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RIGHT INFORMATION ENCRYPTION MODULE, NONVOLATILE MEMORY DEVICE, RIGHT INFORMATION RECORDING SYSTEM, RIGHT INFORMATION DECRYPTION MODULE, RIGHT INFORMATION READING SYSTEM, AND RIGHT INFORMATION RECORDING/READING SYSTEM
RIGHT INFORMATION ENCRYPTION MODULE, NONVOLATILE MEMORY DEVICE, RIGHT INFORMATION RECORDING SYSTEM, RIGHT INFORMATION DECRYPTION MODULE, RIGHT INFORMATION READING SYSTEM, AND RIGHT INFORMATION RECORDING/READING SYSTEM
A right information encryption module 110a comprises a key generation part 111a, a right information encryption part 112a, and a key management information generation part 113a. Key information Km and key management information Mm corresponding to right information are generated and then recorded into a secret recording module 130a. In addition, the right information is encrypted, and then the encrypted right information Enc_a (ROm, Km) and the key management information Mm are recorded into a recording module 140a. This can eliminate the possibility of a capability shortage of a secret area caused by an increase in the data size of the right information including the key information and use restriction information for a content.
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机译：权限信息加密模块 110 a 包括密钥生成部分 111 a ，权限信息加密部分 112 a 和密钥管理信息生成部分 113 a。 生成与权利信息相对应的密钥信息Km和密钥管理信息Mm，然后将其记录到秘密记录模块 130 a中。 此外，权限信息被加密，然后将加密的权限信息Enc_a（ROm，Km）和密钥管理信息Mm记录到记录模块 140 a中。 这可以消除由于包括密钥信息和针对内容的使用限制信息在内的权限信息的数据大小增加而导致秘密区域的能力不足的可能性。
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