Abstract: For securing the data areas of a memory in an electronic component, said component is able to modify said data areas. A method includes a single backup memory of data areas including means of reference of the data to be secured, and means of backing up information on said data areas.

Abstract: An assembly comprises an integrated circuit card capable (2) of communicating data in a contactless fashion. The assembly further comprises a case (32) for the integrated circuit card. The case has an electrical circuit (14, 16) which, when the integrated circuit card is inside the case, is electrically coupled to the integrated circuit card so as to prevent the integrated circuit card from communicating data in a contactless fashion.

Abstract: This invention concerns a smartcard (CAR), wherein it comprises at least one module (TIM) external to the operating system to manage the triggering of byte transmission. The external module (TIM) acts as assistant by monitoring the operating system. In its role as assistant, it can force the operating system to trigger byte transmission. Consequently, the inter-byte time intervals are better respected so that the reader can communicate with the smartcard. When these time intervals are not respected, the reader fails to recognise the card. The invention therefore avoids ejection of the card.

Abstract: Method for the creation of at least one random value by a module (4) associated with a microprocessor (2) designed to execute successively at least one processing operation and one protection operation, the protection operation using the random value, the method including the following steps:

Abstract: The invention concerns a device to secure the data areas of a memory in an electronic component, the said component being able to modify the said data areas.

Abstract: A data processor, such as, for example, a smart card, comprises a controller for managing a file wherein a plurality of records can be stored in a sequential fashion. The controller checks whether a record has correctly been written into the file. The controller prevents user-related software from reading the record that is subsequent to the last record that has correctly been written.

Abstract: An assembly comprises an integrated circuit card capable (2) of communicating data in a contactless fashion. The assembly further comprises a case (32) for the integrated circuit card. The case has an electrical circuit (14, 16) which, when the integrated circuit card is inside the case, is electrically coupled to the integrated circuit card so as to prevent the integrated circuit card from communicating data in a contactless fashion.

Abstract: A write command comprises a definition of a memory zone (ZN) followed by data to be stored in that memory zone. Such a write command may be, for example, a write command in accordance with ISO 7816 standard relating to smart cards. The write command is processed in the following manner. In a receiving step (F4), the data is written into a buffer memory (RAM). In an erasure step (F3), the memory zone (ZN) defined by the write command is erased while the data is written into the buffer memory (RAM). Thus, the receiving step (F4) and the erasure step (F3) are, at least partially, effected in parallel. In a transfer step (F7), the data is transferred from the buffer memory (RAM) to the memory zone (ZN) defined by the write command.