You can detect but you cannot hide: Fault Assisted Side Channel Analysis on Protected Software-based Block Ciphers

2020 ◽  
Keyword(s):  
Block Ciphers ◽  
Side Channel ◽  
Side Channel Analysis ◽  
Channel Analysis

scholarly journals SITM: See-In-The-Middle Side-Channel Assisted Middle Round Differential Cryptanalysis on SPN Block Ciphers

2019 ◽  
pp. 95-122
Author(s):  
Shivam Bhasin ◽  
Jakub Breier ◽  
Xiaolu Hou ◽  
Dirmanto Jap ◽  
Romain Poussier ◽  
...  
Keyword(s):  
Block Cipher ◽  
State Of The Art ◽  
Block Ciphers ◽  
Differential Cryptanalysis ◽  
Side Channel ◽  
Secret Key ◽  
Side Channel Analysis ◽  
Cryptographic Algorithms ◽  
Channel Analysis ◽  
Symmetric Block

Side-channel analysis constitutes a powerful attack vector against cryptographic implementations. Techniques such as power and electromagnetic side-channel analysis have been extensively studied to provide an efficient way to recover the secret key used in cryptographic algorithms. To protect against such attacks, countermeasure designers have developed protection methods, such as masking and hiding, to make the attacks harder. However, due to significant overheads, these protections are sometimes deployed only at the beginning and the end of encryption, which are the main targets for side-channel attacks.In this paper, we present a methodology for side-channel assisted differential cryptanalysis attack to target middle rounds of block cipher implementations. Such method presents a powerful attack vector against designs that normally only protect the beginning and end rounds of ciphers. We generalize the attack to SPN based ciphers and calculate the effort the attacker needs to recover the secret key. We provide experimental results on 8-bit and 32-bit microcontrollers. We provide case studies on state-of-the-art symmetric block ciphers, such as AES, SKINNY, and PRESENT. Furthermore, we show how to attack shuffling-protected implementations.

scholarly journals Algebraic, AIDA/Cube and Side Channel Analysis of KATAN Family of Block Ciphers

2010 ◽  
pp. 176-196 ◽  
Author(s):  
Gregory V. Bard ◽  
Nicolas T. Courtois ◽  
Jorge Nakahara ◽  
Pouyan Sepehrdad ◽  
Bingsheng Zhang
Keyword(s):  
Block Ciphers ◽  
Side Channel ◽  
Side Channel Analysis ◽  
Channel Analysis
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