An integrated circuit comprising a secure hardware environment (EMS) in which a unique hardware key (HUK) is stored, said secure hardware environment (EMS) comprising a first logic circuit (GEN1) configured to generate a unique derived key ( HIK) from said unique hardware key (HUK) and at least one item of information (INF) relating to an execution context and / or use of a secret key, and in which the secure hardware environment ( EMS) further comprises a first encryption device (CH1) configured to perform a symmetric encryption operation of said secret key (SK) using said unique derived key (HIK) and deliver an encrypted secret key (E_SK) resulting from this operation outside of the secure hardware environment. Figure for the abstract: Figure 2
展开▼
