The Security of Quantum Cryptography

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The Security of Quantum Cryptography
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Vasil Penchev, Assoc. Prof., PhD
vasildinev_at_gmail.com
http//www.
esnips.com/web/vasilpenchevsnews

• Institute for Philosophical Research,
• Bulgarian Academy of Science

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My story has three heroes
This is Alice
Alice has a message to Bob
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And here is Bob
He's looking forward
to Alice's message!
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But this is Eve!
She's eavesdropping!
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Both Alice and Bob
know that Eve's
eavesdropping them!
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"I love you!"
This is Alice's secret message
But Eve mustn't know!
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"I love you!"
Eve not to understand,
Alice encripts her message
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"I love you!"
For encrypting
Alice uses a chipher
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Her cipher is
a "one-time pad"
Each message is encrypted differently
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The inventors of BB84 QKD protocol
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Charles H. Bennett

• an IBM Fellow at IBM Research

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Gilles Brassard

• Founding Director, Institut transdiscip-linaire
  dinformatique quantique (INTRIQ)Canada Research
  Chair in Quantum Information processingUniversité
  de Montréal

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A better approach pioneered by Paul Townsend
University of Cambridge
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A better approach pioneered by Paul Townsend
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Quantum Love Story by Charles H. Bennett

• (based on the classic tale of Pyramus and Thysbe)

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Artur Ekert

• Leigh Trapnell
• Professor of Quantum
• Physics, DAMTP,
• University of Cam-
• Bridge, Fellow of
• King's College

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QKD on the market
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For encrypting
Alice has used a QKD chipher
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Now Bob knows

Alice
LOVES
him
Eve knows nothing
Alice knows Bob knows
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All are happy!!!
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HAPPY END!
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Long Live Quantum Cryptography!
Turning Ends into Happy Ones!
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Thank You for Your attention!
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Vasil Penchev

vasildinev_at_gmail.com
http//vasil7penchev.
wordpress.com