Cheeky Cryptarithm

Logic Level 1

$\large{\begin{array}{cccccc} & & & A & B & C&D\\ \times & & & & & &D\\ \hline & & & D& C & B&A\\ \end{array}}$

Given that $A,B,C$ and $D$ are distinct single digit non-negative integers satisfying the cryptogram above, find $A+B+C+D$ .