Getting hash of a binary file C

Question

I want to get hash of a binary file whose name I have. I have tried the following, but then realized that SHA1() is returning hash value for the string ( name o

Answer 1

I don't know how your SHA1() function works (is it from libssl?), but I assume that by

SHA1((unsigned char *)fileName, strlen(fileName),hash);

you are hashing file name, so /bin/ls string. You need to read file content byte by byte into a buffer and hash it.