SHA Cryptographic Algorithms

U završnom radu je opisano općenito što je hash funkcija, kako funkcionira te koja sigurnosna svojstva treba zadovoljavati. U detalje je opisan rad algoritma većine SHA algoritama, preciznije, SHA1 algoritma, SHA-256 i SHA-512 iz obitelji SHA2 algoritama, Keccak algoritam koji je uzet kao standard SHA3 i njegova spužvasta konstrukcija. Na kraju se nalaze razne performansne i sigurnosne usporedbe različitih secure hash algoritama.In the final paper, it is described in general what the hash function is, how it works and which security properties it must satisfy. The algorithm operation of most SHA algorithms is described in detail, more precisely, SHA1 algorithm, SHA-256 and SHA-512 from the family of SHA2 algorithms, the Keccak algorithm which is taken as the SHA3 standard and its sponge construction. At the end, there are various performance and security comparisons of different secure hash algorithms