Key facts

UNE unit code: COSC481

*You are viewing the 2026 version of this unit which may be subject to change in future.

Start
  • Trimester 1 - Online
24/7 online support
  • Yes
Intensive schools
  • No
Supervised exam
  • Yes
Credit points
  • 6

Unit information

UNE student studies on a laptop on her lounge at home

Cryptography is the study of secret writing that allows for messages to be converted to cyphertexts intelligible only to the intended recipients in possession of cryptographic keys. Cryptographic techniques are vital in modern cybersecurity to ensure confidentiality, integrity, authenticity and non-repudiation, and to protect data in storage and transit.

In this unit you will gain an understanding of the principles and practice of cryptography, starting with number and information theoretic concepts, and classical ciphers. You will learn about contemporary symmetric and public-key cryptosystems for encryption, authentication and digital signatures, as well as techniques for key management.

Offerings

For further information about UNE's teaching periods, please go to Principal Dates.

Teaching period
Mode/location
Trimester 1Online

*Offering is subject to availability

Intensive schools

There are no intensive schools required for this unit.

Enrolment rules

Pre-requisites
For students in Undergraduate Courses: AMTH140 and COSC130 and COSC230 and MTHS120.
Co-requisites
For students in GradCertCybsecComp or MCybComp, AMTH140 and (COSC120 or COSC230); or candidature in any other Postgraduate Course.
Restrictions
None

Notes

Please refer to the student handbook for current details on this unit.

Unit coordinator(s)

profile photo of Ljiljana Brankovic
Ljiljana BrankovicProfessor in Computational Science - Faculty of Science, Agriculture, Business and Law; School of Science and Technology

Learning outcomes

Upon completion of this unit, students will be able to:

  1. demonstrate knowledge and understanding of number and information theories and apply them to analyse ciphers;
  2. understand the principles behind classical ciphers and use software tools to break them;
  3. demonstrate in-depth knowledge and advanced understanding of modern cryptosystems, and be able to analyse and evaluate them; and
  4. design and/or implement a cryptosystem and conduct experiments to empirically compare it to a state-of-the-art system.

Assessment information

Assessments are subject to change up to 8 weeks prior to the start of the teaching period in which you are undertaking the unit.

TitleMust CompleteWeightOfferingsAssessment Notes
AssignmentYes15%All offerings

Assignment

AssignmentYes15%All offerings

Group Assignment

Final Examination - Assurance TaskYes50%All offerings

It is mandatory to pass this component in order to pass the unit.

QuizYes10%All offerings

Multiple choice and/or short answers and/or long answers.

Weekly quizzesYes10%All offerings 

Learning resources

Textbooks are subject to change up to 8 weeks prior to the start of the teaching period in which you are undertaking the unit.

Note: Students are expected to purchase prescribed material. Please note that textbook requirements may vary from one teaching period to the next.

Cryptography and Network Security: Principles and Practice Global edition

ISBN: 9781292437484

William Stallings, Pearson 8th ed. 2022

Note: Stallings' Cryptography and Network Security introduces you to the compelling and evolving field of cryptography and network security. The purpose of this text is to provide a practical survey of both the principles and practice of cryptography and network security.

Text refers to: All offerings

Excellence in experience, equity and employability

2026 Overall Experience

Five Stars,
20 Years in a Row

UNE is the only public uni in Australia awarded 20 straight years of five stars for Overall Experience.

Good Universities Guide 2007-2026
2026 Social Equality

Five Stars for
Social Equity

UNE rates among the top 20% of universities nationally and is #1 in NSW for Social Equity.

Good Universities Guide 2026
2026 Graduate Employment

Five Stars for
Graduate Employment

UNE rates among the top 20% of universities for Graduate Full-Time Employment and Starting Salary.

Good Universities Guide 2026 (Undergraduate)
2026 Diamond-Rated Digital Learning

Diamond-Rated Digital Learning

UNE’s leadership in digital learning earned the highest ‘Diamond’ rating in a peer review.

ASCILITE TELAS 2025
Woman studying online at home

Studying online

At UNE we know it takes more than just being online to be a great online university. It takes time and experience. We pioneered distance education for working adults back in the 1950s, so we’ve been doing this longer than any other Australian university.

We understand the challenges faced by busy adults studying at home. We know that a vital part of online study is your engagement with the learning community. Communication with your classmates, teaching staff and university support staff will enhance your study experience and ensure that your skills extend beyond the subject matter. UNE’s teaching staff are experts in their field which is why UNE consistently receives five stars from students for teaching quality, support and overall experience.*

*The Good Universities Guide

Stay connected

Join our mailing list for updates and helpful tips to support your study plans. You can unsubscribe at any time.

  • Course updates and important changes as they happen
  • Key dates for intakes, deadlines, and enrolment steps
  • Application guidance, including supporting documentation requirements
  • Next steps and what to expect after you apply or enquire

Ready to stay in the loop?

GET IN TOUCHUniversity campus with students on a sunny day, historic brick building and green lawn

Why study with us?

Graduate Jess Trow, Bachelor of Education (K–6)

UNE’s flexibility and support made the transition smooth and helped me find a great balance between academic responsibilities and personal growth. It was the perfect place to study education while staying true to my rural roots.

Jess Trow, Bachelor of Education (K–6)

What happens next?

laptop icon
1. Decide on your course

Got a question about a course you'd like to study? Contact our Future Student Team for help.

pencil icon
2. Apply

2026 applications are now open. The application process only takes 20 minutes to complete. Don’t delay, apply now!

form icon
3. Receive an offer, enrol and start studying

Your start date is based on the study period you choose to apply for.