| 摘要 |
FIELD: information technology.SUBSTANCE: method for securing data and safeguarding their origin comprises the following steps: i) generating and storing an RSA key pair, consisting of the first key (Sa) and the second key (Pa), for signing customer certificates at the centre; ii) generating and storing two RSA key pairs for the customer device, consisting of the third key of the customer device (Sc) and the fourth key of the customer device (Pc), as well as the first key encryption key (St) and the second key encryption key (Pt); iii) generating an encrypted key by encrypting the third key of the customer device (Sc), using the second key encryption key (Pt), and generating a customer certificate at the centre; iv) transmitting the encrypted key and the customer certificate to the customer device; v) sending the first key encryption key (St) to the customer device based on a request by the customer device; vi) decrypting the encrypted key using the first key encryption key (St) in the customer device, the third key of the customer device (Sc) is obtained; vii) encrypting a reordered numerical sequence at the centre using the fourth key of the customer device (Pc); viii) sending the encrypted reordered numerical sequence; ix) decrypting the encrypted reordered numerical sequence in the customer device; x) encrypting the first PIN code input at the customer device, using the third key of the customer device (Sc), to a cipher; xi) sending the cipher and the customer certificate to the centre; xii) decrypting the cipher at the centre, using the fourth key of the customer device (Pc), decrypting the first PIN code input.EFFECT: efficient protection of transmitted data.16 cl, 3 dwg |
