According to Austrian law (§ 4 FHG), admission to a Master programme is granted on the grounds that an equivalent bachelor programme of at least 3 years duration at an accredited institution in or outside Austria has been completed. Additionally, proof has to be provided that you have fulfilled general university entrance requirements in your country.
For prospective students with international previous education, you can find general informations concerning translation and legalisation here.
Please note that proof of relevant prior knowledge from previous studies must be provided as a prerequisite for admission. Detailed information on the required ECTS can be found on the German website Zugangsvoraussetzungen of the degree programme.