# BIKE: Bit Flipping Key Encapsulation - Inverse encryption / decryption

I'm trying to understand white paper about BIKE Asymmetric crypt. And actually read about the inverse matrix that needs to be produced for decryption.

My concern is: Can I actually encrypt data with private key and decrypt with public key instead too?

If so, there are 3 Versions of BIKE: "BIKE-1, BIKE-2, BIKE-3"

Which one will work?

The secret key in BIKE is a sparse parity check matrix of an MDPC code $$(h_0, h_1)$$, and the public key is always dense.