US 2021/0240863 A1 · INTEGRATED CIRCUIT CONFIGURED TO PERFORM SYMMETRIC ENCRYPTION OPERATOINS WITH SECRET KEY PROTECTION

Abstract

A unique hardware key is recorded a secure hardware environment. A first logic circuit of the secure hardware environment is configured to generate a unique derived key from said unique hardware key and at least one piece of information. The at least one piece of information relates to one or more of an execution context and a use of a secret key. The secure hardware environment further includes a first encryption device that performs a symmetric encryption of the secret key using the unique derived key. This symmetric encryption generates an encrypted secret key for use outside of the secure hardware environment.

Claims15

Dependent claims

An integrated circuit, comprising:

a secure hardware environment configured to record a unique hardware key and comprising:
a first logic circuit configured to generate a unique derived key from said unique hardware key and at least one piece of information, wherein said at least one piece of information relates to one or more of an execution context and a use of a secret key;
and
a first encryption device configured to perform a symmetric encryption operation of said secret key using said unique derived key and to deliver an encrypted secret key outside the secure hardware environment which results from performance of the symmetric encryption operation.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/161,544Filed 28 Jan 2021

Priority

FR 200099431 Jan 2020

Published

5 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06F 21/72
To assure secure computing or processing of information: in cryptographic circuits
G06F 21/602
Protecting data: providing cryptographic facilities or services
H04L 9/06
Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols: the encryption apparatus…
H04L 9/0866
Generation of secret information including derivation or calculation of cryptographic keys or passwords: involving user or device identifiers,…

Integrated circuit configured to perform symmetric encryption operatoins with secret key protection

Life of this patent

Integrated circuit configured to perform symmetric encryption operatoins with secret key protection

Life of this patent

Abstract

Claims15