PhD -"Study of Post-quantum Cryptography Publick key signature schemes" M/F
il y a 1 mois
about the role
Your role is to conduct a thesis on "A study of post-quantum public key schemes."
Global context and problem statement: It is anticipated that within 5 to 15 years, efficient quantum processors will emerge, posing a threat to the security of public key signature schemes based on large number factorization and discrete logarithm calculations. It is primarily for this reason that the NIST (American standardization organization) plans to replace current public key signature schemes and has organized a call for proposals to select future standards. Orange has proposed two candidate schemes. Orange must maintain expertise in securing communications and data (storage and transit) to preserve sovereignty in the field of e-transactions.
Scientific objective, results, and challenges: The objective is to have the most efficient signature schemes possible (in terms of signature and key size, key and signature generation time).
The objective of the thesis is to analyze and evaluate the current candidates (those submitted to the NIST primarily). On paper, the best candidates will be those that withstand the tests of the best-known attacks and provide the best trade-offs in terms of size and time (on different significant execution platforms). Another part of the objective is to study and improve known attacks, and even conceive new ones. Similarly, it will be necessary to study and optimize the code's adherence to possible execution platforms, both in terms of performance and resistance to attacks through hidden channels (leakage of information during execution).
Finally, another objective is to provide theoretical security proofs related to the signature schemes, such as resistance to signature forgery attacks.
The main challenges revolve around mastering and deeply understanding the proposed post-quantum cryptographic primitives (as per the NIST) and designing attacks and security proofs for these schemes.
about you
Skills (scientific and technical) and personal qualities required for the position:
In-depth knowledge of asymmetric cryptography and protocols
Knowledge of post-quantum cryptography
Required education:
Master's degree in cryptography
Preferred experience:
Internship in the design, implementation, and evaluation of cryptographic schemes
additional information
The topic of asymmetric cryptography is complex and currently being challenged by the advent of quantum computers. Post-quantum cryptography aims to solve digital security problems such as confidentiality, integrity, and authentication, but it remains a vast and evolving field. The call for proposals for signature schemes by NIST is evidence of the necessity and difficulty in designing such schemes. This thesis aims to contribute to the emergence of new schemes, deepen our knowledge in the areas of design, cryptanalysis, implementation, and optimization, as well as provide proofs. It will also provide an opportunity to use tools such as formal calculations, proof modeling, programming, and collaborate with numerous researchers in the field.
department
Orange Innovation brings together the research and innovation activities and expertise of the Group's entities and countries. We work every day to ensure that Orange is recognized as an innovative operator by its customers, and we create value for the Group and the Brand in each of our projects. With 720 researchers, thousands of marketers, developers, designers and data analysts, it is the expertise of our 6,000 employees that fuels this ambition every day.
Orange Innovation anticipates technological breakthroughs and supports the Group's countries and entities in making the best technological choices to meet the needs of our consumer and business customers.
Within Innovation, you will be integrated into a cutting-edge research team specializing in cybersecurity, virtualization security, cryptography, and personal data protection. The DPI (Data, Privacy, and Innovation) team, part of the Data Intelligence Factory department at Orange Innovation, is located in Caen, Rennes, and Châtillon.
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