Post quantum signature schemes for the block chain technology

Wu, Zi Feng (2019) Post quantum signature schemes for the block chain technology. Master dissertation/thesis, UTAR.

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Abstract

Blockchain technology is a booming topic since the invention of cryptocurrency which relies on the security of signature schemes. However a quantum computer is believed to be able to break all security models that are number theory based. This may cause the blockchain technology to lose its security and cryptocurrencies to lose all values if quantum computers were to be released to the public. The purpose of this study is to construct a suitable signature scheme for the blockchain technology that is quantum resistant, since conventional security models were proven to be easily broken by using quantum algorithm. First we study the different properties and uses of signature schemes, and how Elliptic Curve Digital Signature Algorithm is used in the blockchain technology. Then we review previous researches on latticebased signature schemes to construct our own scheme which is suitable for the blockchain technology. Finally we show that our scheme is possibly usable for the security in quantum computers.

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