Do bcrypt minor version generates (2b vs 2a) generate different salt?

Question

So depending on the minor version of the bcrypt it will execute different hash computations as described in https://en.wikipedia.org/wiki/Bcrypt

However, do salt gen has any differences between the versions apart from setting the minor and major? Is it just pure random string based on the specific length?

Answer 1

The Salt is just a random string, it should vary every time you generate a password hash regardless of the 2a/2b scheme. Salts should prevent people from build dictionaries of common plaintext and hash combinations.