公开(公告)号：GB2575609B

公开(公告)日：2020-06-17

申请号：GB201916247

申请日：2018-04-10

Applicant: IBM

Inventor： ANJA LEHMANN ,  MICHAEL CHARLES OSBORNE ,  MARCUS OESTREICHER

IPC: G06F21/00

Abstract: A data-source computer provides message data, having associated id data, to be sent to a data-collection computer; produces a blinded id by blinding the id data using a nonce; sends the blinded id to a tokenization computer; and sends the nonce and the message data via a network for receipt by the data-collection computer. In response, the tokenization computer produces a blinded token comprising a function, blinded with the nonce, of the id data and a secret key of the tokenization computer, and sends the blinded token to the data-collection computer. The data-collection computer, in response, uses the nonce to unblind the blinded token to obtain an id token which comprises a deterministic function of the id data and the secret key. The data-collection computer then stores the id token and the message data in storage operatively coupled to the data-collection computer.

公开(公告)号：GB2575609A

公开(公告)日：2020-01-15

申请号：GB201916247

申请日：2018-04-10

Applicant: IBM

Inventor： ANJA LEHMANN ,  MICHAEL CHARLES OSBORNE ,  MARCUS OESTREICHER

IPC: G06F21/00

Abstract: A data-source computer provides message data, having associated id data, to be sent to a data-collection computer; produces a blinded id by blinding the id data using a nonce; sends the blinded id to a tokenization computer; and sends the nonce and the message data via a network for receipt by the data-collection computer. In response, the tokenization computer produces a blinded token comprising a function, blinded with the nonce, of the id data and a secret key of the tokenization computer, and sends the blinded token to the data-collection computer. The data-collection computer, in response, uses the nonce to unblind the blinded token to obtain an id token which comprises a deterministic function of the id data and the secret key. The data-collection computer then stores the id token and the message data in storage operatively coupled to the data-collection computer.