Patent ID: 11949775
Assignee: RED HAT, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. The method of claim 1, wherein deriving the cryptographic key comprises deriving a decryption key to decrypt the sensitive data, wherein the deriving of the decryption key comprises:
accessing, by the trusted execution environment, the cryptographic key data of the second computing device that comprises a first public asymmetric key;
obtaining, by the trusted execution environment, an ephemeral asymmetric key pair comprising a second public asymmetric key and a second private asymmetric key;
generating the combined key data that is transmitted to the third computing device, wherein the combined key data comprises a first combined key data that is based on the first public asymmetric key and the second public asymmetric key;
receiving a second combined key data from the third computing device, wherein the second combined key data is based on the first combined key data and a private asymmetric key of the third computing device; and
generating, by the trusted execution environment, the decryption key in view of the received second combined key data, wherein generating the decryption key uses the second private asymmetric key to separate the second public asymmetric key from the second combined key data.