Open SSL without SHA1

Question

Is there any way to use Open SSL without any SHA1 hash functions and using one of SHA2 functions instead of it? I think firstly, I should find all the functions that call SHA1 algorithm, and I should understand why SHA1 is still used. While changing the hash function, the bits are different in SHA1 and SHA2 so it may cause some problems. It confuses me...

Answer 1

There is no cipher suite for the SHA2 family. Look at the man page for a list of all of them.

Answer 2

According to Wikipedia, OpenSSL supports both SHA1 and SHA2 algorithms.

http://en.wikipedia.org/wiki/OpenSSL