Method for OAuth service through blockchain network, and terminal and server using the same

A method for authentication based on a blockchain network, comprising steps of:

• (a) on condition that, after an authentication-supporting server acquires verification-requesting information of a signature value from a certificate authority (CA) app on a user device, wherein the verification-requesting information has been transmitted by the CA app on the user device in response to authentication-requesting information, including a verification value having been acquired from a CA-affiliate app on the user device, the authentication-supporting server performs one of verifying the signature value and supporting a blockchain network to verify the signature value, and after an access token being generated by one of the authentication-supporting server and the blockchain network in response to the valid signature value, the authentication-supporting server has allowed the access token to be registered in distributed ledgers of the blockchain network and transmitted to the user device, which has received and stored the access token using the CA app, then after the authentication-supporting server acquires verification-requesting information of the access token including that the access token is one of acquired from the CA-affiliate server directly and acquired via a CA server, wherein the verification-requesting information of the access token has been transmitted by the CA-affiliate server in response to a login request, including the access token having been acquired from the CA-affiliate app on the user device, the authentication-supporting server performing one of:
• (i) one of verifying the access token and supporting another device to verify the access token, and
• (ii) one of transmitting a verification request and supporting another device to transmit the verification request for verifying the access token to the blockchain network, which verifies the access token;
• and
• (b) the authentication-supporting server, in response to the access token determined as valid, performing one of transmitting verification-result information of the access token to the CA-affiliate server and supporting one of another device and the CA server to transmit the verification-result information of the access token to the CA-affiliate server, which allows the CA-affiliate app to log in to the CA-affiliate server, in response to the verification-result information of the access token determined as valid.

An authentication-supporting server for authentication based on a blockchain network, comprising:

• a memory that stores instructions;
• and
• a processor configured to execute the instructions to one of perform and support another device to perform processes of:
• (I) performing either of a process (i) and a process (ii) after the authentication-support server acquires verification-requesting information of a signature value from a certificate authority (CA) app on a user device, wherein the verification-requesting information has been transmitted by the CA app on the user device in response to authentication-requesting information, including a verification value for reference having been acquired from a CA-affiliate app on the user device, and wherein the verification-requesting information of the signature value includes the verification value for reference and the signature value created by signing the verification value for reference with a private key of the CA app, wherein the process (i) includes:
• (i-1) one of verifying the signature value and supporting another device to verify the signature value,
• (i-2) in response to the signature value determined as valid, generating an access token,
• (i-3) one of transmitting the access token to the user device and supporting another device to transmit the access token to the user device, which receives and stores the access token using the CA app,
• (i-4) supporting the CA-affiliate app to transmit a login request to a CA-affiliate server using the access token, and
• (i-5) one of registering the access token and supporting another device to register the access token in distributed ledgers of the blockchain network, and wherein the process (ii) includes:
• (ii-1) one of transmitting a verification request and supporting another device to transmit the verification request for verifying the signature value to the blockchain network,
• (ii-2) instructing the blockchain network, in response to the signature value determined as valid, to generate the access token, to transmit the access token to the authentication-supporting server, and to register the access token in distributed ledgers of the blockchain network, and
• (ii-3) one of transmitting the access token and supporting another device to transmit the access token, in response to the access token acquired from the blockchain network to the user device, which receives and stores the access token using the CA app, and
• (ii-4) supporting the CA-affiliate app to transmit the login request to the CA-affiliate server using the access token, and
• (II) the processor, in response to receiving verification-requesting information of the access token including that the access token was acquired from the CA-affiliate server one of directly and via the CA server,
• (II-1) performing one of:
• (i) one of verifying the access token and supporting another device to verify the access token, and
• (ii) one of transmitting the verification request and supporting another device to transmit the verification request for verifying the access token to the blockchain network, which verifies the access token, and
• (II-2) in response to the access token determined as valid by one of the authentication-supporting server and the blockchain network, performing one of transmitting verification-result information of the access token to the CA-affiliate server and supporting one of another device and the CA server to transmit the verification-result information of the access token to the CA-affiliate server, which allows the CA-affiliate app to log in to the CA-affiliate server, in response to the verification-result information of the access token determined as valid.

An authentication-supporting server for authentication based on a blockchain network, comprising:

• a memory that stores instructions;
• and
• a processor configured to execute the instructions to one of perform and support another device to perform processes of:
• (I) on condition that, after an authentication-supporting server acquires verification-requesting information of a signature value from a certificate authority (CA) app on a user device, wherein the verification-requesting information has been transmitted by the CA app on the user device in response to authentication-requesting information, including a verification value having been acquired from a CA-affiliate app on the user device, the authentication-supporting server performs one of verifying the signature value and supporting a blockchain network to verify the signature value, and that after an access token being generated by one of the authentication-supporting server and the blockchain network in response to the valid signature value, the authentication-supporting server has allowed the access token to be registered in distributed ledgers of the blockchain network and transmitted to the user device, which has received and stored the access token using the CA app, then after the authentication-supporting server acquires verification-requesting information of the access token including that the access token acquired from one of the CA-affiliate server directly and acquired via a CA server, wherein the verification-requesting information of the access token has been transmitted by the CA-affiliate server in response to a login request, including the access token having been acquired from the CA-affiliate app on the user device, performing one of:
• (i) one of verifying the access token and supporting another device to verify the access token, and
• (ii) one of transmitting a verification request and supporting another device to transmit the verification request for verifying the access token to the blockchain network, which verifies the access token, and
• (II) the processor, in response to the access token determined as valid, performing one of transmitting verification-result information of the access token to the CA-affiliate server and supporting one of another device and the CA server to transmit the verification-result information of the access token to the CA-affiliate server, which allows the CA-affiliate app to log in to the CA-affiliate server, in response to the verification-result information of the access token determined as valid.