公开(公告)号：US20060107133A1

公开(公告)日：2006-05-18

申请号：US11213574

申请日：2005-08-26

申请人： Holger Ceskutti ,  Robert Seyfang ,  Norbert Loechel ,  Bernd Rieth ,  Andre Borchert

发明人： Holger Ceskutti ,  Robert Seyfang ,  Norbert Loechel ,  Bernd Rieth ,  Andre Borchert

IPC分类号： G11C29/00

CPC分类号： G06F21/71 ,  G06F21/57 ,  G06F2221/2107

摘要： A tampering-protected microprocessor system includes a microprocessor, an internal write/read memory integrated with the microprocessor into a common module, and a second memory in which at least a portion of an operating program to be executed by the microprocessor is stored. At least one procedure of the operating program which is indispensable for the function of the microprocessor system is stored in encrypted form in the external memory. The operating program includes a decryption procedure which decrypts each encrypted procedure of the operating program and stores it in the internal write/read memory. The indispensable procedure, in order to function properly, requires a successful execution of an integrity test procedure which tests the integrity of at least a portion of the operating program.

摘要翻译： 篡改保护的微处理器系统包括微处理器，将微处理器集成到公共模块中的内部写入/读取存储器以及存储由微处理器执行的操作程序的至少一部分的第二存储器。 对于微处理器系统的功能不可或缺的操作程序的至少一个程序以加密形式存储在外部存储器中。 操作程序包括一个解密程序，它对操作程序的每个加密过程进行解密并将其存储在内部写/读存储器中。 为了正常运行，不可或缺的过程需要成功执行完整性测试程序，该程序测试操作程序的至少一部分的完整性。