Abstract
a good hash function should work like a random oracle or a random sponge. It should not have weakness points in neither the construction nor its cipher. DOUBLE-A (The Security) paper is the complimentary of DOUBLE-A (The Design). It explains the idea of each attack on the cipher and construction of it and how the attacks fit hash function. This paper analyzes the security of the DOUBLE-A hash function and shows the resistance of it against basic security criteria and most known distinguishers.