Their Kids about Money That the Poor and Middle Class Do Not!
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View full details• Author(s): Dale Carnegie | Napoleon Hill • Publisher: Fingerprint • Publisher Imprint: Fingerprint • Subject: General Books
• Author(s): Freida Mcfadden • Publisher: Penguin Select Print • Publisher Imprint: Penguin Select Publishing"Multi-Million Copy Bestselling Series •Now Being Made Into a Major Motion Picture Starring Sydney Sweeney and Amanda Seyfried #1 New Yor...
View full details• Author(s): Wonder House Books • Publisher: Wonder House Books • Publisher Imprint: Wonder House Books • BISAC: Comics & Graphic Novels - Fairy Tales, Folklore, Legends & MTimeless Wisdom, Talking Animals & Life Lessons for Young Min...
View full details• Author(s): Viktor E. Frankl • Publisher: Random House • Publisher Imprint: Random Hou • Subject: Medical, Nursing and Health Sciences
• Author(s): Madhavi Bharadwaj • Publisher: PRH India • Publisher Imprint: Penguin Ebury Press • BISAC: Parenting - MotherhoodWelcome to the wild, messy, wonderful world of parenting--where the nights are long, the diapers are explosive, and unso...
View full details• Author(s): Vir Das • Publisher: HarperCollins Publishers India • Publisher Imprint: HarperCollins Publishers India • BISAC: Entertainment & Performing ArtsComedian and actor Vir Das is beloved (by some, tolerated by others, blocked by a few...
View full details• Author(s): Eric Carle • Publisher: Penguin Books, Limited (UK) • Publisher Imprint: Penguin Books, Limited (UK) • BISAC: Animals - Butterflies, Moths & CaterpillarsEric Carle's The Very Hungry Caterpillar is a perennial favourite with child...
View full details• Author(s): Prajakta Koli • Publisher: Harper Fiction India • Publisher Imprint: Harper Fiction India • BISAC: Romance - ContemporaryWinner of the Amazon India Popular Choice Debut Book 2025 Award. From one of India's most-loved creators comes s...
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