PROTECTION OF THESE BLOCK CHAINS USING HOMOMORPHIC ENCRYPTION Russian patent published in 2019 - IPC H04N19/00 

FIELD: data processing.

SUBSTANCE: present invention relates to networks of block chains. Method comprises: receiving, by a consensus node from a first account, a digitally signed digit of a transaction amount identity value, a second random number encrypted using a public key of the first account, a third random number encrypted using a public key of the second count, one or more proofs by a range and a set of values generated based on one or more selected random numbers. Consensus node verifies the digital signature using the public key of the first account corresponding to the private key used to generate the digital signature. It also updates the balance of the first account and the balance of the second account based on the balance transfer amount if the first random number, the second random number and the third random number are identical.

EFFECT: technical result consists in improvement of data security of a mobile computing device.

12 cl, 8 dwg