Durofy

The answer is CFZKDQDCJFD. The alphabet is coded as follows :

v,w,x,y,z are the new vowels a,e,i,o,u

ie-a is now v, e is now w, i-x, o-y, & u-z

Then, for the consonants:

a is now z, b is now y, c is now x(alphabetical order reversed):

a-z
b-y
c-x
d-w
e-v
f-t
g-s
h-r
i-q
j-p
k-n
...
...
...
upto
u-b

(leaving out the vowels which are already defined)

v-a
w-e
x-i
y-o
z-u