Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key. Throughout the course participants will be exposed to many exciting open problems in the field and work on fun (optional) programming projects. In a second course (Crypto II) we will cover more advanced cryptographic tasks such as zero-knowledge, privacy mechanisms, and other forms of encryption.
Criptografia I
4.8
(2,560 classificações)
206,051 já inscritos!
oferecido por
Universidade de Stanford
Informações sobre o curso
126,400
126,400Habilidades que você terá
CryptographyCryptographic AttacksPublic-Key CryptographySymmetric-Key Algorithm
Programa - O que você aprenderá com este curso
Semana
14 horas para concluir
Course overview and stream ciphers
Week 1. This week's topic is an overview of what cryptography is about as well as our first example ciphers. You will learn about pseudo-randomness and how to use it for encryption. We will also look at a few basic definitions of secure encryption.
12 vídeos (total de (Total 210 mín.) min), 2 leituras, 2 testes
12 videos
Course Overview10min
What is Cryptography?15min
History of Cryptography18min
Discrete Probability (Crash Course)18min
Discrete Probability (Crash Course, Cont.)13min
Information Theoretic Security and The One Time Pad18min
Stream Ciphers and Pseudo Random Generators19min
Attacks on Stream Ciphers and The One Time Pad23min
Real-World Stream Ciphers19min
PRG Security Definitions24min
Semantic Security15min
Stream Ciphers are Semantically Secure [optional]10min
2 leituras
Lecture slides for all six weeks10min
Course overview and additional reading resources10min
2 exercícios práticos
Week 1 - Problem Set20min
Week 1 - Programming Assignment [optional]2min
Semana
23 horas para concluir
Block Ciphers
Week 2. We introduce a new primitive called a block cipher that will let us build more powerful forms of encryption. We will look at a few classic block-cipher constructions (AES and 3DES) and see how to use them for encryption. Block ciphers are the work horse of cryptography and have many applications. Next week we will see how to use block ciphers to provide data integrity. The optional programming assignment this week asks students to build an encryption/decryption system using AES.
11 vídeos (total de (Total 167 mín.) min), 2 testes
11 videos
The Data Encryption Standard21min
Exhaustive Search Attacks19min
More Attacks on Block Ciphers 16min
The AES Block Cipher13min
Block Ciphers From PRGs11min
Review: PRPs and PRFs11min
Modes of Operation: One Time Key7min
Security for Many-Time Key (CPA security)22min
Modes of Operation: Many Time Key (CBC)16min
Modes of Operation: Many Time Key (CTR) 9min
2 exercícios práticos
Week 2 - Problem Set18min
Week 2 - Programming Assignment [Optional]8min
Semana
33 horas para concluir
Message Integrity
Week 3. This week's topic is data integrity. We will discuss a number of classic constructions for MAC systems that are used to ensure data integrity. For now we only discuss how to prevent modification of non-secret data. Next week we will come back to encryption and show how to provide both confidentiality and integrity. This week's programming project shows how to authenticate large video files. Even if you don't do the project, please read the project description --- it teaches an important concept called a hash chain.
11 vídeos (total de (Total 130 mín.) min), 2 testes
11 videos
MACs Based On PRFs9min
CBC-MAC and NMAC19min
MAC Padding8min
PMAC and the Carter-Wegman MAC15min
Introduction 10min
Generic Birthday Attack14min
The Merkle-Damgard Paradigm 11min
Constructing Compression Functions8min
HMAC7min
Timing attacks on MAC verification8min
2 exercícios práticos
Week 3 - Problem Set20min
Week 3 - Programming Assignment [Optional]2min
Semana
43 horas para concluir
Authenticated Encryption
Week 4. This week's topic is authenticated encryption: encryption methods that ensure both confidentiality and integrity. We will also discuss a few odds and ends such as how to search on encrypted data. This is our last week studying symmetric encryption. Next week we start with key management and public-key cryptography. As usual there is also an extra credit programming project. This week's project involves a bit of networking to experiment with a chosen ciphertext attack on a toy web site.
12 vídeos (total de (Total 167 mín.) min), 2 testes
12 videos
Definitions 5min
Chosen Ciphertext Attacks12min
Constructions From Ciphers and MACs20min
Case Study: TLS 1.217min
CBC Padding Attacks14min
Attacking Non-Atomic Decryption 9min
Key Derivation13min
Deterministic Encryption14min
Deterministic Encryption: SIV and Wide PRP20min
Tweakable Encryption14min
Format Preserving Encryption12min
2 exercícios práticos
Week 4 - Problem Set20min
Week 4 - Programming Project [Optional]2min
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Melhores avaliações
This course gives is perfect to start learning cryptography, explanations are detailed, topics carefully selected combining theory with real world examples and making emphasis in important details.
Cutting edge cryptography topics. Good explanations and slides, but pause button is highly recommended. Can be a bit too mathematical for the general public, and not very formal for mathematicians.
Instrutores
Dan Boneh
ProfessorComputer Science
Sobre Universidade de Stanford
The Leland Stanford Junior University, commonly referred to as Stanford University or Stanford, is an American private research university located in Stanford, California on an 8,180-acre (3,310 ha) campus near Palo Alto, California, United States.
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