rootkit and trojan hunting

all,
     i am developing a small host integrity scanner / checker, to hunt
rootkits and trojans. offcourse, i need to add more methods /
techniques to detect. I am currently hashing out important files like
kernel, /boot dir and System.map files. Is there any other possible
way to code it better and anyother suggestion would be really helpful
in my coding.

return C;

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