Researching aspects of post-quantum cryptography

Researching the security, efficiency, applications and the underlying mathematics of various post-quantum cryptographic systems: these next-generation schemes are designed to withstand attacks by both quantum and classical computers.

Start date

1 October 2019


3 years

Application deadline

Funding source

The University of Surrey

Funding information

Stipend of £16,000 per annum.

Studentship Fees are covered at UK /EU rates. 

The studentship is open to both UK/EU students (full award – tuition plus stipend) and international students (partial award - tuition at the UK/EU rate plus stipend). International applicants are encouraged to apply for a fee scholarship to reduce tuition fees to the UK/EU rate.


The Secure Systems Research Group in the Department of Computer Science at the University of Surrey invites applications for a funded PhD studentship in post-quantum cryptography. These next-generation cryptographic systems are designed to withstand attacks by both quantum and classical computers. The envisaged areas of research include isogeny-based and lattice-based post-quantum schemes (and possibly others), focusing on their security, efficiency, applications as well as the underlying mathematics.

The successful candidate will be supervised by Dr Robert Granger, whose main interest is computational number theory and its applications to cryptography and cryptanalysis.

Related links

Post-quantum cryptography project

Eligibility criteria


  • Ideally, a first-class honours degree in mathematics or computer science
  • Programming experience 
  • Basic knowledge of number theory
  • Basic knowledge of cryptography
  • Strong written and verbal communication skills, both in plain English and scientific language.


  • A masters degree in mathematics or computer science
  • Good knowledge of computational number theory
  • Basic knowledge of quantum mechanics/computation/information theory
  • Experience of conducting research.

This studentship is available to UK, EU and overseas students.

IELTS Academic: You must have achieved a 6.0 for each component of IELTS with an overall score of 6.5.

How to apply

Applications must be made through the online portal on the Computer Science PhD course page.

Please submit:

  • Your CV
  • Copies of all degree certificates and transcripts
  • The contact details of two referees (or arrange for their letters of recommendation to be emailed to
  • A cover letter explaining why you would be a suitable candidate for this studentship, according to the essential and desirable criteria.

Interviews will be conducted either in person at the University of Surrey or via Skype.

Informal enquiries are welcome; please contact

Computer Science PHD

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Application deadline

Contact details

Robert Granger
15 BB 02
Telephone: +44 (0)1483 683037

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