ADDRESSING TRUSTED EXECUTION ENVIRONMENT USING ENCRYPTION KEY Russian patent published in 2021 - IPC G06F21/57 G06F21/70 H04L9/08 

FIELD: information protection.

SUBSTANCE: system is made with the possibility to receive a request for protected data from a potentially untrusted requester associated with nested TrEE and conclude on the certification of a secure core, while nested TrEE contains a trusted application executing on top of the secure core, wherein the trusted application is associated with ID of the trusted application, which is based on one of: information for which the trusted application should work, a user of the trusted application and a type of service associated with one of the mentioned request and configuration of the mentioned system; encryption of a transmission encryption key using the second encryption key, which is included in the certification conclusion; extraction of protected data; encryption of protected data using the transmission encryption key and authentication tag, wherein the authentication tag links the requester to ID of the trusted application; and provision of the encrypted transmission encryption key, encrypted protected data and encrypted authentication tag to the requester.

EFFECT: increased security.

20 cl, 14 dwg