Comprehensive Study of Integral Analysis on LBlock

スポンサーリンク

概要

• 論文の詳細を見る

• The current paper presents an integral cryptanalysis in the single-key setting against light-weight block-cipher LBlock reduced to 22 rounds. Our attack uses the same 15-round integral distinguisher as the previous attacks, but many techniques are taken into consideration in order to achieve comprehensive understanding of the attack; choosing the best balanced-byte position, meet-in-the-middle technique to identify right key candidates, partial-sum technique, relations among subkeys, and combination of the exhaustive search with the integral analysis. Our results indicate that the integral cryptanalysis is particularly useful for LBlock like structures. At the end of this paper, which factor makes the LBlock structure weak against the integral cryptanalysis is discussed. Because designing light-weight cryptographic primitives is an actively discussed topic, we believe that this paper returns some useful feedback to future designs.

著者

• WANG Lei

  Nanyang Technological University

• SASAKI Yu

  NTT Secure Platform Laboratories, NTT Corporation

関連論文

• Open-Key Distinguishers for the Internal Block Cipher of Tweaked Lesamnta
• Boomerang Distinguishers on MD4-Based Hash Functions: First Practical Results on Full 5-Pass HAVAL Compression Function
• Distinguishers on Double-Branch Compression Function and Applications to Round-Reduced RIPEMD-128 and RIPEMD-160
• Comprehensive Study of Integral Analysis on LBlock

スポンサーリンク