Secure and Fast Hashing Algorithm With Multiple Security Levels

The authors propose a new Secure and Fast Hashing Algorithm with Multiple Security Levels (SFHA-MSL). It is based on the generic 3C (3 Compressions) construction and the 3C-X (3C XOR) hash function which is the simplest and efficient variant of the generic 3C hash function and it is the simplest modification to the Merkle-Damgard (M-D) iterated construction that one can achieve. The design principle of the proposed algorithm is to have variable output length of 128, 192 and 256 bits, variable number of compression functions, variable number of iterations in each compression function and variable compression function structure.