Abrégé

A method for authentication based on a blockchain network is provided. The method includes steps of: an authentication-supporting server (a) if verification is requested by a certificate authority (CA) app, verifying a signature value and transmitting an access token to a user device, supporting the CA-affiliate app to transmit a login request to a CA-affiliate server, and registering the access token in the blockchain network, and transmitting a verification request to the blockchain network to transmit the access token to the authentication-supporting server, and register the access token in the blockchain network, and transmitting the access token to the user device, and transmit the login request to the CA-affiliate server, and (b) performing one of (i) verifying the access token, and (ii) transmitting the verification request to the blockchain network, and transmitting a verification-result to the CA-affiliate server, to allow the CA-affiliate app to log in to the CA-affiliate server.

Classes IPC  ?

• H04L 9/32 - Dispositions pour les communications secrètes ou protégées; Protocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
• G06F 21/33 - Authentification de l’utilisateur par certificats
• G06F 21/41 - Authentification de l’utilisateur par une seule ouverture de session qui donne accès à plusieurs ordinateurs
• H04L 9/30 - Clé publique, c. à d. l'algorithme de chiffrement étant impossible à inverser par ordinateur et les clés de chiffrement des utilisateurs n'exigeant pas le secret
• H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés

Abrégé

A method for a Single Sign On (SSO) service using a Public Key Infrastructure (PKI) based on blockchain networks, and device and server using the same are provided. The method has objects and effects of providing (a) the SSO based on blockchain network technology to efficiently protect authentication information on users from external attacks, (b) the SSO assuring information security and preventing forgery by applying a hash function and encryption to user certificates, and (c) the SSO preventing problems incurred by information theft beforehand through a user-authentication using disposable verification values.

Classes IPC  ?

• H04L 9/32 - Dispositions pour les communications secrètes ou protégées; Protocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
• G06F 21/33 - Authentification de l’utilisateur par certificats
• G06F 21/41 - Authentification de l’utilisateur par une seule ouverture de session qui donne accès à plusieurs ordinateurs
• H04L 9/30 - Clé publique, c. à d. l'algorithme de chiffrement étant impossible à inverser par ordinateur et les clés de chiffrement des utilisateurs n'exigeant pas le secret
• H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés

Abrégé

The present invention relates to a method for issuing a currency comprising the steps of: (a) confirming the validity of a currency issuing transaction and a currency issuer, when the currency issuing transaction for issuing the currency from the currency issuer is obtained, the currency issuing transaction including (i) currency receiver information, (ii) issued amount of the currency, (iii) a public key of the currency issuer, and (iv) a signature value of the currency issuer signing the (i), (ii), and (iii) with a private key of the currency issuer; and (b) registering the currency issuing transaction or a hash value thereof on a public blockchain database, and obtaining a currency issuance public transaction ID indicating location information of the currency issuing transaction or the hash value thereof on the public blockchain database, when the currency issuing transaction and the currency issuer are deemed valid.

Classes IPC  ?

• G06Q 20/36 - Architectures, schémas ou protocoles de paiement caractérisés par l'emploi de dispositifs spécifiques utilisant des portefeuilles électroniques ou coffres-forts électroniques
• G06Q 20/06 - Circuits privés de paiement, p.ex. impliquant de la monnaie électronique utilisée uniquement entre les participants à un programme commun de paiement
• G06Q 20/38 - Architectures, schémas ou protocoles de paiement - leurs détails
• G06Q 40/04 - Transactions; Opérations boursières, p.ex. actions, marchandises, produits dérivés ou change de devises

Abrégé

Provided in the present invention is a method comprising the steps of: (a) confirming the validity of a currency issuing transaction and a currency issuer when the currency issuing transaction for issuing currency from the currency issuer is obtained, the currency issuing transaction including (i) a specific unique nonce, (ii) a receiver of the currency, (iii) issued amount of the currency, (iv) a public key of the currency issuer, and (v) a signature value of the currency issuer signing the (i), (ii), (iii), and (iv) with a private key of the currency issuer, and if valid, registering the currency issuing transaction on a private BCDB, wherein registering includes updating a balance database by referencing the amount of change in the balance due to the issued amount of the currency, included in the currency issuing transaction; and (b) registering, on the public BCDB, a specific representative hash value generated by calculating at least one associated neighboring hash value that matches the specific hash value, when a specific condition is satisfied.

Classes IPC  ?

• G06Q 20/06 - Circuits privés de paiement, p.ex. impliquant de la monnaie électronique utilisée uniquement entre les participants à un programme commun de paiement
• G06Q 20/38 - Architectures, schémas ou protocoles de paiement - leurs détails
• G06F 16/27 - Réplication, distribution ou synchronisation de données entre bases de données ou dans un système de bases de données distribuées; Architectures de systèmes de bases de données distribuées à cet effet

Abrégé

The present invention provides a method for issuing an electronic voucher, the method comprising: (a) a step in which a server checks whether or not (i) electronic voucher data, (ii) a public key of a specific issuer and (iii) a signature value of the specific issuer are valid; and (b) a step in which, if the validity check result is positive, the server registers or supports the registration of a hash value associated with (i) the electronic voucher data, (ii) the public key of the specific issuer and (iii) the signature value of the specific issuer in a public blockchain database, and acquires or supports the acquisition of Txid indicating information on the location of the hash value, registered in the public blockchain database, within the public blockchain database.

Classes IPC  ?

• G06Q 20/38 - Architectures, schémas ou protocoles de paiement - leurs détails
• G06Q 30/04 - Facturation