Patent ID: 11882101
Assignee: INFINEON TECHNOLOGIES AG
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. A communication device comprising
a communication interface and
a processor configured to
generate a blinding value sr for a first private key component and a blinding value er for a second private key component wherein the blinding value sr for the first private key component is a value to be combined with the first private key component to mask the first private key component and wherein the blinding value er for the second private key component is a value to be combined with the second private key component to mask the second private key component;
generate a blinded public key from the first private key component, the second private key component, the blinding value sr for the first private key component and the blinding value er for the second private key component using a public key generation function;
transmit the blinded public key to another communication device by means of the communication interface for encryption of a shared secret generated by the other communication device;
receive the shared secret from the other communication device by means of the communication interface;
generate a session key for encrypted communication with the other communication device from the shared secret
encrypt, using the session key, an information from which the blinding value sr for the first private key component and the blinding value er for the second private key component are derivable by the other communication device; and
transmit the encrypted information to the other communication device by means of the communication interface.