System and method using trusted authorization mechanism based on polynomial commitment multiple access for data exchange

A system using trusted authorization mechanism based on polynomial commitment multiple access (PCMA) for data exchange, comprising:

• a data owner module electrically or wirelessly coupled for data communication with an owner terminal and configured to encrypt a data collection comprising multiple datasets of the owner terminal by using an encryption key and to generate an identifier and a hash value for each of the datasets;
• a data user module electrically or wirelessly coupled for data communication with a user terminal and configured to submit at least one request from the user terminal to the data owner module for evaluating the datasets, wherein the data owner module is further configured to check the request from the data user module, authorizing at least one of the datasets of the data collection or rejecting any request without authorizing any one of the requested datasets of the data collection;
• and
• a data exchange module electrically or wirelessly coupled for data communication with a data exchange center and configured to generate a single PCMA token based on the user's identity, which is registered in the data exchange module, the identifiers of the datasets, and the hash values of the authorized datasets, wherein the data exchange module constructs the PCMA token using a polynomial commitment mechanism, which allows it to maintain a constant size regardless of the number of data authorizations it represents, and wherein the data exchange module leverages a commitment algorithm of the polynomial commitment mechanism as a cryptographic protocol for the PCMA token, so as to ensure that any potentially sensitive raw information used to construct the PCMA token is free from feasibly deriving from it;
• wherein the data exchange module is further configured to send the PCMA token to the data user module for submission by the user terminal when requesting for data evaluation.