INTEGRATED CIRCUIT CONFIGURED TO PERFORM SYMMETRICAL ENCRYPTION OPERATIONS WITHOUT SECRET KEY TRANSMISSION

摘要

The invention relates to an integrated circuit comprising a secure hardware environment (EMS) comprising: - a first input for receiving a key number (IV), - a key generation device (SK_GEN2) for generating a secret key (SK) to from the key number (IV) and a unique key (HUK), - a signature generation device (TAG_GEN2) associated with the key number (IV), - a second input to receive encrypted binary data (E_DAT) , - a decryption device (DCH) configured to decrypt said encrypted binary data (E_DAT) using the secret key (SK), - a third input configured to receive an authentication signature (EXP_TAG), - an authentication device (AUT) configured to authorize the use of the secret key (SK) to decrypt said encrypted binary data (E_DAT) if the signature (TAG) generated by the signature generation device (TAG_GEN2) is identical to the authenticator signature cation (EXP_TAG). Figure for the abstract: Figure 4