Improvement on the Method for Automatic Differential Analysis and Its Application to Two Lightweight Block Ciphers DESL and LBlock-s

2015 ◽  
pp. 97-111 ◽  
Author(s):  
Siwei Sun ◽  
Lei Hu ◽  
Kexin Qiao ◽  
Xiaoshuang Ma ◽  
Jinyong Shan ◽  
...  
Keyword(s):  
Block Ciphers ◽  
Differential Analysis

scholarly journals Differential Analysis of Block Ciphers SIMON and SPECK

2015 ◽  
pp. 546-570 ◽  
Author(s):  
Alex Biryukov ◽  
Arnab Roy ◽  
Vesselin Velichkov
Keyword(s):  
Block Ciphers ◽  
Differential Analysis

scholarly journals Differential analysis of hash functions and block ciphers: generalized approach

2015 ◽  
Vol 21 (2) ◽  
Author(s):  
Антон Михайлович Кудін ◽  
Богдан Анатолійович Коваленко
Keyword(s):  
Hash Functions ◽  
Block Ciphers ◽  
Differential Analysis

scholarly journals New primitives of controlled elements F2/4 for block ciphers

2020 ◽  
Vol 10 (5) ◽  
pp. 5470
Author(s):  
Minh Nguyen Hieu ◽  
Duy Ho Ngoc ◽  
Canh Hoang Ngoc ◽  
Trung Dinh Phuong ◽  
Manh Tran Cong
Keyword(s):  
Building Block ◽  
Hardware Implementation ◽  
Block Cipher ◽  
Block Ciphers ◽  
Differential Analysis ◽  
New Class ◽  
Use Of Data ◽  
Hardware Implementations ◽  
Bit Vector ◽  
Elementary Building

This paper develops the cipher design approach based on the use of data-dependent operations (DDOs). A new class of DDO based on the advanced controlled elements (CEs) is introduced, which is proven well suited to hardware implementations for FPGA devices. To increase the hardware implementation efficiency of block ciphers, while using contemporary FPGA devices there is proposed an approach to synthesis of fast block ciphers, which uses the substitution-permutation network constructed on the basis of the controlled elements F2/4 implementing the 2 x 2 substitutions under control of the four-bit vector. There are proposed criteria for selecting elements F2/4 and results on investigating their main cryptographic properties. It is designed a new fast 128-bit block cipher MM-128 that uses the elements F2/4 as elementary building block. The cipher possesses higher performance and requires less hardware resources for its implementation on the bases of FPGA devices than the known block ciphers. There are presented result on differential analysis of the cipher MM-128

New Automatic Search Method for Truncated-Differential Characteristics Application to Midori, SKINNY and CRAFT

2020 ◽  
Vol 63 (12) ◽  
pp. 1813-1825
Author(s):  
AmirHossein Ebrahimi Moghaddam ◽  
Zahra Ahmadian
Keyword(s):  
Mixed Integer Linear Programming ◽  
Random Permutation ◽  
Block Ciphers ◽  
Search Method ◽  
Mixed Integer ◽  
Differential Analysis ◽  
Differential Characteristic ◽  
Search Tool ◽  
Automatic Search ◽  
Truncated Differential

Abstract In this paper, using Mixed-Integer Linear Programming, a new automatic search tool for truncated differential characteristic is presented. Our method models the problem of finding a maximal probability truncated differential characteristic, being able to distinguish the cipher from a pseudo-random permutation. Using this method, we analyze Midori64, SKINNY64/X and CRAFT block ciphers, for all of which the existing results are improved. In all cases, the truncated differential characteristic is much more efficient than the (upper bound of) bit-wise differential characteristic proven by the designers, for any number of rounds. More specifically, the highest possible rounds, for which an efficient differential characteristic can exist for Midori64, SKINNY64/X and CRAFT are 6, 7 and 10 rounds, respectively, for which differential characteristics with maximum probabilities of $2^{-60}$, $2^{-52}$ and $2^{-62.61}$ (may) exist. Using our new method, we introduce new truncated differential characteristics for these ciphers with respective probabilities $2^{-54}$, $2^{-4}$ and $2^{-24}$ at the same number of rounds. Moreover, the longest truncated differential characteristics found for SKINNY64/X and CRAFT have 10 and 12 rounds, respectively. This method can be used as a new tool for differential analysis of SPN block ciphers.

IMPROVED LUMPED-DIFFERENTIAL ANALYSIS OF THE FREEZING PROCESS IN A SUPERCOOLED WATER DROPLET

2020 ◽  
Author(s):  
Emerson Barbosa dos Anjos ◽  
Carolina Palma Naveira Cotta ◽  
Renato Machado Cotta ◽  
Igor Soares Carvalho ◽  
Manish Tiwari
Keyword(s):  
Water Droplet ◽  
Supercooled Water ◽  
Freezing Process ◽  
Differential Analysis

Hash Functions Based on Block Ciphers

2009 ◽  
Vol 20 (3) ◽  
pp. 682-691
Author(s):  
Pin LIN ◽  
Wen-Ling WU ◽  
Chuan-Kun WU
Keyword(s):  
Hash Functions ◽  
Block Ciphers
Sign in / Sign up

Export Citation Format

Share Document