David Naccache
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David Naccache is a cryptographer, currently a professor at the
École normale supérieure École or Ecole may refer to: * an elementary school in the French educational stages normally followed by Secondary education in France, secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing i ...
and a member of its Computer Laboratory. He was previously a professor at Panthéon-Assas University.


Biography

He received his Ph.D. in 1995 from the École nationale supérieure des télécommunications. Naccache's most notable work is in
public-key cryptography Public-key cryptography, or asymmetric cryptography, is the field of cryptographic systems that use pairs of related keys. Each key pair consists of a public key and a corresponding private key. Key pairs are generated with cryptographic alg ...
, including the
cryptanalysis Cryptanalysis (from the Greek ''kryptós'', "hidden", and ''analýein'', "to analyze") refers to the process of analyzing information systems in order to understand hidden aspects of the systems. Cryptanalysis is used to breach cryptographic se ...
of digital signature schemes. Together with Jacques Stern he designed the similarly named but very distinct Naccache-Stern cryptosystem and Naccache-Stern knapsack cryptosystem. In 2004 David Naccache and Claire Whelan, then employed by Gemplus International, used
image processing An image or picture is a visual representation. An image can be two-dimensional, such as a drawing, painting, or photograph, or three-dimensional, such as a carving or sculpture. Images may be displayed through other media, including a pr ...
techniques to uncover redacted information from the declassified 6 August 2001 President's Daily Brief '' Bin Ladin Determined To Strike in US''. They also demonstrated how the same process could be applied to other redacted documents. Naccache is also a visiting professor and
researcher Research is creative and systematic work undertaken to increase the stock of knowledge. It involves the collection, organization, and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness to ...
at the Information Security Group of
Royal Holloway, University of London Royal Holloway, University of London (RH), formally incorporated as Royal Holloway and Bedford New College, is a public university, public research university and a constituent college, member institution of the federal University of London. It ...
. In 2021, two epidemiologists denounced David Naccache to the management of the
École normale supérieure École or Ecole may refer to: * an elementary school in the French educational stages normally followed by Secondary education in France, secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing i ...
. They accused him of having produced a fraudulent report in November 2018 for Genevrier Laboratories in exchange for a large payment (more than €250,000) in defence of a delisted drug, Chondrosulf.


Awards

In 2020 Naccache was listed as a Fellow of the IACR, the International Association for Cryptologic Research, "for significant contributions to applied cryptography in industry and academia, and for the service to the IACR


References


External links


David Naccache's personal page
. Living people Public-key cryptographers French cryptographers Academic staff of Paris 2 Panthéon-Assas University Year of birth missing (living people) Academic staff of the École Normale Supérieure {{crypto-bio-stub