In this paper we investigate the security of the encryption mode of the HAS-160 hash function. HAS-160 is a Korean hash standard which is widely used in Korea’s industry. The structure of HAS-160 is similar to SHA-1 but includes some improvements. The encryption mode of HAS-160 is defined similarly as the encryption mode of SHA-1 that is called SHACAL-1. In 2006, Dunkelman et. al. [10] successf...
