Method of and apparatus for reproducing information, and security module
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Abstract
An information reproducing apparatus of the present invention includes a secure module and a main memory. The information in the secure module can not be accessed from outside. The secure module reads, using a direct access method, information relating to software stored in the main memory. The secure module checks a falsification of the software by comparing the information read with the information stored in advance in the secure module.
45 Citations
42 Claims
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1-40. -40. (canceled)
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41. An information reproducing apparatus, comprising:
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a secure module that stores a first information, wherein the secure module can not be accessed from outside the information reproducing apparatus;
a memory that stores a second information in an unswappable area thereof, wherein the memory can be accessed from outside the information reproducing apparatus;
a falsification checking unit that is loaded on the secure module, wherein the falsification checking unit is arranged to read the second information from the memory by direct access, to compares the second information with the first information in the secure module, and to check a falsification of the second information based on a result of the comparison; and
a writing unit that is loaded on the secure module, wherein the writing unit writes secret information stored in the secure module into the memory as the second information using a direct access method, wherein the falsification checking unit checks falsification of the second information based on response information corresponding to the secret information, the secret information is stored in a controlled memory space, and the controlled memory space is such that information is read out from the controlled memory space at a first time and a different information is read out at a second time.
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42. A secure module mounted to an information reproducing apparatus, comprising:
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a reading unit for reading a second information from an unswappable area in a memory mounted to the information reproducing apparatus, by direct access, the memory can being accessible from outside the information reproducing apparatus;
a falsification checking unit that compares the second information with a first information stored in the secure module, the first information being not accessible from outside the information reproducing apparatus, and checks a falsification of the second information based on a result of the comparison; and
a writing unit that writes secret information stored within the secure module into the memory as the second information using a direct access method, wherein the falsification checking unit checks falsification of the second information based on response information corresponding to the secret information, the secret information is stored in a controlled memory space, and the controlled memory space is such that a normal information is read out from the memory space at a first time and a different information is read out at a second time.
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Specification