Modify openssl source code

[neha gupta]

I want to make a project based on openssl . I have installed source code of
openssl .9.8.  I want to know that how can i deal with source code and
modify the code according to my need. for example if i want to change the
hash function in master key generation then how can i do this?
Moreover i want to explore my knowledge that how exactly handshake protocol
part is implemented using openssl.