2020Unpublished venueRequires access

The Discrete Logarithm Problem on Supersingular Elliptic Curves

Roelien Smit

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Abstract

The elliptic curve discrete logarithm problem is an essential problem in cryptography. In general it is a very complex problem; the best known solving algorithms all have exponential running time. However, for supersingular elliptic curves there exists a sub-exponential solving algorithm called the MOV attack. The MOV attack reduces an elliptic curve discrete logarithm to a logarithm over a finite field using the Weil pairing. The discrete logarithm problem in a finite field can be solved efficiently using Index Calculus. This thesis deals with analyzing the MOV attack and generating examples to demonstrate its power.

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What this paper is about

The elliptic curve discrete logarithm problem is an essential problem in cryptography. In general it is a very complex problem; the best known solving algorithms all have exponential running time. However, for supersingular elliptic curves there exists a sub-exponential solving algorithm called the MOV attack. The MOV attack reduces an elliptic curve discrete logarithm to a logarithm over a finite field using the Weil pairing. The discrete logarithm problem in a finite field can be solved efficiently using Index Calculus. This thesis deals with analyzing the MOV attack and generating examples to demonstrate its power.

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Available abstract

The elliptic curve discrete logarithm problem is an essential problem in cryptography. In general it is a very complex problem; the best known solving algorithms all have exponential running time. However, for supersingular elliptic curves there exists a sub-exponential solving algorithm called the MOV attack. The MOV attack reduces an elliptic curve discrete logarithm to a logarithm over a finite field using the Weil pairing. The discrete logarithm problem in a finite field can be solved efficiently using Index Calculus. This thesis deals with analyzing the MOV attack and generating examples to demonstrate its power.

Key concepts: Discrete logarithm, Logarithm, Supersingular elliptic curve, Counting points on elliptic curves, Mathematics, Elliptic curve, Schoof's algorithm, Finite field

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