Cryptography plays a vital role in modern digital communication systems. Cryptographic methods allow the encryption and decryption of messages sent across digital communication networks.

In this free online course the learner is first introduced to ancient ciphers and how they were used. The vital role of randomness in cryptographic methods is then explained and the learner is taken through step-by-step examples. The role of key scientists such as John von Neuman is also explained.

This course will be of great interest to all learners who would like to learn more about cryptography and the vital role it plays in today's digital communication networks.

Having completed this course learners will be able to:

• Describe the use of ciphers;
• Explain the role of randomness in encryption;
• Explain the development of RSA encryption.
• The Digital Classroom courses are free to study. To successfully complete a course you must score 80% or higher in each course assessments. Upon successful completion of a course, you can choose to make your achievement formal by purchasing an official The Digital Classroom Diploma, Certificate or PDF.

Having an official The Digital Classroom document is a great way to celebrate and share your success. It is:

• Ideal to include with CVs, job applications and portfolios
• A way to show your ability to learn and achieve high results