9 Result(s)
within
Computer Communication Networks
Cryptology
Yosuke Todo
Chapter
Conference Paper
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Chapter and Conference Paper
Lower Bounds on the Degree of Block Ciphers
Only the method to estimate the upper bound of the algebraic degree on block ciphers is known so far, but it is not useful for the designer to guarantee the security. In this paper we provide meaningful lower...
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Chapter and Conference Paper
Modeling for Three-Subset Division Property Without Unknown Subset
A division property is a generic tool to search for integral distinguishers, and automatic tools such as MILP or SAT/SMT allow us to evaluate the propagation efficiently. In the application to stream ciphers,...
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Chapter and Conference Paper
Out of Oddity – New Cryptanalytic Techniques Against Symmetric Primitives Optimized for Integrity Proof Systems
The security and performance of many integrity proof systems like SNARKs, STARKs and Bulletproofs highly depend on the underlying hash function. For this reason several new proposals have recently been develop...
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Chapter and Conference Paper
Improved Differential-Linear Attacks with Applications to ARX Ciphers
We present several improvements to the framework of differential-linear attacks with a special focus on ARX ciphers. As a demonstration of their impact, we apply them to Chaskey and ChaCha and we are able to s...
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Chapter and Conference Paper
Programming the Demirci-Selçuk Meet-in-the-Middle Attack with Constraints
Cryptanalysis with SAT/SMT, MILP and CP has increased in popularity among symmetric-key cryptanalysts and designers due to its high degree of automation. So far, this approach covers differential, linear, impo...
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Chapter and Conference Paper
Gimli : A Cross-Platform Permutation
This paper presents Gimli, a 384-bit permutation designed to achieve high security with high performance across a broad range of platforms, including 64-bit Intel/AMD server CPUs, 64-bit and 32-bit ARM smartphone...
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Chapter and Conference Paper
Cube Attacks on Non-Blackbox Polynomials Based on Division Property
The cube attack is a powerful cryptanalytic technique and is especially powerful against stream ciphers. Since we need to analyze the complicated structure of a stream cipher in the cube attack, the cube attac...
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Chapter and Conference Paper
GIFT: A Small Present
In this article, we revisit the design strategy of PRESENT, leveraging all the advances provided by the research community in construction and cryptanalysis since its publication, to push the design up to its lim...
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Chapter and Conference Paper
Wide Trail Design Strategy for Binary MixColumns
AES is one of the most common block ciphers and many AES-like primitives have been proposed. Recently, many lightweight symmetric-key cryptographic primitives have also been proposed. Some such primitives requ...
