hello aspirant,

you can call the course as bachelor of legislative law ,

now ,At the postgraduate level, the candidate can do specialization in a chosen subject, which may be:

1. Constitutional Law.

2. Labour Law.

3. Family Law.

4. Intellectual Property Law.

5. Taxation Law.

6. Corporate Law and Governance (including International Business)

7. Criminal Law.

8. Environmental Law.

9. Human Rights.
   
   
   criminal law being your preference, for more information regarding the eligibility and entrance exams, you can refer the following article- https://www.careers360.com/courses/llb-bachelor-of-legislative-law
   
   hope that helps

all the best