Abstract: The invention relates to a license-verification circuit for selectively activating one or more protected circuits (206) of a device (102) the license-verification circuit being capable of: deducing a device key from an identifier associated with the device (102); receiving a first license; decrypting the first license using the device key in order to extract a first verification code activating a first protected circuit by loading an activation code in an activation log (212) associated with the first protected circuit on the basis of a verification of the first verification code.