How we can calculate AES Inverse SBox? I am trying to find out the inverse of and SBox, but in vain, I have seen multiple questions over StackExchange, But I cant be able to solve my issue.
As in this question, How are the AES inverse S-Boxes calculated? As in this link I followed all the procedure and I made a 16x16 Matrix of inverse. But When I multiplied two(Multiplication in GF-2^8) corresponding entries against a SBox value to a inverse SBox value. If this is true in that question then my multiplication would be resulted into 1. But it is not resulting into 1. 
I used X = 0x52. Sbox Generated with C = 0x63 is given Below


 S box Generated
 Inverse Sbox
S-Box's are invertible. The inverse S-box is simply the S-box run in reverse.

One way to calculate the inverse of an S-box is; all you need to use the S-Box itself to find an element's inverse.

For example; look at the Wikipedia example.


00 maps to 63 in the S-box, 63 maps to 00 in the inverse S-Box
54 maps to 43 in the S-box, 42 maps to 64 in the inverse S-Box


This can be executed by passing only once the elements of the S-Box. The complexity will be $\mathcal{O}(n^2)$ where $n$ is the $row=column$ size of the matrix.