New method for encrypting nft's using dynamic key exchange on the blockchain

A method for providing a decentralized marketplace for patient-generated health data, the method comprising:

• a) encrypting the patient-generated health data using a symmetric key;
• b) generating encrypted health data from the encrypting of the patient-generated health data;
• c) sending the encrypted health data to an interplanetary file system (IPFS) with the symmetric key and storing the encrypted health data and the symmetric key on the IPFS;
• d) generating encrypt data with a shared key and providing it to an owner of the patient-generated health data;
• e) creating a non-fungible token (NFT) and listing the NFT for sale on a data marketplace;
• f) facilitating a purchase of the NFT by a purchaser from the data marketplace;
• g) notifying the owner of the purchase;
• h) generating a re-encryption key from the shared key;
• i) re-encrypting the patient-generated health data using the re-encryption key;
• j) generating re-encrypted health data from the re-encrypting of the patient-generated health data;
• k) providing the symmetric key and the re-encrypted health data to the purchaser;
• l) decrypting the re-encrypted health data using the symmetric key;
• m) generating decrypted health data from the decrypting of the re-encrypted health data;
• n) analyzing the decrypted health data;
• o) developing a classification algorithm for disease diagnosis based on the analyzing of the decrypted health data;
• and
• p) diagnosing a disease of a subject using the classification algorithm.

A system for providing a decentralized marketplace for patient-generated health data, the system comprising:

• a processor;
• and
• a machine-readable medium in operable communication with the processor and having instructions stored thereon that, when executed by the processor, perform the following steps:
• a) encrypting the patient-generated health data using a symmetric key;
• b) generating encrypted health data from the encrypting of the patient-generated health data;
• c) sending the encrypted health data to an interplanetary file system (IPFS) with the symmetric key and storing the encrypted health data and the symmetric key on the IPFS;
• d) generating encrypt data with a shared key using a multi-party authentication server and providing it to an owner of the patient-generated health data;
• e) creating a non-fungible token (NFT) and listing the NFT for sale on a data marketplace;
• f) facilitating a purchase of the NFT by a purchaser from the data marketplace;
• g) notifying the owner of the purchase;
• h) sending the shared key to the multi-party authentication server
• i) generating a re-encryption key from the shared key using the multi-party authentication server;
• j) sending the encrypted health data and the symmetric key from the IPFS to a re-encryption oracle;
• k) sending the re-encryption key to the re-encryption oracle from the multi-party authentication server
• l) re-encrypting the patient-generated health data using the re-encryption oracle and the re-encryption key;
• m) generating re-encrypted health data from the re-encrypting of the patient-generated health data;
• n) providing the symmetric key and the re-encrypted health data to the purchaser;
• o) decrypting the re-encrypted health data using the symmetric key;
• p) generating decrypted health data from the decrypting of the re-encrypted health data;
• q) analyzing the decrypted health data;
• r) developing a classification algorithm for disease diagnosis based on the analyzing of the decrypted health data;
• s) diagnosing a disease of a subject using the classification algorithm
• t) encrypting the decrypted health data with the symmetric key;
• u) generating post-use encrypted health data from the encrypting of the decrypted health data;
• and
• v) sending the post-use encrypted health data to the IPFS with the symmetric key and storing the post-use encrypted health data and the symmetric key on the IPFS,
• the NFT being created using a blockchain.