| 摘要 |
FIELD: information technology. ^ SUBSTANCE: invention belongs to the field of data transfer on the basis of peer-to-peer principle and includes the data protection method where the data decrypted by one of the users becomes useless for others. The essence of the method is that the request for a certain content (CT) is sent by the user device (D1, D2,..., Dn) to the request control centre (10), the unique identifier (UA1, UA2,..., UAn) , which unequivocally determines the user device that has sent the request, is also sent to the request control centre, the key (Kn) relating to the specific user device that has sent the request is obtained from the database (14) connected with the request control centre, the sending content (CT)-related check word(s) are defined; the content to be sent (CT) is additionally encrypted by unique methods for each individual user. The encrypted content is then sent to the user request-sending device that has sent the request, and the encrypted check words are also sent to the user request-sending device. ^ EFFECT: enhancement of the encrypted data transfer protection level. ^ 5 cl, 10 dwg |
