DATA PROTECTION WITH TRANSLATION Russian patent published in 2017 - IPC G06Q20/38 G06F21/60 

FIELD: information technology.

SUBSTANCE: method of protecting data, associated with the transaction, containing the stages at which: personal identification number (PIN) and sensitive data, including account identifier, are received through access devices; PIN is encrypted by access device. PIN encryption uses the first version of encryption key, based on seed key; sensitive data, including account identifier, is encrypted through access device. Encrypted account identifier has the same format as account identifier, and subset of numbers of encrypted account identifier represents the encrypted numbers of account identifier; the encrypted account identifier is written in the field of authorization request message. Field is used to receive account identifier; element of authorization request message data is used as a signal to identify the existence of encrypted account identifier in authorization request message; and authorization request message, including encrypted PIN and encrypted sensitive data, is transmitted to host server.

EFFECT: providing a mechanism for transfer and routing encrypted identifier, account number through network of processing without the need to update existing routing infrastructure to handle encrypted values, that improves identifier security, account number, as identifier, account number can remain encrypted until the authorization request message passes through the nodes of network.

32 cl, 9 dwg