| 摘要 |
Device driver 30 has initialization process 31, main process 32, and end process 33. A method for operating device driver 30 comprises a step of encrypting a program code portion of main process 32 of device driver 30, decrypting the program code portion in initialization process 31 of device driver 30, and re-encrypting the program code portion after it is executed and before device driver 30 is released.
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