Gaurav Sharma

Author's posts

Oct 16

Seminar: François Gerard “SETLA: Signature and Encryption from Lattices” (Oct 17, 2018)

Oct 17, 2018 – 13.00 – room P.2NO8.08

Speaker: François Gerard (ULB)

Title: “SETLA: Signature and Encryption from Lattices”
Short abstract: “In data security, the main objectives one tries to achieve are confidentiality, data integrity and authentication. In a public-key setting, confidentiality is reached through asymmetric encryption and both data integrity and authentication through signature. Meeting all the security objectives for data exchange requires to use a concatenation of those primitives in an encrypt-then-sign or sign-then-encrypt fashion. Signcryption aims at providing all the security requirements in one single primitive at a lower cost than using encryption and signature together. Most existing signcryption schemes are using ElGamal-based or pairing-based techniques and thus rely on the decisional Diffie-Hellman assumption. With the current growth of a quantum threat, we seek for post-quantum counterparts to a vast majority of public-key primitives. In this work, we propose a lattice-based signcryption scheme in the random oracle model inspired from a construction of Malone-Lee. It comes in two flavors, one integrating the usual lattice-based key exchange into the signature and the other merging the scheme with a RLWE encryption. Our instantiation is based on a ring version of the scheme of Bai and Galbraith as was done in ring-TESLA and TESLA♯. It targets 128 bits of classical security and offers a save in bandwidth over a naive concatenation of state-of-the-art key exchanges and signatures from the literature. Another lightweight instantiation derived from GLP is feasible but raises long-term security concerns since the base scheme is somewhat outdated.”

Apr 25

WordPress Releases Security Update | US-CERT

WordPress Releases Security Update

Source: WordPress Releases Security Update | US-CERT

Dec 06

Android Dev Charter: First draft

PasteShare : partagez du texte !.

Nov 29

Resist Surveillance

Detekt is a free tool that scans your Windows computer for traces of FinFisher and Hacking Team RCS, commercial surveillance spyware that has been identified to be also used to target and monitor human rights defenders and journalists around the world. Read more about our Intentions & Methods.

via Resist Surveillance.

Nov 29

Sauvegarde la règle des 3-2-1 – Le blog de Genma

Sauvegarde la règle des 3-2-1 – Le blog de Genma.

Nov 28

A Few Thoughts on Cryptographic Engineering: Zero Knowledge Proofs: An illustrated primer

A Few Thoughts on Cryptographic Engineering: Zero Knowledge Proofs: An illustrated primer.

Aug 26

New Post on SecureHet.net about SIM cards hack

Bonjour à tous,

Juste une annonce pour vous dire qu’un petit article informatif sur le hack des cartes SIM a été publié sur securehet.net.

Bonne lecture!

[url] : http://securehet.net/news/2013/8/22/about-sim-card-attack-of-july-2013

Feb 06

FBI probes Anonymous intercept of US-UK hacking call

FBI probes Anonymous intercept of US-UK hacking call (@BBC News)

Jan 25

EU Commission proposes a comprehensive reform of the data protection rules

Commission proposes a comprehensive reform of the data protection rules (EU official website)

May 06

Article ReadWrite: “How Would a Website “Do Not Track” Law Affect Small Businesses?”

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