Cryptography and Hashing Fundamentals in Python and Java
What you'll learn
- Understand the basics of private key encryption systems
- Caesar cipher and Vigenere cipher
- Frequency analysis and the Kasiski algorithm
- One Time Pad (OTP) and Shannon secrecy
- Random and pseudo-random numbers
- Data Encryption Standard (DES) and Advanced Encryption Standard (AES)
- Understand the basics of public key encryption systems
- RSA and Diffie-Hellman key exchange algorithm
- Elliptic Curve Cryptography
- Modular arithmetic basics (Fermat's theorem, finding primes, integer factorization and discrete logarithm)
- Euclidean algorithm (greatest common divisor problem) and the extended Euclidean algorithm
- Understand hashing (MD5 and SHA)
- You should have an interest in cryptography as well as some programming knowledge in Python or Java!
In this course you will learn about cryptography and hashing in Python and Java as well. You will understand most of the private key (symmetric) and pubic key (asymmetric) cryptosystems on a step by step basis. You can learn about the theory as well as the implementation for every cryptographic algorithm - and how to crack these systems (so what are the weaknesses).
Chapter 1 - Cryptography Fundamentals
what is the aim of cryptography?
private key and public key cryptosystems
Chapter 2 - Caesar Cipher
Caesar cipher theory and implementation
how to crack Caesar cipher
frequency analysis and language detection
Chapter 3 - Vigenere Cipher
Vigenere cipher theory and implementation
how to crack Vigenere cipher with Kasiski-algorithm
Chapter 4 - One Time Pad (Vernam Cipher)
random and pseudo-random numbers
the XOR logical operator
one time pad theory and implementation
why is it impossible to crack Vernam cipher?
Chapter 5 - Data Encryption Standard (DES)
data encryption standard (DES) theory and implementation
linear cryptoanalysis and differential cryptoanalysis
Chapter 6 - Advanced Encryption Standard (AES)
advanced encryption standard (AES) theory and implementation
Shannon's confusion and diffusion
Chapter 7 - Asymmetric Cryptosystems
problems with private key cryptosystems
random numbers and prime numbers in cryptography
Chapter 8 - Modular Arithmetic
modular arithmetic fundamentals
finding prime numbers - naive approach and advanced algorithms
integer factorization problem
discrete logarithm problem
Chapter 9 - Diffie-Hellman Key Exchange
Diffie-Hellman key exchange algorithm theory and implementation
prime numbers and primitive roots
Chapter 10 - RSA Algorithm
RSA algorithm theory and implementation
the problem of factorization
Chapter 11 - Advanced Modular Arithmetic
Euclidean and the greatest common divisor (GCD) problem
extended Euclidean algorithm (EGCD)
modular inverse problem
Chapter 12 - Elliptic Curve Cryptography (ECC)
elliptic curve cryptography theory and implementation
why does Bitcoin use elliptic curve cryptography?
Chapter 13 - Cryptographic Hashing
what is hashing in cryptography?
properties of hashing
MD5 and SHA algorithms
Thanks for joining my course, let's get started!
Who this course is for:
- Python or Java developers curious about cryptography!
My name is Balazs Holczer. I am from Budapest, Hungary. I am qualified as a physicist. At the moment I am working as a simulation engineer at a multinational company. I have been interested in algorithms and data structures and its implementations especially in Java since university. Later on I got acquainted with machine learning techniques, artificial intelligence, numerical methods and recipes such as solving differential equations, linear algebra, interpolation and extrapolation. These things may prove to be very very important in several fields: software engineering, research and development or investment banking. I have a special addiction to quantitative models such as the Black-Scholes model, or the Merton-model.
Take a look at my website if you are interested in these topics!