Weekly study10 hours
Symmetric Key Cryptography
Explore the principles of symmetric key cryptography
Symmetric key cryptography requires that the sender and recipient of a secret message both know the ‘key’.
In this course we will examine this concept and modern implementations, as well as the trade-off between key size, security and performance.
- Symmetric key cryptography
- DES, AES and other algorithms
- Modes of operation
- Key size, security and performance
Learning on this course
You can take this self-guided course and learn at your own pace. On every step of the course you can meet other learners, share your ideas and join in with active discussions in the comments.
What will you achieve?
By the end of the course, you‘ll be able to...
- Describe the theory and practice of symmetric cryptography and key exchange
- Debate appropriate application of symmetric key cryptography under different circumstances
- Identify the appropriate modes of operation, such as Electronic Code Book (ECB), Cipher Block Chaining (CBC) or Counter (CTR)
- Demonstrate properties of various ciphers and modes, such as diffusion, error propagation
Who is the course for?
This course is for people who want to understand more about the way cryptography keeps our communications safe, either out of curiosity or to prepare for advanced study of the topic.
Please note that the individuals detailed in the “Who will you learn with?” section below, are current staff members and may be subject to change.