PAYMENT AUTHENTICATION METHOD THROUGH DOUBLE ENCRYPTION AND PAYMENT SERVER PERFORMING SAME

WIPO Patent Application WO/2024/080556

A1

The present invention relates to a product transaction system using an asymmetric key-based payment authentication electronic gift certificate, and a payment authentication method through double encryption, which is performed by a payment server, according to the present invention comprises the steps of: generating a first unique value for payment for a product registered in a store; generating a first encrypted value by encrypting the generated first unique value with a private key; generating and providing the first encrypted value as visualized code according to a predetermined rule; receiving a second encrypted value obtained by encrypting, with a public key, a second unique value extracted by decoding the first encrypted value recognized from the provided code with the public key corresponding to the private key; extracting the second unique value by decrypting the received second encrypted value with the private key; and approving payment by comparing the extracted second unique value with the generated first unique value. According to the present invention, an encrypted authentication step may be performed through a one-way communication step among a payment server, a user terminal, and a store terminal.

OH MYEONG JAE (KR)

PCT/KR2023/013114

April 18, 2024

September 01, 2023

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FLEXDAY INC (KR)

G06Q20/38; G06Q20/04; G06Q20/06; G06Q20/40; H04L9/08

KR20220044933A	2022-04-12
KR20190089861A	2019-07-31
KR20110124929A	2011-11-18
KR20160121231A	2016-10-19
KR20140103019A	2014-08-25

LEE, Jang Hoon (KR)

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