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Journal Articles Journal of Discrete Mathematical Sciences and Cryptography Year : 2019

Bitcoin Security with a Twisted Edwards Curve

Abstract

The security of the Bitcoin cryptocurrency system depends on the Koblitz curve secp256k1 combined with the digital signature ECDSA and the hash function SHA-256. In this paper, we show that the security of Bitcoin with ECDSA and secp256k1 is not optimal and present a detailed study of the efficiency of Bitcoin with the digital signature algorithm Ed25519 combined with the twisted Edwards curve CurveEd25519 and the hash function SHA-512. We show that Bitcoin is more secure and more efficient with the digital signature algorithm Ed25519 and the twisted Edwards curve CurveEd25519. Subject Classifications: 94A60
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Dates and versions

hal-02320909 , version 1 (19-10-2019)

Identifiers

  • HAL Id : hal-02320909 , version 1

Cite

Meryem Cherkaoui Semmouni, Abderrahmane Nitaj, Mostafa Belkasmi. Bitcoin Security with a Twisted Edwards Curve. Journal of Discrete Mathematical Sciences and Cryptography, In press. ⟨hal-02320909⟩
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