Cryptography in Cyber Security with Python

Name: Cryptography in Cyber Security with Python
Rating: 3.7 (25 reviews)

Learn Cryptography in Modern Applications with Implementation in Python, Improve Your Information Security Skills

Created byÖmer Sever

Last updated 2/2025

English

What you'll learn

cryptography
cyber security
confidentiality
quantum computing
crypto in python

Course content

4 sections • 40 lectures • 3h 24m total length

Giriş3:04
This course is about Cryptography focusing on Cyber Security.
You can find basics of cryptography,
Symmetric and asymmetric algorithms, like AES and RSA, DH, ECDH
Hash Algorithm like SHA-1, SHA-256, MD-5
Message Authentication Codes (MAC, HMAC)
Cryptographic Protocols like Autheticated Key Exchange, TLS
Security Systems like PKI, Secure Message, Voice, Blockchain

Main focus will be cyber security means that you will not be drown in advanced math, our aim is not to be a cryptographer. That is more tied with math subjects like abstract algebra, number theory, finite fields and so on. You will get key principals of crypto to
Implement security systems efficiently,
Enhance the reliability of the systems you are administering,
Improve your cyber security skills.
Cryptography in Use5:55
Learn where cryptography is used. Cryptography in car keys, Whatsapp, Smart Cards etc.
Start-Up Basics! What is Cryptography?5:39
What is Cryptography, Cryptanalysis, Cryptology?
What is Encryption and Decryption?
History of Cryptography2:37
Ancient Ciphers:
Scytale
Caesar Cipher
Implementation In Python: Caesar Cipher7:37
You will implement Caesar Cipher in Python.
Uses Python 3.7 and Spyder as IDE
Your First Cipher2:35
Add a menu to the program for:
Encrypt
Decrypt
Brute Force Attack
Your First Cryptanalysis3:04
Cryptanalysis of Caesar Cipher, both with Brute Force Attack and Frequency Analysis.
Historical Ciphers5:18
More historical ciphers:
Vigenere
Enigma

Introduction to Modern Cryptography6:38
Principles of Modern Cryptography
Look at the big picture. Cryptography Types.
Symmetric
Asymmetric
Hash
HMAC
Signature
Signature Verification
Symmetric Algorithms - Block Ciphers - AES9:39
Which Symmetric Algorithm shoul I use Block vs Stream Ciphers?
Advanced Encryption Standard - AES
Which Block Cipher Should I Use?
Which Block Cipher?2:22
Which block cipher should I use?
Symmetric Algorithms - Modes of Operation8:18
What to do when message is bigger than block size?
Use Mode of Operation:
ECB
CBC
CFB
OFB
CTR
Authenticated Encryption
And finaly a comparison of Modes of Operation
Which mode of operation should I use?
Implementation In Python: AES3:38
AES implementation with Python
Block size encryption only.
Implementation In Python: AES - Package Import2:52
Continued Implementatiton of AES.
Use of CBC mode of operation.
Importing package for mode of operations.
Implementation In Python: AES - CBC Mode2:34
Continued Implementatiton of AES.
Use of CBC mode of operation.
Symmetric Algorithms - Stream Ciphers12:47
What is stream cipher?
Linear Feedback Shit Registers (LFSR)
Which Stream Cipher to use?
Salsa 20
ChaCha
Implementation In Python: Stream Cipher Salsa 202:35
Salsa 20 Stream Cipher Implementation with Python
Hash Functions8:19
What is Hash Function?
Security properties.
Secure Hash Algorithm
SHA-1
SHA-2
SHA-3
Implementation In Python: Hash Functions SHA Family4:54
Implementation of Hash Functions with Python:
SHA-2 family, SHA-256, SHA-512, SHA-512/256
SHA-3-256
MAC Functions8:13
Why we need MAC?
How to design a MAC function?
MAC functions from Hash Functions
HMAC-SHA-1
HMAC-SHA-2
MAC functions from Block Ciphers
CBC-MAC
OMAC/CMAC
GMAC
Poly1305
Implementation In Python: MAC Functions5:12
Implementation of MACFunctions with Python:
HMAC-SHA256
CMAC-AES
Asymmetric Cryptography - Introduction4:44
Types of Asymmetric Cryptography.
Encryption
Signature
Key Exchange
Diffie-Hellman Key Exchange4:00
Diffie-Hellman key exchange is explained with example. Security is described by Discrete Logarithm Problem.
RSA8:03
RSA encryption process is explained with example. Security is described with Integer Factorization
Implementation In Python: RSA8:25
Implementation of RSA with Python.
First key generation.
Then encryption and decryption.
Finally encoding tuning.
Implementation In Python: RSA Signatures2:51
Implementation of RSA Signatures with Python.
Elliptic Curve Cryptography11:26
Elliptic Curves
Arithmetic on Elliptic Curves (Negation, Addition, Doubling)
EC-DLP
EC-DH
EC-DSA
Which Elliptic Curve to use?
Implementation In Python: Elliptic Curve Cryptography4:52
Implementation of ECDSA with Python.
First key generation.
Then signature generation and verification.

Introduction to Cryptographic Protocols6:47
What are cryptographic protocols and why do we need them?
What are the types of cryptographic protocols and which attacks types are possible?
Authenticated Key Exchange - AKE Protocols5:59
Goals of Authenticated Key Exchange protocols.
Types of AKE protocols
Standards on AKE protocols
My First Cryptographic Protocol6:57
Present a simple AKE cryptographic protocol.
First attack and then improve its security.
SSL/TLS Introduction7:08
An intro to SSL/TLS
Version comparison of TLS
Used ciphersuites & performance
SSL/TLS Protocol and Attacks5:59
Message Flaws of TLS v1.2 and v1.3
Attacks to SSL/TLS
Different attack types:
Ciphersuites
Implementation
Functions
SSL/TLS Implementation6:22
Different Implementations of TLS :
1- Browser-to-Server
2- Browser-Proxy-Server
Self-signed certificate
Certificate of a trusted CA
SSL/TLS Services:
Let's Encrypt
Cloudflare

Introduction0:29
Explore quantum cryptography as a new area, view real quantum devices including a Google AI quantum computer, and learn how companies and governments develop quantum computers on public clouds.
Relationship Between Quantum Computing, Cryptography and Key Distribution1:30
Clarify how quantum computing spurred quantum cryptography and post-quantum cryptography, while quantum key distribution remains a separate, quantum technique for secure key exchange as part of quantum cryptography.
Quantum Key Distribution - QKD0:56
Explore quantum key distribution (QKD) and how quantum properties reveal eavesdropping via transmission errors, while slower rates pair with symmetric encryption to refresh keys.
Quantum Mechanics0:50
Explore quantum computing basics and the role of quantum mechanics in cryptography, explaining how microscopic particle behavior impacts cryptography without claiming full understanding.
Qubits1:34
A qubit encodes a superposition of zero and one with complex amplitudes alpha-zero and alpha-one, whose squared magnitudes yield measurement probabilities. Unlike classical bits, qubits normalize and cannot be copied.
Quantum Gates1:44
Explore quantum gates as the building blocks of quantum computing, tracing evolution from bits to qubits. Focus on the Hadamard gate, its equal superposition and inverse property.

Requirements

basic math
general computing

Description

You can find basics of cryptography and learn Cryptographic Toolset implemented in Python.

Symmetric and asymmetric algorithms,;

AES,
Salsa20,
RSA,
DH,
ECDH,
ECDSA

Hash Functions:

SHA-1,
SHA-2,
SHA-3
MD5

Message Authentication Codes (MAC, HMAC, CMAC)

You can find answers to the questions?

Which one to use Block Cipher or Stream Cipher? When and Where?
Which Block Cipher to use? Alternatives.
Which Mode of Operation to use?
What is LFSR?
Why we need MAC functions?

Main focus will be cyber security means that you will not be drown in advanced math, our aim is not to be a cryptographer. That is more tied with math subjects like abstract algebra, number theory, finite fields and so on. You will get key principals of cryptography.

Implement security systems efficiently,

Enhance the reliability of the systems you are administering,

Improve your cyber security skills.

Who this course is for:

Developers
cyber security personnel
devsecops
security administrators
system administrators

Cryptography in Cyber Security with Python

What you'll learn

Explore related topics

Course content

Basics of Cryptography8 lectures • 36min

Modern Cryptography20 lectures • 2hr 2min

Cryptographic Protocols and Systems6 lectures • 39min

Quantum Cryptography6 lectures • 7min

Requirements

Description

Who this course is for: