Patent ID: 9246886
Filing Date: 2016-01-26
CPC Classification: G06F,H04L

Claim Text:
1. An integrated circuitry to securely exchange data with another integrated circuitry, comprising: a persistent memory area to store sensitive data; a data transferer to receive the sensitive data from a trust zone of the other integrated circuitry, wherein said persistent memory area is adapted to store the sensitive data received through said data transferer, and wherein said data transferer is adapted to send the sensitive data stored in the persistent memory area to the trust zone of the other integrated circuitry; a cryptographic engine to decrypt the sensitive data received from the other integrated circuitry and encrypt the sensitive data to be sent and stored in the persistent memory area based on a symmetrical crypto method using an active secure key; wherein the integrated circuitry is separated from the other integrated circuitry, and wherein a trust zone separate from the trust zone of the other integrated circuitry is formed by the integrated circuitry, the said trust zone of the integrated circuitry comprising a key generator to generate a new secure key after power up in order to replace the active secure key.