Patents by Inventor Paulo SERGIO ALVES MARTINS

Paulo SERGIO ALVES MARTINS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic payment method and electronic device using ID-based public key cryptography
    Patent number: 11182783
    Abstract: Provided are an electronic payment method and an electronic device using identity-based public key cryptography. The electronic payment method includes receiving, from a key management service (KMS) server that stores personal information of a user, a private key of the user generated according to an Identity-based public key cryptography (IDPKC) protocol; encrypting payment information by using a public key of a payment device being generated according to the IDPKC protocol, and encrypting order information by using a public key of a seller device being generated according to the IDPKC protocol; producing, according to the IDPKC protocol, a dual signature of the encrypted payment information and the encrypted order information by using the private key; transmitting a transaction request including the dual-signed payment information and the dual-signed order information to the seller device; and receiving a response to the transaction request from the seller device.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: November 23, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Parashuram Chawan, Paulo Sergio Alves Martins
  • ELECTRONIC PAYMENT METHOD AND ELECTRONIC DEVICE USING ID-BASED PUBLIC KEY CRYPTOGRAPHY
    Publication number: 20190139039
    Abstract: Provided are an electronic payment method and an electronic device using identity-based public key cryptography. The electronic payment method includes receiving, from a key management service (KMS) server that stores personal information of a user, a private key of the user generated according to an Identity-based public key cryptography (IDPKC) protocol; encrypting payment information by using a public key of a payment device being generated according to the IDPKC protocol, and encrypting order information by using a public key of a seller device being generated according to the IDPKC protocol; producing, according to the IDPKC protocol, a dual signature of the encrypted payment information and the encrypted order information by using the private key; transmitting a transaction request including the dual-signed payment information and the dual-signed order information to the seller device; and receiving a response to the transaction request from the seller device.
    Type: Application
    Filed: August 22, 2016
    Publication date: May 9, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Parashuram CHAWAN, Paulo SERGIO ALVES MARTINS