Question: (a) In hashing, what is the hash? (b) Is encryption reversible? (c) Is hashing reversible? (d) Is hashing repeatable? (e) When a hashing algorithm is

(a) In hashing, what is the hash?
(b) Is encryption reversible?
(c) Is hashing reversible?
(d) Is hashing repeatable?
(e) When a hashing algorithm is applied, does the hash have a fixed length or a variable length?
(f) What is the hash size of MD5?
(g) What is the hash size of SHA-1?
(h) What is the hash size of SHA-256?
(i) Which hashing algorithms should not be used because they have been found to be vulnerable?

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