Methods and systems for secure data exchange

The present invention concerns a computer-implemented method for secure data exchange between a sender (A) and a recipient (B), wherein the method is performed by the sender (A) and comprises encrypting data using a symmetric key k, creating a write transaction T W , wherein the write transaction T W comprises information usable to derive the symmetric key k and an access policy identifying the recipient (B) as being allowed to decrypt the encrypted data, providing the recipient (B) access to the encrypted data, and sending the write transaction T W to a first group of servers (AC) for being stored in a blockchain data structure maintained by the first group of servers (AC).

Alternative title(s) : (fr) Procédés et systèmes pour un échange de données sécurisé
Other identifiers:
EPO Family ID: 61231277
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 Record created 2019-12-05, last modified 2019-12-17

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