The Return of the SDitH

Aguilar-Melchor, Carlos; Gama, Nicolas; Howe, James; Hülsing, Andreas; Joseph, David; Yue, Dongze

doi:10.1007/978-3-031-30589-4_20

Cited by 20 publications

(4 citation statements)

References 16 publications

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“…Note that the protocol presented here (Figure 3) differs from the one described in the initial Biscuit submission [19]. In particular, we use the hypercube technique [33] and also include a security proof (Theorem 1) of the new ZKPoK.…”

Section: Organization Of the Paper And Main Resultsmentioning

confidence: 99%

“…AIMer is based on the hardness of key-recovery of a MPC-friendly block-cipher [31], MIRA and MiRitH are based on the MinRank problem [9,4], MQOM is based on the problem of solving random quadratic equations [23], PERK is based on the Permuted Kernel Problem [3], RYDE is based on the rank syndrome decoding problem [8], and SDith relies on the syndrome decoding problem [32]. All these schemes proposed several parameter sets parameter in order to optimize either the signature size (short variant) or the signing and verification times (fast variant).…”

Section: Other Submitted Mpcith Signature Schemesmentioning

confidence: 99%

“…Also, [33] described a so-called hypercube variant of MPCitH that allows improving efficiency for a large number of parties in the MPC protocol. Indeed, a large number of parties leads to shorter signatures but increases signature generation and verification times.…”

Section: -Pass Identification Schemesmentioning

confidence: 99%

See 2 more Smart Citations

Biscuit: New MPCitH Signature Scheme from Structured Multivariate Polynomials

Bettale,

Kahrobaei,

Perret

et al. 2024

Lecture Notes in Computer Science

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This paper describes Biscuit, a new multivariate-based signature scheme derived using the MPCitH approach. The security of Biscuit is related to the problem of solving a set of quadratic structured systems of algebraic equations. These equations are highly compact and can be evaluated using very few multiplications. The core of Biscuit is a rather simple MPC protocol which consists of the parallel execution of a few secure multiplications using standard optimized multiplicative triples. This paper also includes several improvements with respect to Biscuit submission to the last NIST PQC standardization process for additional signature schemes. Notably, we introduce a new hypercube variant of Biscuit, refine the security analysis with recent third-party attacks, and present a new avx2 implementation of Biscuit.

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Section: Organization Of the Paper And Main Resultsmentioning

confidence: 99%

Section: Other Submitted Mpcith Signature Schemesmentioning

confidence: 99%

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Biscuit: New MPCitH Signature Scheme from Structured Multivariate Polynomials

Bettale,

Kahrobaei,

Perret

et al. 2024

Lecture Notes in Computer Science

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“…Stock Return is the total income an investor obtains from their investment each year and is usually expressed as a percentage of the initial investment value. It is important to know that the return ratio is fixed and does not change if the number of shares owned by investors changes (Aguilar-Melchor et al, 2023). Stock Return is the total income an investor obtains from their investment each year and is usually expressed as a percentage of the initial investment value.…”

Section: Stock Returnmentioning

confidence: 99%

The Moderating Role BOPO of CAR, NPL, NIM and LDR on Banking Stock Returns on the Indonesian Stock Exchange

Siagian,

Sihotang,

Rinendy

2024

IJBLE

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This research aims to determine and prove the partial and simultaneous influence of Capital Adequency Ratio (CAR), Non Performing Loans (NPL), Net Interest Margin (NIM), Loan to Deposit Ratio (LDR), Operating Costs Operating Income (BOPO) on Stock returns. The second objective is to prove whether BOPO moderates the relationship between Capital Adequency Ratio (CAR), Non Performing Loan (NPL), Net Interest Margin (NIM), Loan to Deposit Ratio (LDR) and Operating Costs and Operating Income (BOPO) on stock returns. This research uses an associative quantitative approach model, namely research to test the influence of the independent variable on the dependent variable. The population used in this research was 43 banks that were included and registered on the IDX for the 2018-2022 period. The sampling technique used uses the Purposive Sampling technique, namely that samples are taken based on certain criteria so that 20 banks are obtained with an observation period of 5 years so that 100 observation data are obtained. The data analysis technique uses Moderating regression where data analysis will use residual testing. Hypothesis testing uses the t test, F test and residual test. The results of this research prove that CAR, NIM, LDR partially have no effect on stock returns. The NPL and BOPO variables partially influence stock returns. Based on the simultaneous test, it can be concluded that the variables CAR, NPL, NIM, LDR and BOPO simultaneously have a significant effect on stock returns. The residual test results show that BOPO does not moderate the relationship between CAR, LDR, NIM and NPL on the Return variable.

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Take Your MEDS: Digital Signatures from Matrix Code Equivalence

Chou

Niederhagen

Persichetti

et al. 2023

Lecture Notes in Computer Science

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In this paper, we show how to use the Matrix Code Equivalence (MCE) problem as a new basis to construct signature schemes. This extends previous work on using isomorphism problems for signature schemes, a trend that has recently emerged in post-quantum cryptography. Our new formulation leverages a more general problem and allows for smaller data sizes, achieving competitive performance and great flexibility. Using MCE, we construct a zero-knowledge protocol which we turn into a signature scheme named Matrix Equivalence Digital Signature (MEDS). We provide an initial choice of parameters for MEDS, tailored to NIST's Category 1 security level, yielding public keys as small as 2.8 kB and signatures ranging from 18 kB to just around 6.5 kB, along with a reference implementation in C. Keywords: group action • signature scheme • code-based cryptography • post-quantum cryptography • matrix codes An extended and correctly typeset version of this paper can be found at https://eprint. iacr.org/2022/1559.

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The Return of the SDitH

Cited by 20 publications

References 16 publications

Biscuit: New MPCitH Signature Scheme from Structured Multivariate Polynomials

Biscuit: New MPCitH Signature Scheme from Structured Multivariate Polynomials

The Moderating Role BOPO of CAR, NPL, NIM and LDR on Banking Stock Returns on the Indonesian Stock Exchange

Take Your MEDS: Digital Signatures from Matrix Code Equivalence

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