A random X does not reduce the entropy of bcrypt(B), just fails to add any additional entropy beyond bcrypt(A)'s. Assuming C, where len(C) < 72, I don't know i

A random X does not reduce the entropy of bcrypt(B), just fails to add any additional entropy beyond bcrypt(A)'s. Assuming C, where len(C) < 72, I don't know if it is possible at all to chose some value of Y such that: D:= C+Y Entropy(bcrypt(D))< Entropy(bcrypt(C))