FIELD: information technology.
SUBSTANCE: invention relates to handling of sensitive data. Integrated circuitry for secure data exchange, comprising: a persistent memory area for storing sensitive data; data transfer means for receiving sensitive data from at least one connected device, wherein said persistent memory area is adapted to store sensitive data received through said data transfer means, and wherein said data transfer means is adapted for sending sensitive data stored in persistent memory area to at least one connected device, cryptographic means for decrypting sensitive data received from at least one connected device, and encrypting sensitive data stored in persistent memory area, based on a symmetrical cryptographic method using an active secure key and key generator for initiating generation of a new secure key after power up, to replace active secure key.
EFFECT: higher safety of stored sensitive data so that hacker attacks on sensitive data stored in persistent memory, can be successfully prevented.
14 cl, 7 dwg
