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Pushing the speed limit of constant-time discrete Gaussian sampling. A case study on Falcon
Post-quantum signature Falcon constant-time
2019/3/6
Sampling from discrete Gaussian distribution has applications in lattice-based post-quantum cryptography. Several efficient solutions have been proposed in recent years. However, making a Gaussian sam...
How Does Strict Parallelism Affect Security? A Case Study on the Side-Channel Attacks against GPU-based Bitsliced AES Implementation
MBFFA AES Implementation
2018/11/12
Parallel cryptographic implementations are generally considered to be more advantageous than their non-parallel counterparts in mitigating side-channel attacks because of their higher noise-level. So ...
Key Extraction using Thermal Laser Stimulation: A Case Study on Xilinx Ultrascale FPGAs
TLS FPGA
2018/8/2
Thermal laser stimulation (TLS) is a failure analysis technique, which can be deployed by an adversary to localize and read out stored secrets in the SRAM of a chip. To this date, a few proof-of-conce...
Side-Channel Analysis of SM2: A Late-Stage Featurization Case Study
applied cryptography public-key cryptography side-channel analysis
2018/7/9
SM2 is a public key cryptography suite originating from Chinese standards, including digital signatures and public key encryption. Ahead of schedule, code for this functionality was recently mainlined...
Threshold Implementation in Software - Case Study of PRESENT
Side-Channel Analysis Boolean masking Threshold Implementation
2018/3/6
Masking is one of the predominantly deployed countermeasures in order to prevent side-channel analysis (SCA) attacks. Over the years, various masking schemes have been proposed. However, the implement...
A Practical Fault Attack on ARX-like Ciphers with a Case Study on ChaCha20
ChaCha ARX cipher Laser
2017/11/13
This paper presents the first practical fault attack on the ChaCha family of addition-rotation-XOR (ARX)-based stream ciphers. ChaCha has recently been deployed for speeding up and strengthening HTTPS...
Automated Fault Analysis of Assembly Code (With a Case Study on PRESENT Implementation)
automated fault attack software implementations assembly code
2017/9/1
Fault injection attack models are normally determined by analyzing the cipher structure and finding exploitable spots in non-linear and diffusion layers. However, this level of abstraction is often to...
Running compression algorithms in the encrypted domain: a case-study on the homomorphic execution of RLE
FHE RLE
2017/5/11
This paper is devoted to the study of the problem of running compression algorithms in the encrypted domain, using a (somewhat) Fully Homomorphic Encryption (FHE) scheme. We do so with a particular fo...
IPcore implementation susceptibility: A case study of Low latency ciphers
Side channel Attack Low latency Cipher Intellectual Property
2017/3/21
Security evaluation of third-party cryptographic IP (Intellectual Property) cores is often ignored due to several reasons including, lack of awareness about its adversity, lack of trust validation met...
Multilateral White-Box Cryptanalysis: Case study on WB-AES of CHES Challenge 2016
hite-Box Cryptanalysis Side-Channel Attack Software Implementation
2016/12/10
The security requirement of white-box cryptography (WBC) is that it should protect the secret key from a white-box security model that permits an adversary who is able to entirely control the executio...
Cryptographic Randomness on a CC2538: a Case Study
IoT System on Chip (SoC) Side channel attack
2016/12/8
Smart metering, smart parking, health, environment monitoring, and other applications drive the deployment of the so-called Internet of Things (IoT). Whilst cost and energy efficiency are the main fac...
EnCounter: On Breaking the Nonce Barrier in Differential Fault Analysis with a Case-Study on PAEQ
fault analysis authenticated encryption PAEQ
2016/6/20
This work exploits internal differentials within a cipher in the context of Differential Fault Analysis (DFA). This in turn overcomes the nonce barrier which acts as a natural counter-measure against ...
Decomposed S-Boxes and DPA Attacks: A Quantitative Case Study using PRINCE
Threshold Implementation Transparency Order S-box decomposition
2016/6/20
Lightweight ciphers become indispensable and inevitable in the ubiquitous smart devices. However, the security of ciphers is often subverted by various types of attacks, especially, implementation att...
Side-Channel Analysis Protection and Low-Latency in Action - case study of PRINCE and Midori
Side-Channel Analsysi Masking Threshold Implementation
2016/5/24
During the last years, the industry sector showed particular interest in solutions which allow to encrypt and decrypt data within one clock cycle. Known as low-latency cryptography, such ciphers are d...
Balanced Encoding to Mitigate Power Analysis: A Case Study
Balanced Encoding Power Analysis
2016/1/5
Most side channel countermeasures for software implementations
of cryptography either rely on masking or randomize the execution
order of the cryptographic implementation. This work proposes a count...