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One Bit is All It Takes: A Devastating Timing Attack on BLISS’s Non-Constant Time Sign Flips
Lattice-Based Cryptography Cryptanalysis BLISS
2019/8/7
As one of the most efficient lattice-based signature schemes, and one of the only ones to have seen deployment beyond an academic setting (e.g., as part of the VPN software suite strongSwan), BLISS ha...
LWE Without Modular Reduction and Improved Side-Channel Attacks Against BLISS
LWE problem lattice-based cryptography side-channel analysis
2018/11/19
Our interest in studying this problem stems from the side-channel attack against the BLISS lattice-based signature scheme described by Espitau et al. at CCS 2017. The attack targets a quadratic functi...
Side-Channel Attacks on BLISS Lattice-Based Signatures -- Exploiting Branch Tracing Against strongSwan and Electromagnetic Emanations in Microcontrollers
BLISS branch tracing SPA
2017/6/5
In this paper, we investigate the security of the BLISS lattice-based signature scheme, one of the most promising candidates for post-quantum-secure signatures, against side-channel attacks. Several w...
To BLISS-B or not to be - Attacking strongSwan's Implementation of Post-Quantum Signatures
lattice-based cryptography side-channel analysis signatures
2017/6/1
In the search for post-quantum secure alternatives to RSA and ECC, lattice-based cryptography appears to be an attractive and efficient option. A particularly interesting lattice-based signature schem...
Flush, Gauss, and Reload -- A Cache Attack on the BLISS Lattice-Based Signature Scheme
SCA FLUSH+RELOAD lattices
2016/3/18
We present the first side-channel attack on a lattice-based signature scheme, using the FLUSH+RELOAD cache-attack. The attack is targeted at the discrete Gaussian sampler, an important step in the Bim...
Accelerating Bliss: the geometry of ternary polynomials
Lattice Based Cryptgraphy Signature Bliss
2016/1/6
The signature scheme Bliss proposed by Ducas, Durmus, Lepoint and Lyubashevsky at
Crypto’13, is currently the most compact and efficient lattice-based signature scheme that is
provably secure under ...