Post-quantum construction of a leakage resilient encryption

During the third SeCloud Brokerage Event on data security, which takes place on 29 March, Veronika Kuchta of ULB/QualSec will present a post-quantum construction of a leakage-resilient fully homomorphic identity-based encryption.

Brussels' research community engaged in the information security initiative SeCloud will team up with companies presenting their experiences and best practices in a variety of information security topics – from security risk frameworks and privacy law over security aspects of programming languages to post-quantum cryptography, to name but a few.  

Veronika Kuchta of ULB/QualSec will give the presentation 'Post-quantum construction of a leakage resilient fully homomorphic identity-based encryption'. 

Security of traditional public-key cryptographic schemes depends on privacy of secret keys and can be analysed in an idealised model under the assumption that the secret keys are hidden from adversary. Nevertheless, many schemes become insecure during their implementation into a real system. An adversary can use certain physical properties of a cryptoscheme to learn information of the secret inputs. Such attacks are called side-channel attacks. A solution for this problem can be provided by the leakage-resilient cryptography. We present an identity-based encryption scheme that is resilient to the leakage of the master secret key. Identity-based encryption has a distinctive feature that allows users to encrypt messages using any possible string as a public key which identifies the recipient. 

The new post-quantum construction of a leakage-resilient fully homomorphic identity-based encryption with aforementioned features has an interesting potential for the realisation of computing on encrypted data in the cloud, as it would provide security guarantees going beyond trust in the cloud provider and their infrastructure. To find out more about it, join us on our third SeCloud Brokerage Event! You will find all further information in our agenda.

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