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Asymptotic Bound for RSA Variant with Three Decryption Exponents
This paper presents a cryptanalysis attack on the RSA variant with modulus for with three public and private exponents sharing the same modulus where and are consider to prime having the same bit size. Our attack shows that we get the private exponent \sigma_1\sigma_2\sigma_3<\left(\frac{r-1}{r+1}\right)^4, which makes the modulus vulnerable to Coppersmith's attacks and can lead to the factorization of efficiently where d_1 The asymptotic bound of our attack is greater than the bounds for May \cite{May}, Zheng and Hu \cite{Z}, and Lu et al. \cite{Y} for 2\leq r \leq 10 and greater than Sarkar's \cite{Sarkar1} and \cite{Sarkar} bounds for 5 \leq r \leq10$