Description
Whereas, in traditional public-key encryption, decryption is an all-or-nothing affair (i.e., a receiver is either able to recover the entire message using its key, or nothing), functional encryption enables fine-grained access control and computation on encrypted data, as required to protect data in the cloud.<br/> In the first part of the talk, we provide an introduction to functional encryption and an overview of its impact on the field of cryptography. In the second part, we propose a simple functional encryption scheme for the inner-product functionality that despite its simplicity can be successfully used in the context of descriptive statistics. The security of the scheme can be based on the Decisional Diffie–Hellman or the Learning with Errors assumption offering a trade-offs in terms of expressiveness and efficiency.
Next sessions
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Séminaire C2 à INRIA Paris
Emmanuel Thomé et Pierrick Gaudry Rachelle Heim Boissier Épiphane Nouetowa Dung Bui Plus d'infos sur https://seminaire-c2.inria.fr/ -
Attacking the Supersingular Isogeny Problem: From the Delfs–Galbraith algorithm to oriented graphs
Speaker : Arthur Herlédan Le Merdy - COSIC, KU Leuven
The threat of quantum computers motivates the introduction of new hard problems for cryptography.One promising candidate is the Isogeny problem: given two elliptic curves, compute a “nice’’ map between them, called an isogeny.In this talk, we study classical attacks on this problem, specialised to supersingular elliptic curves, on which the security of current isogeny-based cryptography relies. In[…]-
Cryptography
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