Which are the authentic spice mixtures that are used in the indian cuisine spices?

I am searching for the indian cuisine spices in particular.Which are the authentic spice mixtures that are used in the indian cuisine spices? I am familiar with some of the common Indian spices used there, but can’t seem to get my mixtures spicy enough (as in hot) and right too, when I am trying to use them in my non-veg recipes. What would you like to suggest me about these Indian Cuisine spices? Do share all the spice mixtures available in the market along with an adulterated versions. What i should keep in my mind before buying these?