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A Practicable Timing Attack Against HQC and its Countermeasure
HQC BCH decoding Timing attack
2019/8/8
In this paper, we present a practicable chosen ciphertext timing attack retrieving the secret key of HQC. The attack exploits a correlation between the weight of the error to be decoded and the runnin...
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...
Timing attacks on Error Correcting Codes in Post-Quantum Secure Schemes
Post-Quantum Cryptography Decryption Failures Side-Channel Attacks
2019/3/20
While error correcting codes (ECC) have the potential to significantly reduce the failure probability of post-quantum schemes, they add an extra ECC decoding step to the algorithm. As this additional ...
Analysis of Secure Caches and Timing-Based Side-Channel Attacks
Secure Caches Side-Channel Attacks Security Analysis
2019/2/25
Many secure cache designs have been proposed in literature with the aim of mitigating different types of cache timing-based side-channel attacks. However, there has so far been no systematic analysis ...
In this paper we provide a formal treatment of proof of replicated storage, a novel cryptographic primitive recently proposed in the context of a novel cryptocurrency, namely Filecoin.
DAWG: A Defense Against Cache Timing Attacks in Speculative Execution Processors
secure processor cache timing attack cache partitioning
2018/5/11
Software side channel attacks have become a serious concern with the recent rash of attacks on speculative processor architectures. Most attacks that have been demonstrated exploit the cache tag state...
Cache-Timing Attacks on RSA Key Generation
applied cryptography public key cryptography RSA
2018/4/25
During the last decade, constant-time cryptographic software has quickly transitioned from an academic construct to a concrete security requirement for real-world libraries. Most of OpenSSL's constant...
QC-MDPC: A Timing Attack and a CCA2 KEM
post-quantum cryptography code-based cryptography QC-MDPC codes
2018/3/12
In 2013, Misoczki, Tillich, Sendrier and Barreto proposed a variant of the McEliece cryptosystem based on quasi-cyclic moderate-density parity-check (QC-MDPC) codes. This proposal uses an iterative bi...
A Survey of Microarchitectural Timing Attacks and Countermeasures on Contemporary Hardware
Microarchitectural timing attacks Cache-based timing attacks Countermeasures
2016/6/17
Microarchitectural timing channels expose hidden hardware state though timing. We survey recent attacks that exploit microarchitectural features in shared hardware, especially as they are relevant for...
Curious case of Rowhammer: Flipping Secret Exponent Bits using Timing Analysis
Rowhammer fault attack Prime + Probe
2016/6/17
Rowhammer attacks have exposed a serious vulnerability in modern DRAM chips to induce bit flips in data which is stored in memory. In this paper, we develop a methodology to combine timing analysis to...
CacheBleed: A Timing Attack on OpenSSL Constant Time RSA
side-channel attacks cache attacks cryptographic implementations
2016/3/2
The scatter-gather technique is a commonly-implemented approach to
prevent cache-based timing attacks. In this paper we show that scatter-gather is
not constant-time. We implement a cache timing att...
Theoretically secure cryptographic algorithms can be vulnerable to attacks due to their implementation flaws, which disclose side-channel information about the secret key. Bernstein's attack is a well...
We improve the timing attack on ECDSA in [1] by Brumley and
Tuveri. We use the Gaussian heuristic to analyse the length of error
vectors in the lattice Close Vector Problem in order to determine
th...
Exclusive Exponent Blinding May Not Suffice to Prevent Timing Attacks on RSA
Timing attack RSA CRT exponent blinding
2016/1/6
The references [9, 3, 1] treat timing attacks on RSA with
CRT and Montgomery’s multiplication algorithm in unprotected implementations.
It has been widely believed that exponent blinding would
prev...
Timing and Lattice Attacks on a Remote ECDSA OpenSSL Server: How Practical Are They Really?
DSA ECDSA Timing Attacks
2015/12/23
In 2011, B.B.Brumley and N.Tuveri found a remote timing attack
on OpenSSL’s ECDSA implementation for binary curves. We will
study if the title of their paper was indeed relevant (Remote Timing
Atta...