METHOD AND SYSTEM FOR PROTECTED EXCHANGE OF DATA

摘要

A result of application of a test to information about a user (U) is securely transmitted between a source of information (A) and a destination of information (B) via an intermediary device (C). The source of information can be, for example, a database of personal data, and the destination of information (B) a server of a service provider performing services depending on an age limit. The intermediary device (C) minimizes the information that is made available to the source (A) and the destination (B) about the purpose of the test and the underlying data. To this end, the intermediary device (C) executes a secure comparison protocol with the source (A), whereby the encrypted result is additionally blinded, for example, with a blinding that comes from the user. The intermediary device (C) decrypts the blinded encrypted result, so that a blinded result is left. The destination B removes the blinding, preferably on the basis of blinding information of the user. The intermediary device (C) preferably sends the blinded comparison result to the user (U).

主权项

1. A method for secure transmission of information between a source of information (A) and a destination of information (B), wherein
an intermediary device (C) between the source of information (A) and the destination of information (B) executes a secure comparison protocol with the source of information (A) for obtaining an encrypted comparison result, blinded by the source of information (A), about the user (U); the intermediary device (C) decrypts the blinded, encrypted comparison result for obtaining the blinded comparison result.