dan boneh introduction what is cryptography? online cryptography course dan boneh

Dan Boneh Introduction What is cryptography? Online Cryptography Course Dan Boneh

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Dan Boneh

Introduction

What is cryptography?

Online Cryptography Course Dan Boneh

Dan Boneh

Crypto core

Secret key establishment:

Secure communication:

attacker???

k k

confidentiality and integrity

AliceBob

Talking to Alice

Talking to Bob

Dan Boneh

But crypto can do much more• Digital signatures

• Anonymous communicationAlice

signature

Alice

Who did I just talk to?

Bob

Dan Boneh

Alice

But crypto can do much more• Digital signatures

• Anonymous communication

• Anonymous digital cash– Can I spend a “digital coin” without anyone knowing who I am?– How to prevent double spending?

Who was that?Internet

1$(anon. comm.)

Dan Boneh

Protocols• Elections• Private auctions

Dan Boneh

Protocols• Elections• Private auctions

• Secure multi-party computation

Goal: compute f(x1, x2, x3, x4)

“Thm:” anything the can done with trusted auth. can also be done without

trustedauthority

Dan Boneh

Crypto magic• Privately outsourcing computation

• Zero knowledge (proof of knowledge)

Alice

searchquery

What did she search for?

results

I know the factors of N !!

proof π

???

E[ query ]

E[ results ]

AliceN=p q∙Bob

Dan Boneh

A rigorous scienceThe three steps in cryptography:

• Precisely specify threat model

• Propose a construction

• Prove that breaking construction under threat mode will solve an underlying hard problem

Dan Boneh

End of Segment

Dan Boneh Introduction History Online Cryptography Course Dan Boneh

Cryptography - Stanford University · 1 Cryptography, briefly John Mitchell 802.11b slides from Dan Boneh Cryptography uIs •Tremendous tool •Basis for many security mechanisms

Dan Boneh Odds and ends Tweakable encryption Online Cryptography Course Dan Boneh

Dan Boneh Stream ciphers PRG Security Defs Online Cryptography Course Dan Boneh

Dan Boneh Block ciphers The data encryption standard (DES) Online Cryptography Course Dan Boneh

Collision$resistance$ Introduc3on$ - Stanford Universitydabo/courses/Online... · Dan$Boneh$ Collision$resistance$ Introduc3on$ Online$Cryptography$Course$ $ $ $ $ $ $ $ $ $ $ $ $

The One Time Pad - Stanford Universitydabo/courses/OnlineCrypto/slides/02... · Dan Boneh Stream ciphers The One Time Pad Online Cryptography Course Dan Boneh . Dan Boneh Symmetric

Cryptography Overview - University of Waterloovganesh/TEACHING/W2013/ECE458/Lecture-8.pdf · Cryptography Overview Dan Boneh (Modified by Vijay Ganesh) ECE458 Winter 2013 Cryptography:

Gustav Rydstedt, Elie Burzstein, Dan Boneh, Collin Jackson

Dan Boneh Authenticated Encryption Active attacks on CPA-secure encryption Online Cryptography Course Dan Boneh

Symmetric Cryptography · Symmetric Cryptography Thanks to Dan Boneh, Dieter Gollmann, Dan Halperin, John Manferdelli, John Mitchell, ... (Simplified) Block of plaintext S S S S S

Eran Tromer Slides credit: Dan Boneh , Stanford course CS155, 2010

Cryptography - Security Proof of Boneh-Franklin IBE Security Proof of Boneh-Franklin IBE Jean-Sébastien Coron Université du Luxembourg June 6, 2014 Jean-SébastienCoron Cryptography

Instructor: Dan Boneh, Arthur Gervais, Andrew Miller

Software Security Continued + Cryptography Intro...Cryptography Intro Autumn 2018 Tadayoshi (Yoshi) Kohno [email protected] Thanks to Dan Boneh, Dieter Gollmann, Dan Halperin,

1 Denial of Service Attacks Adapted from Dan Boneh, Stanford

Cryptography Overview - University of Waterloovganesh/TEACHING/S2014... · Cryptography Overview Dan Boneh (Modified by Vijay Ganesh) ECE458 Winter 2013. Cryptography: Today’s Lecture

Lending and Borrowing Instructors: Dan Boneh, Arthur

Dan Boneh CS155 Computer Security. Dan Boneh The computer security problem Two factors: Lots of buggy software (and gullible users) Money can be made

Flipped Classroom - Cryptography I - Dan Boneh

Eran Tromer Slides credit: Dan Boneh, Yuval Ishai

The RSA Cryptosystem Dan Boneh Stanford University

TCG: Trusted Computing Group CS 155 Spring 2007 Dan Boneh

Dan Boneh Introduction Course Overview Online Cryptography Course Dan Boneh

Dan Boneh Stream ciphers Attacks on OTP and stream ciphers Online Cryptography Course Dan Boneh

Dan Boneh Intro. Number Theory Notation Online Cryptography Course Dan Boneh

Blockciphers - Applied Cryptography Group | Stanford ...dabo/courses/OnlineCrypto/slides/03-block... · Dan$Boneh$ Block$ciphers:$$crypto$work$horse$ E, D CT Block n bits PT Block

Dan Boneh Isolation The confinement principle CS155: Computer Security

Using block ciphers - d1b10bmlvqabco.cloudfront.net · Dan Boneh Using block ciphers 18733: Applied Cryptography Anupam Datta (CMU) Dan Boneh Using block ciphers Review: PRPs and

Computer Security Dan Boneh and John Mitchell CS 155Spring 2008

Odds$and$ends$ - Stanford Universitydabo/courses/Online... · Dan$Boneh$ Odds$and$ends$ Key$Derivaon$ Online$Cryptography$Course$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $

The One Time Pad - Amazon Web Servicesspark-university.s3.amazonaws.com/stanford-crypto/slides/02-stream... · Dan Boneh Stream ciphers The One Time Pad Online Cryptography Course

Trusted$3 $par7es$ - Stanford Universitydabo/courses/OnlineCrypto/... · 2017-01-09 · Dan$Boneh$ Basic$key$exchange$ Trusted$3rd$par7es$ Online$Cryptography$Course$ $ $ $ $ $ $

DeFi Security Instructors: Dan Boneh, Arthur Gervais

Dan Boneh Stream ciphers The One Time Pad Online Cryptography Course Dan Boneh

dan boneh introduction what is cryptography? online cryptography course dan boneh

Documents

dan boneh alice

dan boneh introduction

bob slide

dan boneh crypto magic

dan boneh end of segment

pq bob n slide

e query e results alice

underlying hard problem