| 摘要 |
According to a first aspect of the present invention, a conditional-access program can be updated without replacing a conditional-access large scale integrated circuit (LSI) or a conditional-access terminal device main-body. A conditional-access terminal device reads and decrypts an encrypted conditional-access program from a memory storage device at start-up, and executes conditional-access processing in conformity to the obtained conditional-access program. Consequently, by replacing the memory storage device, the conditional-access program can be updated.
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