To examine the computational complexity of cryptographic primitives such as the discrete logarithm problem, the factoring problem and the Diffie-Hellman problem, we define a new problem called square-root exponent, which is a problem to compute a value whose discrete logarithm is a square root of the discrete logarithm of a given value. We analyze reduction between the discrete logarithm problem modulo a prime and the factoring problem through the square-root exponent. We also examine reductions among the computational version and the decisional version of the square-root exponent and the Diffie-Hellman problem and show that the gap between the computational square-root exponent and the decisional square-root exponent partially overlaps with the gap between the computational Diffie-Hellman and the decisional Diffie-Hellman under some condition.
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Chisato KONOMA, Masahiro MAMBO, Hiroki SHIZUYA, "Complexity Analysis of the Cryptographic Primitive Problems through Square-Root Exponent" in IEICE TRANSACTIONS on Fundamentals,
vol. E87-A, no. 5, pp. 1083-1091, May 2004, doi: .
Abstract: To examine the computational complexity of cryptographic primitives such as the discrete logarithm problem, the factoring problem and the Diffie-Hellman problem, we define a new problem called square-root exponent, which is a problem to compute a value whose discrete logarithm is a square root of the discrete logarithm of a given value. We analyze reduction between the discrete logarithm problem modulo a prime and the factoring problem through the square-root exponent. We also examine reductions among the computational version and the decisional version of the square-root exponent and the Diffie-Hellman problem and show that the gap between the computational square-root exponent and the decisional square-root exponent partially overlaps with the gap between the computational Diffie-Hellman and the decisional Diffie-Hellman under some condition.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e87-a_5_1083/_p
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@ARTICLE{e87-a_5_1083,
author={Chisato KONOMA, Masahiro MAMBO, Hiroki SHIZUYA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Complexity Analysis of the Cryptographic Primitive Problems through Square-Root Exponent},
year={2004},
volume={E87-A},
number={5},
pages={1083-1091},
abstract={To examine the computational complexity of cryptographic primitives such as the discrete logarithm problem, the factoring problem and the Diffie-Hellman problem, we define a new problem called square-root exponent, which is a problem to compute a value whose discrete logarithm is a square root of the discrete logarithm of a given value. We analyze reduction between the discrete logarithm problem modulo a prime and the factoring problem through the square-root exponent. We also examine reductions among the computational version and the decisional version of the square-root exponent and the Diffie-Hellman problem and show that the gap between the computational square-root exponent and the decisional square-root exponent partially overlaps with the gap between the computational Diffie-Hellman and the decisional Diffie-Hellman under some condition.},
keywords={},
doi={},
ISSN={},
month={May},}
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TY - JOUR
TI - Complexity Analysis of the Cryptographic Primitive Problems through Square-Root Exponent
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1083
EP - 1091
AU - Chisato KONOMA
AU - Masahiro MAMBO
AU - Hiroki SHIZUYA
PY - 2004
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E87-A
IS - 5
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - May 2004
AB - To examine the computational complexity of cryptographic primitives such as the discrete logarithm problem, the factoring problem and the Diffie-Hellman problem, we define a new problem called square-root exponent, which is a problem to compute a value whose discrete logarithm is a square root of the discrete logarithm of a given value. We analyze reduction between the discrete logarithm problem modulo a prime and the factoring problem through the square-root exponent. We also examine reductions among the computational version and the decisional version of the square-root exponent and the Diffie-Hellman problem and show that the gap between the computational square-root exponent and the decisional square-root exponent partially overlaps with the gap between the computational Diffie-Hellman and the decisional Diffie-Hellman under some condition.
ER -