Abstract: The invention relates to a method and a system for secure execution of virtual machines by a set of interconnected programmable devices, each including at least one processor, each programmable device being able to execute applications of a plurality of virtual machines and including a hardware portion for standard security level execution and a secure hardware portion for a security level higher than the standard security level. The method includes storing at least one secure execution environment (TEEi) associated with each virtual machine. Following a request for secure execution of a series of instructions of an application by a requesting virtual machine, it comprises allocating said secure execution at least one available secure hardware portion belonging to one of the interconnected processors, loading the secure execution environment (TEE1) associated with the requesting virtual machine (VM1) in the allocated secure hardware portion(s).

Abstract: A multimedia content processing device for processing multimedia contents implementing a plurality of virtual machines is provided. The device is able to receive encrypted multimedia content, protected by a content protection system, and provide the multimedia content in decrypted form to a user device, including an access controller authorizing the provision of the decrypted multimedia content to the user device, a first securer for executing security services having a first associated level of security and a second securer for executing services having an associated level of security lower than the first level of security.

Abstract: A multimedia content processing device for processing multimedia contents implementing a plurality of virtual machines is provided. The device is able to receive encrypted multimedia content, protected by a content protection system, and provide the multimedia content in decrypted form to a user device, including an access controller authorizing the provision of the decrypted multimedia content to the user device, a first securer for executing security services having a first associated level of security and a second securer for executing services having an associated level of security lower than the first level of security.

Abstract: The invention concerns the sharing and the controlling of access to at least one peripheral for a computer system which includes a central processing unit and at the least one peripheral which has a physical interface to the central processing unit. Specifically, a request for access is received at an address of a virtual interface, where the address of the virtual interface corresponds to the physical interface, and data is exchanged between the central processing unit and the at least one peripheral is received. The received data is modified according to at least one predetermined criterion corresponding to the address of the virtual interface.

Abstract: The invention concerns a device for sharing and controlling access to peripherals for a computer system comprising a central processor (3) and at least one input/output peripheral (6, 9, 10) having a physical control interface (6A, 9A, 10A) accessible to the central processor (3),