Abstract: An example relates to a method for processing data an on smartcard comprising: (i) obtaining a message; (ii) searching for a rule in at least one file of the smartcard based on the message; and (iii) in case the rule was found, executing the rule.

Abstract: A microprocessor circuit for organizing access to data or programs stored in a memory has a microprocessor, a memory for storing an operating system, and a memory for storing individual external programs. A plurality of memory areas with respective address spaces is provided in the memory for storing the external programs. Each address space is assigned an identifier. The identifier assigned to a memory area is loaded into a first auxiliary register prior to the addressing of the memory area and the identifier of the addressed memory area is loaded into a second auxiliary register. A comparison of the contents of the first and second auxiliary registers is performed. Furthermore, each address space of a memory area is assigned at least one bit sequence defining access rights, whereby code instructions and sensitive data can be protected against write accesses from other external programs.

Abstract: In a method of storing a quantity of data in a target memory location, the data quantity is stored first in a non-volatile buffer memory location. It is then examined whether the data are successfully stored in the non-volatile buffer memory location. If the step of examining produces a positive result, the target memory location to which the predetermined quantity of data is to be written is cleared. After the step of clearing of the target memory location, the data are transferred from the non-volatile buffer memory location to the target memory location. To conclude the storage cycle, the non-volatile buffer memory location is then cleared so as to be available for a new storage operation. The effect achieved thereby is a secure and uncomplicated transfer of information from a source memory to the target memory.

Abstract: A microprocessor circuit for organizing access to data or programs stored in a memory has a microprocessor, a memory for storing an operating system, and a memory for storing individual external programs. A plurality of memory areas with respective address spaces is provided in the memory for storing the external programs. Each address space is assigned an identifier. The identifier assigned to a memory area is loaded into a first auxiliary register prior to the addressing of the memory area and the identifier of the addressed memory area is loaded into a second auxiliary register. A comparison of the contents of the first and second auxiliary registers is performed. Furthermore, each address space of a memory area is assigned at least one bit sequence defining access rights, whereby code instructions and sensitive data can be protected against write accesses from other external programs.

Abstract: In a method of storing a quantity of data in a target memory location, the data quantity is stored first in a non-volatile buffer memory location. It is then examined whether the data are successfully stored in the non-volatile buffer memory location. If the step of examining produces a positive result, the target memory location to which the predetermined quantity of data is to be written is cleared. After the step of clearing of the target memory location, the data are transferred from the non-volatile buffer memory location to the target memory location. To conclude the storage cycle, the non-volatile buffer memory location is then cleared so as to be available for a new storage operation. The effect achieved thereby is a secure and uncomplicated transfer of information from a source memory to the target memory.

Abstract: In a method for checking the authenticity of a data medium, in particular a smart card, the encrypted form of a physical feature of the data medium is stored in the data medium. The encrypted form of the feature is transmitted to a terminal, which also measures the physical feature itself. The physical feature is encrypted using a secret key, and is decrypted in the terminal using a public key. Authenticity is confirmed if a comparison of the decrypted feature and the measured feature match. Since the secret key is not contained in either the data medium or the terminal, a high level of security is provided.

Abstract: In order to shorten an access time and thus to shorten the entire data processing time, a sector size of a memory device is adapted to respective applications. Each application is assigned a respective sector. The access right is checked only once for each application.